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www.americanradiohistory.com BRoaDcasT enGineeRina

The journal of the broadcast- communications industry August, 1976 Volume 1it

24 KWWL Revs Up Election Returns. With a modest in- About The Cover vestment, this TV station designed a faster and more efficient method of reporting election returns. Rodney Our theme this month Hughes. upcoming elections. TN

photo was taken at K111 .

TV and the first of threE ' 32 Elections Mean Community Involvement. Large or articles begins on page 4 small staff, it does pay to get various local interest (Photo by Mike Jamiescl groups involved in reporting election returns. Phil Whitney.

36 How To Win On Election Night. Our Radio Workshop editor talks about ideas for reporting and handling elections. Peter Burk. Departments

Direct Current 40 Audio Automation Quality Control. BE audio editor Industry News describes audio quality control tests that are easy to pull and that take up minimum time. Dennis Ciapura. SBE Journal Station -To- Station 45 San Francisco Will Be Radio City. The National Radio People In The News Broadcasters Association will meet in September for Blue Bananas ti their national radio conference. Exhibitors and hospitality suites are included. Zoom In 5' New Products

Ad Index 48 Eliminating The News Blues. Manual and automatic color correction is discussed and at- station application Classified Ads examples are included. Neil Sclater.

EDITORIAL Broadcast Engineering is published and vy Intertec Publishing Corp., 1014 Wyand016u* Ronald N. Merrell, Director. Peggy Brown, Editorial Assistant Kansas City, Missouri 64105 Carl Babcoke, Telephone 1913) 868.4664 Technical H. G. Roesler, Cartoonist Pat Finnegan, Maintenance Rose, Broadcast Engineering is mailed free 100i441 Dudley Graphic Designer SPI Howard T. Head, FCC Rules persons engaged in commercial and Joe Roizen, Video radio and television broadcasting. NOMa' Robert A. Jones, Facilities Peter Burk, Radio Workshop subscriptions in the U S are $6.00 0 a Walter Jung, Solid State Dennis Ciapura, Audio Editor s10 00 two years, 613 00 three years. USA add 61 00 per year to cover pONq 6t copy rate 75 cents. Back issues fir CIRCULATION ADVERTISING Adjustments necessitated by suC11e40° Evelyn Rogers, Manager Mike Kreiter, Director minahon at single copy rate. Gloria Parmenter, Production Controlled Circulation postage paid at" Regional Advertising Sales Offices on pops, Indhana Advertisers' Index page Robert E. POOP. A` + Copyright, 1976, Intertec Publishing Corp All Rights Reserved Material may not be INTERTEC PUBLISH " ' reproduced or photocopied in any form i W without written permission of Publisher Subsidiary of HOWARD W SAMS 6I

2 www.americanradiohistory.com INTRODUCING .. . Model 1600-7K Switching System With Rotational Wipe Transitions

Model 1600-7K is a 24- input, 8- output, levers allows independent control of size and production switcher with 3 mix /effects rotation. Soft wipe and bordered wipe opera- systems, plus program and preset buses with tion is available with most rotary patterns. flip -flop mixing. Each mix/ effects system Selection of a pivotal wipe is obtained by provides both rotary and wipe conventional depressing a unique pattern button. Selection effects. of the rotational mode (R) or splitting mode Several types of rotational transitions are (S) for conventional patterns is achieved by possible, for example wipes which pivot about first selecting the conventional pattern (e.g., a square), followed by operation of a a fixed point to produce a clock, windshield "shift" wiper, or fan effect. The rotational feature key. A total of 54 patterns is available. can also be applied to many conventional Model 1600 -7K is also available in PAL and patterns to produce either a rotational effect PAL -M versions. For additional information or a splitting effect. A square or a group of 4 on the system, including a demonstration squares can be made to rotate as they expand video tape, contact your nearest Grass Valley in size. Separation of the transition control Group field office.

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For More Details Circle (11) on Reply Card rr www.americanradiohistory.com DIRECT A,.:.,_o ilifd1if CURRENT = FROM D. C.

August, 1976/By Howard T. Head and Harold L. Kassens

Radio "Freeze" Deluges Commission with Applications

A veritable avalanche of applications for new AM and FM radio stations and major improvements in existing stations was filed by the Commission's June 30 deadline establishing a "closed season" on the acceptance of such applications. During the month of Juns.,L the Commission received 85 applications for new AM stations (plusl.II 171 applications for major changes in existing stations); 109 newt commercial FM stations (92 major changes); and 76 new educationalsM FM stations (32 major changes). With these applications added to similar applications already on file, the Commission now finds itself with a total of 1,287 appli cations either for new radio stations or for major changes in existing stations. If the Commission continues to dispose of

these applications at the same rate as the past several months, t. last application will have been disposed of shortly after 9:30 a. Monday, February 26, 1979. The Commission is acutely aware of the problem of processing the: applications, and is reorganizing its processing staff. Proposa] under consideration include expanding the processing staff, simplifying processing procedures, or contracting the job of process to organizations outside of government. CATV Eyes Smaller Satellite Receive Dishes

The cable television industry is urging the Commission to permit cable systems to employ satellite receiving antenna dishes smalle than 10 meters in diameter in order to reduce the complexity and cost of terminals to be used with satellite distribution systems. The present envelope requirements can be met at the commonly -useC down frequencies in the 4 GHz band only by employing diameters or the order of 10 meters. This dimension is established for severe reasons, including the need for a narrow antenna beam to avoid overlapping into adjacent orbital slots, minimization of side lobes, improved signal -to -noise ratios, and reduction of foregrouu noise pickup.

Cable industry spokesmen have reported performance satisfactory from the cable system's standpoint using antenna diameters as small as three meters, and an economical transportable earth terminal with an antenna aperture of approximately this size was demonstrated to Congressional staffers in Washington last month. (Continued on p

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Congestion is already heavy in the 4 GHz band, which must be shared with terrestrial common carriers. The Commerce Depart- ment's Office of Telecommunications (OT) has urged increased experimentation in the 11 to 14 GHz and 18 to 30 GHz bands as the ultimate home for this type of service.

Commission Acts on UHF Improvement Proposal

The Commission has proposed to amend its rules governing UHF television receivers to require that any television receiver which is shipped with a permanently affixed VHF receiving antenna also have permanently affixed an effective UHF receiving antenna' Alternatively, the receiver could be shipped with neither anten permanently connected.

The proposal was issued in response to a petition by a coalition of TV broadcast organizations led by the Council for UHF Broad- casting (CUB). Still awaiting Commission action is a companion proposal filed by CUB asking the Commission to reduce the per- missible noise figure for UHF receivers below the presently permitted 18 dB above kTAf (See Sept., 1975 D.C.)

Both of these steps urged by CUB are part of an extensive "Action Plan" aimed at improving the quality of UHF reception by various(. actions by both governmental and industrial entities. Emphasis is placed on improved reception, improved transmission and an educational program aimed at both the general public and television technicians.

SHORT CIRCUITS

The Commission has contracted with the Office of Telecommunica- a tions (OT) to study the feasibility of VHF television drop -ins 2 at Knoxville, Tennessee and Evansville, Indiana...The Commission i has amended the AM rules to make clear that static drains and lighting chokes are permitted in shunt across the tower beyond f. the antenna ammeter; but be sure there are no shunt tuning components beyond the ammeter...The UHF translator rules have been e amended to permit multiple output amplifiers from a single trans - 6 lator to serve different communities...A master antenna television system operator in the West has been ordered to cease and L desist from the operation of a system which was generating and I> radiating the second harmonic of an FM signal in the frequency limits of Channel 7...The Commission received "no acceptable bids" for its television "receiver of tomorrow" (See June, 1976 V D.C.)...Class D Citizens Band interference in the 27 MHz band is giving fits to both the Commission and viewers attempting to watch TV Channels 2 and 5; meanshile the Commission is pressing forward with plans to expand the citizens band from 23 to 40 or more channels, some of whose harmonics would also fall within TV Channel 6...The Commission has informed licensees that the uIE of "tone clusters" as an attention -getting device is an acceptab)= practice so long as the frequencies of the EBS tones are avoided`-'

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ON SEPTEMBER 11,1975, THIS WAS THE SECOND HALF OF "TIE HOLLYWOOD SQUARES: On September 11, 1975, WTVF scooped all the Nashville news media with live, on -the- scene coverage of a riot in progress at Tennessee State Prison. They did it using some of the most advanced Electronic News Gathering (ENG) equipment available today. Equipment which included, not surprisingly, an ENG microwave system from the Communications Equipment Division of Microwave Associates. We at MA's Communications Equipment Division pioneered in microwave systems for ENG applications and are now the only company making a complete line of equipment. Everything from miniature battery operated transmitters to portable van models to fixed location transmitter/receivers. And we not only make them, we also do site surveys, installation, training, and servicing - nationwide. Small wonder we're now number one in microwave for ENG. Microwave Associates, Communication Equipment Division, Burlington, MA 01803. 617 -272 -3000. MICROWAVE ASSOCIATES

For More Details Circle (13) on Reply Card 7 www.americanradiohistory.com a D v 1Ú1d NEWS

Commission Holds L On Phone Programs

The Commission has denied the reque

Quatro Productions requesting a waiver of tF £.r vance notice requirements pertaining to the hat cast of recorded telephone conversations. (Section 73.1206 of the rules provides that it Finally, a lightweight recording a telephone conversation for broader licensee shall inform the party to the call r (under 7 oz.) intention to broadcast the conversation.) Quatro is an independent television pro Portable SMPTE producer. It submitted a program format for .n television program to a national television ne Time Code Generator which would involve celebrities making tele is engaged in i. Our new miniature SMPTE Time Code Generator calls in which the party called slips right into your portable VO 3800 VTR - and you versation. don't have to go back to the studio for costly and The viewer of the program would see and time- consuming after -the-fact source identification the celebrity making the call and would he: - processing. conversation between the celebrity and the J Total weight - less than 7 oz. 9 volt D.C. battery called. The party called would not be giver operated. Full LED display. (Resetable.) notice before or during the conversation the r Peripheral equipment gives you finesse of call is being taped for broadcast. Whett SMPTE - even on a tight budget. conversation is terminated, however, a noti These units make excellent companions for an be given that the conversation was part of a Datatron you existing Control Track system want to vision program. if production personnel det convert to SMPTE Time Code technology - or you l that the party called does not recognize that. can upgrade a basic SMPTE editing unit. They are to broadca dil all fully compatible with your current equipment the party is so advised, his consent is refuse 'Iv and, also, with our new dual system Tempo 76. call would be sought and if consent he Units are 1-3,4" high and fit standard 19" racks. tape would be erased and the party called wort Check reader services card number listed provided with an affidavit to that effect. below to receive details on: Quatro said the spontaneity, which is the e:: New Portable SMPTE Time Code Generator of the program. would be lost if advance not. v7 (510 P) for use with portable VTRs. Mounts in the ongoing recording is required. VO 3800. The Commission noted that since Quatro is ne h, Code Generator (Model 5150) - Can be locked licensee. Section 73.1206 imposes no obligati' 'M to station sync. Buffered parallel BCD time and it. It said Quatro requested the waiver slot lit status outputs. network and other broadcast licensees likely ),IN Code Reader (Model 5250) Reads code - not risk a violation of the rule by broadcastir I48I forward and reverse at speeds up to 60 times normal with no frame proposed program without it. delay. Buffered parallel at4'la BCD time and status outputs. Automatic drop frame The Commission noted that even though code direction would be erased and not broadcast if the vs f Character Generator (Model 5450)11 charac- called refused permission, the telephone con1A4' adu ters. Grey -to -black mask density. Adjustable charac- tion would already have been heard by the ter position and size. Compatible with 5150 or 5250. audience before whom the program was taped Digital Dissolver (Model 5800) - Easy-to- The Commission added that its actions ta! .114 program dissolves from 1 to 999 frames. Remote consistently stated that the production of control available programming by licensees must be subordinati if the public interest in protecting individuals x'9 invasion of privacy and preserving their fre.14 from harrassment or embarassment. datation, inc. reflected i At It noted that this same policy is EDITING SYSTEMS DIVISION common carrier tariffs which permit the V 4 1562 Reynolds Avenue Irvine, California 92714 for recording telephone conversationsw4 (714) 540 -9330 TWX 910 -595 -1589 Cable RELIABLE devices when an automatic tone-warning (beep -ton tfi communicating parties accompanies the recorr'tir For More Details Circle (14) on Reply Card 8 BROADCAST ENGINE!' '

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www.americanradiohistory.com Industry News

Increase sharpness... Radio News Awan w Houston Station improve camera Huston's KEYH has recela, major award in the 1976 Associated Press Broadc sensitivity Radio News Competition f investigative story. The awa KEYH's investigation and re of events that led to the sus For the sharpest image, the finest of Houston Police Captain resolution, the best picture quality in your L. Nixon in November, 1975. station's ADI, EEV's new 30mm Coaxial KEYH's award was in the Leddicon" Camera Tube is the answer. Associated Press Broadca Features the fastest leading edge largest metropolitan categor signal level rise and quickest trailing cities with more than 300,0) it edge fall of any image tube now on population. Presentation o 1ií the market. Patented coaxial design award was made recently t t assures consistently accurate organization's award lunche. t geometry and optimum registration the Fort Brown Hotel, Brownie no matter the tube orientation. Texas. RESULT ... a noticeably superior picture quality even under the Ease lb most difficult lighting conditions. Commission Direct replacement for On DA Designs a most separate or integral mesh The Commission has amend NI Plumbicong', Vistacon or older certain aspes 1101 Leddicon camera tubes. rules governing Available with exclusive the design of directional anti internal fixed or variable for AM stations to alloy t light bias in extended red, antenna designer increased I extended green, luminance, in developing a radiation pt blue, green, red or meeting FCC allocation regl monochrome types. Call ments. Many AM stations. inrrl or write today to provide protection to t for details. stations or to provide cov'er:e particular areas. employ dire(. antenna systems. The perfora of directional antenna systes predicted by mathematical tions. In these calculation: FCC's rules provide for mathematical assumptions. On December 12. 1975. mission initiated this ru proceeding to consider some of these assumptions.

Leddicon is $ registered on a request by the Assoc' trademark of English Electric Cis Velum Company Ltd. Federal Communications (AFCCE). Out Plumbicon Is a registered ing Engineers trademark of N. V. Philips' modified rules, two basic cl of Holland in the mathematical assn were adopted: -the assumption concerni; loss resistance in the art EEV NORTH AMERICA system (a method of deter.' ENGLISH ELECTRIC VALVE NORTH AMERICA LTD. the efficiency of the antenn ten) was relaxed; 1 American Drive Cheektowaga, NY 14225 -the mathematical corn=,$ (716) 632 -5871 TWX: (710) 523 -1862 Lion in systems using tall Iv' r a, 67 Westmore Drive Rexdale, Ontario M9V 3Y6 (over one -half wavelength) prep (416) 745 -9494 Telex: 06 965864 creased for calculations little or no radiation when i A member of the GEC.English Electric Group of Companies there will be radiation.

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Ist, For on Reply Card 1976 More Details Circle (17)

www.americanradiohistory.com Industry News quirenlent for both routine and service operai

are current examinations producing tech . qualified service operators; FCC Asks For Comments are the examinations outdated and comp,. to the extent that licenses can be obtain On Operator Licensing technically incompetent persons; does the scope of the examinations ace The Commission has initiated an inquiry to solicit reflect the knowledge required in light comments and recommendations on the relevancy of current technical state of the communie .rrl its radio operator rules to the current state of the industry; communications industry. should a period of "apprenticeship" ur Under Section 318 of the Communications Act of "hegineer" class of license be required prior 14, 1934. the actual operation of all transmitting issuance of a regular license to assure some NH apparatus for which a station license is required of practical experience; must be performed only by a person holding an in view of the wide variety of radio still' operator license. licensed by the FCC and unique requiremtts r However. except for ship, aircraft, broadcast and some of these stations. would it be desirable tick sonic common carrier stations. the FCC may waive :L basic operator /technician class of license w1 el, or modify the provisions of Section 318. and to a tional specialized endorsement such as AN IS large extent, has done so. For example. operator TV. Land Mobile. Radar and Microwave; licenses are no longer required for the routine if so. what provisions should be made for Irsr. operations of stations such as Police. Fire, Business. now holding a Radiotelephone First or Second/. Taxi and Citizens Band Radio. Only station licenses License. are required. The Commission also asked for commes The Commission asked for comments and sugges- whether operator licenses should be issued r u tions concerning the desirability of retaining or lifetime of the holder, rather than for the lie waiving the regeirement for licensed operators for live year term; or should operators be requ:i routine operations of broadcast transmitters. take a renewal examination. The FCC asked for comments on the following. Comments are due by September 1 and :pli should it appear desirable to retain the licensing re- September 15.

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Card 1976 For More Details Circle 09) on Reply 13

www.americanradiohistory.com 4 Industry News A new subsection (b) als added prohibiting supplying any document to FCC Hits Fraudulent Billing gram supplier providing spi information concerning the 4, the Commission has amended its document containing false informa- cast of the program or pr rte rule prohibiting fraudulent (double) tion concerning the amount actually matter supplied. including nc billing practices by broadcast lic- charged for broadcast advertising, mercial matter. that contain to ensees. Under the amended rule or which misrepresents the quantity information. The Commissio IScetion 73.1205). no licensee of a of advertising actually broadcast. emphasized that it was a lie standard. FM, or television broad- substantially or materially misrepre- responsibility to see that its cast station shall "knowingly issue sents the time of day it was broad- and employees do not issue or knowingly cause to be issued" cast. or misrepresents the date on ments containing false inform,

in bill. invoice, affidavit or other %% Inch it was broadcast. On May 29, 1975. thet

initiated a rulemaking proc . proposing amending the frail billing rule. noting that altht- had cautioned licensees for against this practice. it ha, tinned and complaints hac cated it might be increasin _ Commission said that wl adopted the fraudulent billit NNs in 1965. its concern was the 'r- pation by a licensee in Prat. activity. The amendments I MGEoGo effective July 15.

l'he Commission said its u. . G Aá av in this proceeding was the . The FCC said that a frail SERIES 3000 statement raises the sane .. Auto release deck - massive, quiet tìuns. regardless of wheth operating air damped solenoid. subject of the statement is et Low power consumption - less cial matter or other prograr than 45 watts. ter. It said it also could see r PHASE -LOK Ill head bracket - son to treat fraudulent statae minimizes stereo phasing problems. issued to program syndicate t Full range of mono and stereo from those issued o models for A, B and C size carts. differently works. It said the amended ilr SERIES 4000 would make uniform the alt All the same solid features as the bility of the rule to conduct trri SERIES 3000 with added standard in substantial part by exist*: features - microphone inputs, quirements. dummy head in record position (on playback models) and many others. In emphasizing the lick New styling for the discriminating broadcaster. responsibility. the Comtnissil Additional optional features include internal fault /splice detector. it proposed to find violatiotif SERIES 5000 rule where employees issu Modular design with fold down front panel ments containing false infor and slide out direct drive decks. and where the licensee knd! Auto release decks - massive, quiet fact. or would have known/ operating air damped solenoids. given periodic. diligent and ' PHASE -LOK Ill head brackets - minimize able supervision to this arexrt problems. stereo phasing operations. Separate electronics for each deck on 2 PC cards. However. it would not rid violation. the Commission ed OVER 40 CART MACHINE MODELS. ALSO AUDIO CONSOLES, cases where the licensee AUDIO PROCESSORS, AND STUDIO ACCESSORIES. knowledge and where th information appears to hat BROADCAST ELECTRONICS INC. issued as the result of an oet- - A FILMWAYS COMPANY - IOM mistake not indicating a pat' 8810 BROOKVILLE ROAD, SILVER SPRING, MD. 20910 MIIM where reasonable diligence' PHONE: 301 -588 4983 TWX: 710825 -0432 not uncover the issuance of t CABLE: "SPOTMASTER" formation. such as careful cealed wrongdoing.

For More Details Circle (20) on Reply Card 14 BROADCAST ENGIN'

www.americanradiohistory.com a what a lot of people who use in or out of the studio. ability. There's simply nothing else .kiera systems are telling us. They like the dependability, the feeling comparable at the price. leDecifically, they're saying that of confidence they have when they So they get hooked on CEI. - the really extraordinary long know they can rely on their cameras. Take a look for yourself. You may end ybility of the color, hour after They like the system compatibility, the up getting hooked, too, but we promise d day long, without touching fact that all CEI 200 Series cameras you'll love every minute of it. trots. I c operate from common control units. Call your CEI representative. Or write iby e the fact that every system With great color matching. us at 880 Maude Avenue, Mountain *I : is light and easy to handle, And best of all, they like the afford- View, California 94040.

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For More Details Circle (21) on Reply Card

www.americanradiohistory.com design, plant layout, or projects Chapter 3: Kansas State directly related to broadcast en- Bob Fulkerson (KPTS -TV) gineering for a period of ten years duced Curt Lutz, Regional shall qualify for Certification as a Engineer for Harris to the C _ _ Senior Broadcast Engineer." at its May 11th meeting. Lut The words responsibility and two presentations: 1) a tal SOCIETY OF BROADCAST ENGINEERS, INC. P 0 Box 88123 Indianapolis. Indiana 46208 broadcast engineering are the key slides on micro -computers u: words to remember -the candidate application in automation 2) a talk and slides on the the first solid state 1kw AM `Responsibility' Is Key mitter. (Bill Keegan, Chai KTSB, P.O. Box 2700, To SBE Certification Kansas 66601, (913) 582 -4 The New York Chapter The Certification Secretary feels must have worked in a responsible June 10th at the WQXR Pm

that it is necessary to inform all position in broadcast engineering. tion Theater to hear lam lI candidates for Certification to in- Since these two phrases can be Stephenson of Ampex CorpouR clude as much detailed information interpreted in many ways it is to give a talk and demonstratntar as possible concerning their job the candidates advantage to give the new Ampex ATR -100 ef- responsibilities when they are com- the Committee as much detail as is tape recorders. He also gave pe; pleting their Certification applica- possible. sentation on the state of the it tions. The Certification Committee To receive the complete Certifica- tape recording and therewn wants to grandfather as many tion packet drop a letter to: Ampex personnel at the meene people as possible but they are CERTIFICATION SECRETARY answer questions from the motor bound by certain guidelines. The P.O. Box 88123 and guests. (Larry Strasser, he guideline that is most important is: Indianapolis, IN 46208 man, WTFM Radio, Long FI "A candidate who had demon- Or call (317) 842 -0836 for a Expressway, Fresh Meadows strated professional responsibility in packet or if you have any questions York 11365, (212) 357 -8000),, the area of supervision. equipment concerning the program. Continued on il

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Reply' For More Details Circle (22) on Reply Card For More Details Circle (23) on 16 BROADCAST ENGINE

www.americanradiohistory.com ECADE

m the company whose innovations over the past utmost flexibility and economy for ENG, local remote

'J y rs revolutionized color television cameras in the and studio production... without compromise. And !S :id throughout the world, now puts its 3- Plumbi- the LDK -11 is available now! sn ature and a beam -splitter prism into the most Send for more information. Or, better still, have market. cci11 new lightweight camera value on the your Philips representative set up a demo for you. But do it today before you get TKO'd into anything hef lLIPS 1.13K-11. Full broadcast quality else. Broadcast Products, Philips Audio Video Systems n F1h ENG and commercial production! Corp., 91 McKee Drive, Mahwah, New Jersey 07430. e LDK-11 no longer must broadcasters or pro- (201) 529 -3800. , companies sacrifice picture quality or opera- - features for portability. Broadcasters started PHILIPS® ,in! he LDK -11 in January, 1976 and the reactions een outstanding. A typical report from one of stations to get delivery... "the field pictures look E tey were shot in our studio!" 1B&ery or AC powered and with full production W. either remotely or at the backpack, the LDK -11 the key Philips engineering features that make o other comparable camera in the world. These s include Philips famed 3- Plumbicon tube pic- am -split prism with bias light and Philips natrix for superb colorimetry. is° cluded are H & V contours, '44? >, auto white ba!ance, gen- K nc generator switchable 11 -id gamma, built -in color I's.'mote VTR and zoom con - s. id two audio channels. Al lis and more add up to the

'TM N V PHILIPS

For Demonstration Only Circle (75) an Reply Card 17 61976 For More Details Circle (76) on Reply Card

www.americanradiohistory.com SBE Journal Continued from page 16

Transm itIrs Chapter 17: Minneapolis, r. The chapter held its meet May 22nd at KVBR Ra(, Love Our Brainerd, Minnesota. Mark P. ,r: Director of Engineering w; host. The meeting consis tours of KVBR studios, ti iVlodulimiter. Translator Site and the 1i KVBR -FM site. There was talk /demonstration of variousaf,c of telephone equipment for, a. remotes and talk shows. prv( The Competition Raygor, Chairman, Rt. 1, Bç" Chisago City, Minnesota. Will Hate Your (612) 373 -4807). Chapter 26: Chicago, Illinls The chapter met at He tr Packard on June 22nd to heE pi New Sound. Montoya, Hewlett- Packarc.N Products Engineer, talk :a "State of the Art Digital 7_r,r The BL -40 Modulimiter is a unique automatic AM broadcast ques" with emphasis on turf limiter, which will maximize modern transmitter performance. shooting in the data dc Whatever your format -hard rock to classical, Modulimiter will (Robert Churchill, Chairman 5rti increase transmitter efficiency and extend coverage. 121 West Wacker Drive, Roo 9 The BL -40's patented electro- optical attenuator provides smooth, Chicago, Illinois 60601, (31: unobtrusive, true RMS limiting. An ultra fast F.E.T. peak limiting 5215). section assures absolute protection from unwanted over modulation without peak clipping. Attack time is essentially instantaneous. Chapter 33: Southwestern)tw Three separate meters indicate RMS LIMITING, PEAK LIMITING The May meeting of Chain t') AND OUTPUT LEVEL, simultaneously. All critical adjustments was held on May 20th i, tf7 are behind a front security panel. A "phase optimizer" maintains studios of WXIX -TV. The pnrid' most favorable signal polarity permitting up to 125% positive a discussion and slide preseiret modulation without negative undershoot. " Its the limit " in of circularly polarized ani todays broadcast limiters. UREI quality of course was given by Bob Winn frc 11, Available from your UREI dealer. RCA Antenna Engineering Ipai ment. A question and .s,rte session followed. The June meeting of Chapr ` was held on June 17th a t WCPO -TV studios. The puNtb was a discussion and demons3rat;, of the W CPO -TV instant ca i : r associated microwave link. W111" increased emphasis on new a especially ENG gear, this pr( ",t be a very interesting meetin r Williams, Chairman, 2092 n wood Place, Cincinnati, Ohio (513) 851 -4964).

Chapter 34: Albuquerque, l." On June 10th Robert !' "i from the Los Angeles bra>h a 4k Harris gave a slide presentate the application of pulse MI 11922 Valerio Street a+ modulation as used in the ne No. Hollywood, California 91605 (213) 764 -1500 ta transmitter at KOB and th Exclusive export agent: New York Gotham Export Corporation, one ready for installation at 111 Continued on b

For More Details Circle (5) on Reply Card 18 BROADCAST ENGINE'

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CENTRAL DYNAMICS LTD 697 -0811 Canada: 147 Hymus Blvd . Montreal, Oue . H9R -1G1 514- U.S.A. 230 Livingston Street. Northvale. N J 07647 201 -767 -1 300 Chicago: 312-991 -4720 Loa Angeles: 213- 789 -0574 For More Details Circle (6) on Replt Cud www.americanradiohistory.com SBE Journal Continued from page 18 loudness not attainable by conven- been seen by many of the tional plate modulation. (Michael members at leading b Pulse duration modulation avoids Langner, Chairman, Gaylord shows but it was an oppo the use of any inductive reactance, Broadcasting, P.O. Box 737, those members who had e.g. modulation transformer, so Albuquerque, New Mexico. (505) able to attend to bec

that no ringing occurs permitting 765 -5600). quainted with RCA's 1 the passage of highly processed portable camera equipment (clipped) audio waveforms without Chapter 36: San Diego, Calif. attention Bill Montgom the attendant increase in peak On May 26th the chapter met at Convoy Court, San Di amplitude produced by inductor KPBS -TV to hear Chris Cookson of fornia 92111). energy storage and release. In a RCA talk about the RCA TK76 nutshell, this type of transmitter Hand -Held Field and Studio Pro- Chapter 37: Washingt permits a modulation density, or duction Camera. The camera had Northern V The chapter held its M ing on May 26th at tronics in Springfield, V Delta demonstrated a n products including their current measuring system, AUDI CORD CORPORATION tour of the Delta factory. Charlie Wright, presented i interesting evening.

The June meeting was I

new manufac- meeting with SMPTE on lull Dear Broadcaster, of our iss nVd] -cord in construction thatr s delays to announce At the meeting there was a is tin- tut pleased 100 series After I am -Cart rte de- facility. the Modu car turing of to B Convention as- stration of the RCA TK74 production the 1976 improving ti in limited at [eating, mater - introduced assurance equipment in s smooth camera. (Charles F. Riley, :11 well spent; for lays were an d technaques man, Tele -Color Productior sembly equipment o production. cartridge the ,broadcasters cal improvements 708 N. West St., Alexid has built ,1eeded technical (ea- o operator Audi-Cord 100 series. number to unusual of listening Virginia 22314, (703) 683.3241 includehe yearsn made and use of many the equipment were the maintainsains These are uw at and and me hope cures. oua sill who have done. good ser- the what we 9 will like continuing Chapter 41: Central Peni Dy providing your business tha cyvea earn On May 27th the chapter* to the industry. 100 series vice our Kochi-Cart please of L the highlightshí9 model variations. for the WHP studios to heat review in 12 trial unit Please available for a They are your order of course. oror place Roberts of Harris Corp. write us, is guaranteed, call or satisfaction early delivery. technical slide presentation history and development c FÏ Sincerely. Duration Modulation for Abl? 64/71144) mittens. (Nelson Maus, Chlra, Carl L. Martin President 221 Enola Road, Enola, PAT();

I26e/ 452,9461 6.M. NORMAL. ILL AVE ems er HOVEY 61.1 Nix On New Cis PO BOA The National Associa Broadcasters has asked the Communications Commis - r deny a request to establisl i SEg. munity Access Noncomme tions, a new class of radio The new class, propos Model 115 RerorderReproducer Model 100 Reproducer Tobi Kanter of Denver Internal frequency response Plug -in interchangeable would operate at 250 watts test system. transports. and 100 watts nighttime. I Multi- purpose metering -auto Front access controls -dual switched. equalization offer locally produced p Front access controls -dual Selectable replay reminder a equalization. system. fairs, musical. dramatic Optional precision digital Unique pressure regulated tape tural programming. record timer. drive. In its filing, NAB noted year it objected to a pro, AUDI -CORD CORPORATION frequencies 530, 1606 and establish a local governmel 1845 W Hovey Ave., P.O. Box 611 Normal, Ill. 61761 service designed to transmit 1309) 452-9461 kinds of information to tl4r ing public. Foi More Details CucIP (7) on Reply Card

20 BROADCAST E

www.americanradiohistory.com Ai don't think this is the BEST LOOKING PACKAGE ROUND,.: P

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VIDEO SUBCARRIER PULSE PULSE DELAY BURST GEN.

BC4NCED DIFF. UNBALANCED UNBALANCED UNBALANCED UNBALANCED BIANCED IMPEDANCE: One, 50K IMPEDANCE: One, 50K IMPEDANCE: One, 50K SYNC: One, 20K (loop), 'E NCE: One, 20K (loop) (loop) - (loop) 2-4 VPP LEVEL: 1 -4 VPP LEVEL: 1 -5 VPP RETURN LOSS: 40 dB BLANKING: One, 20K (loop), 2-4 VPP TLN LOSS: 40 dB RETURN LOSS: 40 dB LEVEL: 1 -5 VPP /F 1-2 VPP SUBCARRIER: One, 50K (loop), 1 -3 VPP H dB at 60 Hz E NCE: Six, 75 ohm IMPEDANCE: Six, 75 ohm IMPEDANCE: Six, 75 ohm IMPEDANCE: Six, 75 ohm IMPEDANCE: Two,75 ohm _1 (two groups of three ±1% (three groups of ±-1% (two groups of SYNC AMPLITUDE: 0 to two three each) TLiI LOSS: 40 dB outputs each) outputs each) outputs 0.5 VPP 1 -3 VPP 2 -4 VPP VPP IF 1-2 VPP LEVEL: (each LEVEL: (each LEVEL: 2-4 (each PEDESTAL: 0 to 0.1 VPP group of three group of two adj.) group of three ad) .) UP BG: DC outputs adj.) BURST AMPLITUDE: 0.2 COUPLING: DC COUPLING: DC to 0.5 VPP .11 ON: 40 dB to REGENERATIVE `.dHz ISOLATION: 40 dB ISOLATION: 40 dB REGENERATIVE REGENERATIVE

IN ;dB DISTORTION: 1% RISE TIME: 100 ±20 ns RISE TIME: 100±20 ns RISE TIME: 100 ±20 ns

ïPiSE: ±0 1 dB to PHASE RANGE: 0 to 360° OVERSHOOT: 1% TILT: 1% BURST PHASE: 0 to 360° 10 -1z; a0.1 -2 dB dB, (each group of three TILT: 0.5 %, 50 Hz HUM & NOISE: -60 dB TILT: 1% to MHz outputs adj.) HUM & NOISE: -60 dB PULSE WIDTH: Equal at PHASE STABILITY: ±10 'F.41N: 0.2% HUM & NOISE: -60 dB WIDTH ±20 ns 50% point GAIN ±1% F.IASE: 0.10 STABILITY: STABILITY: PHASE STABILITY: ±10 DELAY: 0.35 to 4 us T:2%,50Hz PULSE WIDTH: Equal at GAIN STABILITY: ±1% 50% point (each group of three dA:: 2% Outputs adj.) LEVEL STABILITY: 1% M 1% NOISE: 1 mVPP DELAY STABILITY: DELAY: 120 ns (approx.) SB 'TY: 1%

wing DYNAIR broadcast equipment dealers will welcome your inquiry concerning price for your specific FiS 5900 Distribution Amplifier package:

Electronics General Electronic Systems Midwest Telecommunications Peirce -Phelps, Inc. Thalner Electronic ui' St. 1440 San Pablo Ave. 300 First Ave., S. 2000 Block N. 59th St. Laboratories, Inc. 1) 64108 Berkeley, CA. 94702 P. O. Box 385 Philadelphia, PA. 19131 7235 Jackson Rd. 1415) 527.7700 Nitro, W.V. 25143 (215) 879-7171 Ann Arbor, Ml. 48103 1304) 722-2921 (313) 761-4506 K & M Electronics of Ronco Communications & Todd Communications, Inc. Midwest Telecommunications Electronics, Inc. Tri- Tronics, Inc. 7360 Ohms Lane 1395 Air Rail Ave. 595 Sheridan Or. 4019 Tujunga Ave. VA 98040 Minneapolis, MN. 55435 Virginia Beach, VA. 23455 Tonawanda, N.V. 14150 N. Hollywood, CA. 91604 1612) 835-3080 1804) 464-6256 1716) 873-0760 1213) 877.9912 Visual, Inc. Lebow Labs, Inc. Midwest Telecommunications Tele -Measurements, Inc. Vidcom, Inc. Division 424 Cambridge St. 3331 N.W. 82nd Ave. 145 Main Ave. 1908 E. McDowell Rd.

i vil Boston, MA. 02134 Miami, FL. 33126 Clifton, N.J. 07014 Phoenix. AZ. 85006 1704 (617) 782-0600 (305) 592.5355 (201) 473.8822 (in N.J.) (602) 253 -2103 :13 12121 581-9020 (in N.Y.) Long Engineering Midwest Telecommunications r il ducts Corp. 961 Burke St. 3000 Carlisle St. Rd. Winston -Salem, N.C. 27101 Dallas, TX. 75204 DYNAIR ELECTRONICS, INC. 44110 (919) 725.2306 1214)741.1440 6360 FEDERAL BLVD ,SAN DIEGO, CA. 92114 PHONE: (714) 5829211; TWX: (910) 335-2040

www.americanradiohistory.com www.americanradiohistory.com The Sony BVH-I000. Consider the concept.

The BVH -1000 brings a new, two -in -one 4. Standard VH and color framing t to professional high band video recording. modes. Both are standard equipment in the rs current broadcasting needs for a top- of-the- BVH -1000. Two high quality audio tracks and a recorder, and does it in an economical package separate cue track, plus 400Hz tone generator are ut compromising video or audio quality. also standard. But more than that, the BVH -1000 is the 5. Biderex search control. Built -in the of the future. Designed for production hi- directional search control allows shuttling of d post- production applications, it is a 1" video the video tape in either direction from 1/3 frame er that can compete with 35mm film jog to high speed rewind and fast forward. The tques. non -segmented formats allow the operator to see It wasn't easy, but we have combined the picture and make fast editing decisions either arent picture quality, plus two professional manually or with computer control. ity audio tracks with advanced editing 6. Standard tape timer. This features a iques. That combination simply is not special memory that prevents the tape from lable in any other recorder, no matter what unthreading. SMPTE reader/generator is a format or tape width. plug -in option. Before considering another recorder, 7. Versatile mounting. A flexible amine these eight BVH -1000 features: mounting system and built -in wave toms select 1. Exclusive 1.5 head. This completely enable the BVH -1000 to be adapted to any number )ids the problem of missing information caused of mounting or console configurations. head switching of single head machines. It also The BVH -1000 is at home in a small van or big ores, for the quality user, a continuity of video studio. 8. New Drmation, as well as VIRS record /playback, Sony lime base corrector. be used with Sony's ich may be required of all machines in the future. The BVH -1000 can new or any other 2. Advanced servo design. BVT -1000 time hase conector quality TBC. If you don't require time hase e BVH -1000 incorporates drum servo, capstan correction, an optional heterodyne recovery ro, tension servo, reel servo. This servo board is available. em, combined with dual capstan drive, ides highly accurate tape speed and quality This is just the beginning of the BVH -1000 !change, plus gentle tape handling in fast concept. To learn more about the economy, d and revetse modes. technical performance and specifications, contact 3. Five motors. These eliminate the use of your Sony Broadcast representative, or write ble and inaccurate belt systems for drives. Sony Broadcast.

Sony Broadcast Sony Corporation of America, 9 West 57 Street, New York, New York 10019

For Demonstration Only Circle (67) on Reply Card

For More Details Circle (68) on Reply Card 23

www.americanradiohistory.com KINIAIL Revs Up

The Bicentennial spirit arse Election Returns an unusual atmosphere fc- American Way" of coverisid tion returns this year. KWWL -TV, in the pa! By Rodney Hughes several manually operated 61 boards to create a different presentation for these spec exciting news events. Short; the 1974 elections, Tim or K W W L -TV Vice Preside l gram Director, convinced I a. ment of the need to incn A speed and accuracy of di'a election results. After the was set, the news dept worked out the number

24 BROADCAST ENOIhff

www.americanradiohistory.com ® 00,000 oo,000® 00,000 00,000 MEN g2:131 00,000 00.000 00.000® 00,000 00,000 .. ® .r ® .00,000 ....,00,000 00.000® 00,000 .00,000 1.000 tttr= biligne` © -M.00,000 _-:- oo,000 00,000 000 a.---,00.000 oo,000 tr...7 © ® 00,000® - 00,000 ..--- 00,000 - 00.000,, 00,000 - AIWARZMI I=111 11=111 NISEI .w tta-1111 00,000 .. ...,0o --- ..00,000 .00,000 - 00.000 c,0 0 0 tts=11 ® t» ® Ittta - --.00,000 00,000 00,000 0 0 .00,000 G.00e - . . - 0 0.0 ® ® ==11 .00,000 - - 00,000 ---.00,000 .-. 00,000 0 ==1:13 =ZS pl. 00,000 00,000 00,000 .00,00O e© 0 0,0 0 0 0,000 - =7=19 ® mt® ® 00,000 00,000 ,00,000 0.000 -,00,000

Tom Peterson (KWWL -TV News) and Dr. Russell Ross ("U" of Iowa) anchoring a primary election with the help of their new returns board. These three display panels can handle 60 candidates. Whatever system you use, work with white numbers on black. (Photos by Mike Jamieson)

ositions we would need to studio lighting, lamps burning out removed from the motor by ener- ate and local elections. in the device, power consumption, gizing the relay. The relay will ;dr ile, the production depart- etc. On the other hand, an electro- energize when +24 VDC is applied rked on a layout for good mechanical device consumes little through the rotary switch to the ' "r ,hots. power, has no lamps to burn out, relay. Thus, the motor turns the .ual, the engineering de- and most importantly relies upon rotary switch until the relay is nn I received the brunt of the studio lighting for illumination. energized and stops the motor. rk. 'eir task was to design and Such a device is type DOU -1, which The extra set of contacts on a simple display system was obtained through a surplus the relay are used to sense when the M 100 positions capable of warehouse at a fraction of the selected number is properly dis- QI< g 1x105 -1 votes and 40 original cost. played. Total time required to cycle ;'t s capable of displaying The display face is a split -flipper through all 12 positions is 3.0 .(l +cites. which is gear- driven by a 25 rpm, seconds which is fast enough for way to increase speed is 110 VAC motor. This motor also our application. 46 to electrical or electro- rotates a 12 position rotary switch, Several ideas were suggested for * 'al output device. If an Figure 1. The motor will continue a simple, efficient and easy -to- ttn device is to be used, there to operate the flipper display and maintain control system to enhance t ' numerous problems with rotary switch until the voltage is the dependability requirement for

)176 25

www.americanradiohistory.com 9

1 accuracy. One idea was using 6 +24 VDC- thumbwheel switches to select the 5 (DATA INI number to be displayed. Figure 2. 4

Since the displays have a 3.0 second 3

turn around time, taking a few 2 more seconds to dial in the data 1 would not be an unreasonable re- 0 quest. The thumbwheel switches were also used to select which -24 VDC candidate position would receive the data. Therefore, all the data C lines are wired in parallel and CONT. NC operate at the +24 VDC level. 110 VAC

110 VAC

Figure 1. DOU -1 display device.

CONTROL PANEL

+24 VDC +24 VDC -24 VDC +24 VDC y + V CANDIDATE POSITION D ATA LED PRINT SELECT MATRIX THUMBWHEEL TH UMBWHEEL SWITCHES SWITCHES

DISPLAY BOARD WITH PRIORITY RELAY 20 RELAYS MATRIX CANDIDATE POSITIONS

RELAY CHASSIE

POWER SUPPLY Figure 2. Block diagram of the KWWL -TV election display system.

www.americanradiohistory.com rs Dep't.:You can automatically charge Ikegami BatteryPacks at onetime.

[REZZOIINI H. -33 BATTERY SEQUENCER

:ere's how: Just plug in (up to) 5 batteries,pushthe

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Save time /save money. Your ENG Battery Pack logistics problem is solved! Only one Frezzi Battery Sequencer with built -in charger does the job, automatically. Hook in 5 (or less) Frezzi HL -33/35 Ikegami Battery Packs regardless of their state -of- charge. In 10 hours (or less), totally unattended, the Frezzi Sequencer will bring each Battery Pack in sequence to its full- charge state. When fully charged each Battery Pack will, automatically, go on a trickle- charge rate to maintain maximum readiness for use. When light indicator shows "Ready" simply unhook any one (or more) of the Battery Packs according to instructions, and run. For mobile units or fixed station operation. Call us or write for information and prices.

Battery Packs, Chargers, Sequencer Chargers, and Complete Systems available. In addition we manufacture for OEM application. Network proven! Field- tested for 6 months. r information call (201)427 -1160 (N.Y.C. 212)594-2294 Frezzolini Electronics Inc. 7 Valley St., Hawthorne, N. J. 07506 For Morewww.americanradiohistory.com Details Circle (24) on Reply Card Control panel wiring is shown here with front panel down.

KHP series relays on the relay amount of time. This may cause the chassis and LED's on the control display to flip to the next number, panel are selected by the multi- depending upon the tolerances of plexed output of the thumbwheel each display. To overcome this, the switches that are used to select the three priority relays on the relay candidate position. Thus, the oper- chassis cover two possible con- ator can be operating the board ditions: remotely and still know which 1. The 110 VAC must be applied candidate is being selected to after the -24 VDC is applied. receive the dialed in data. 2. The 110 VAC must be removed When the print push button is before the -24 VDC is removed. operated on the control panel, the Thus, the priority relays insure selected relay on the relay chassis proper timing of control voltages to connects the displays, for that prevent an erroneous display. position, to 110 VAC, -24 VDC, After the control and data system and an all clear bus. This push was designed, the 140 candidate button remains illuminated as long positions needed, were divided into as the display is printing, by seven groups of 20 candidate posi- latching one of the priority relays. tions each. This enables the pro- Once all the digits have been duction department to utilize seven selected, the external set of relay people responsible for displaying contacts on the display devices, the election returns. The engineer- which are wired in series, supplies ing department was able to con- -24 VDC to the all clear bus to struct the entire project in a dump the print cycle. modular fashion. A special problem had to be The most important advantage overcome on the relay chassis. will be when a problem develops on Assume the same data is going to election night. At least the whole be printed. Refer again to Figure 1. system will not go dead, including Because the relay takes X amount the engineers responsible for an 18 of time to operate, if both 110 VAC month ulcer of constructing some 4 and -24 VDC are applied simul- miles of wire, half of which was cut taneously, the motor will turn for X into one foot lengths. O

28 BROADCAST ENGINE

www.americanradiohistory.com The control panels went to work in Operations at KWWL along with (left to right) Margene Smith, Pam Magee, Marti Nargang, Don Johnson, Sandy Yoder and John Dodge. 11

11976 :9 www.americanradiohistory.com `GENERATES GENUINE

EXCITEMENT..." ... says WOTV, owner of first e Titling /Graphics System.

WOTV tv8 time -life broadcast, inc. 120 college ave., s.e. April 23, 1976 grand rapids, michigan 49502 (616) 459 -4125. 2B

Mr. Paul Warnock President TeleMation, Inc. 0. Box Salt Lake City, Utah 84115

Dear Paul:

The new TeleMation TCG3000 Character Generator has proven to be a very delightful surprise. It seems to measure up to just about all of our expectations and then some. I thought you would like to know that it has generates' more genuine excitement and enthusiasm on the part of our employees than any other piece of equipment that I have purchased for the station in the last seven years.

May I extend our thanks to you and to those members of your staff who have contributed so much in the preparation, design and provision of this forward looking equipment and especially to Dennis Fraser, Tom Meyer and Leo Lewis. It was great having those people work with us on this project and we hope that they will continue to support us as we come to be more knowledgeable and familiar with the equipment.

I just thought you might appreciate our words of thanks. Sincerely

R. C. Smith Chief Engineer R CS : rg

30 BROADCAST ENGINEM

www.americanradiohistory.com Iroduced at the '76 NAB, the first Automated Election Reporting. Selectable Character Edging, cnpositor / Titling /Graphics System With the addition of the TED The basic edging option (EO -3000) .n delivered to Time -Life station (Television Event Display) software provides a selection of border, ,ATV, Grand Rapids, Michigan, on package, the Compositor l auto- "drop" shadow, or outline; while Ail 17. matically compiles, formats, totals, the EO -3001 Expanded Edging and displays election returns. No Option adds "slope" shadow and P results? additional hardware is required. multiple border /outline widths proportioned to the font size.

1,1 ATV Chief Engineer R.C. Smith Selection of 28 Colors. With the vies that the Compositor l "has EC -3000 Colorizer /Background For more information about the more genuine excitement Option, characters and /or back- I, Ibglerated Compositor send us the coupon ' al enthusiasm on the part of our grounds can be colored any one of below or call TeleMation Broadcast oloyees than any other piece of seven hues, with each hue available Sales collect at (801) 487 -5399.

e ipment that I have purchased at any one of four luminance levels. lathe station in the last seven Black, white, and two levels of gray yrs" are also keyboard -selectable. Each TeleMation character can be colored separately. e the discovery people Awish to thank Mr. Smith for his Background colors can be changed atraisal, and extend an invitation in four -scan -line intervals and back- toll Broadcast Managers and Engi- ground color can be substituted for nrs to compare these Compositor l character color to provide multi- fcures with any other multifont hued characters. tracter generator:

4ixed -Font Pages. Some "multi - f(t" systems can display only one at a time. The Compositor a.ws the operator to mix fonts on angle page, within a row or within r angle word. Z -ligh- Capacity Disk Memory. Sne character generators require a d: change between font changes, Is storage, and program loading. Irhe Compositor /, all fonts, as Al as the computer program and uto 800 composed pages, are ated on a single disk and are atays available - from any board location.

camera Quality Characters. The Please send TeleMation, Inc.. P.O. Box 15068 Cnpositor l obtains maximum additional Salt Lake City, Utah 84115 r ratter smoothness by using char- information on the Compositor I Titling/Graphics System. as "elements" smaller than the lilting resolution of the television Name Title item itself. It incorporates line- Nine vertical resolution and pro - t% Station or Organization vs horizontal elements of only 2nsec width - in contrast to the ,44, Address 4to 65 nsec element width typical 0)ther comparably priced systems. % City State Tr Compositor l thus provides on- -haracters that are virtually in- ,, Zip dinguishable from camera repro- Please add my name to your mailing list. artwork. J

Por More Details liude (69) on Reply fard 978

www.americanradiohistory.com Elections Mean Community Involvement

By Phil Whitney, WINO, Winchester, Va. Most communities expect their broadcast media, election officials organizations, arrangements ail* local radio stations to give them and radio amateurs or CB club. made which will facilitate a Scat complete news coverage on election Local radio amateur organizations operation. One subject to cet night -both local and national and CB clubs are usually happy to would be identification c tlk coverage. But without proper prep- cooperate with the media. The ex- amateur or CB personnel wt k aration, an election night can be perience gives them practical oper- pick up the returns at the pretil hectic, especially for the limited ating experience and helps them Ask the radio club to assigres staff. Happily, however, there are build a positive image in the com- member a job, then turn tl d some short cuts and advantages munity which often blames them over to election officials. which broadcasters can take. These for interference, real or imagined. The operators usually showitit have proven helpful in several They gain valuable experience the polling places just Its markets. which would benefit them in an closing, identify themselves,nk Get Started Early emergency, and the station develops wait either outside or wherev ttl The key to success is planning. a rapport with them which would officials request. They shoulchol As soon as possible, preferably six be valuable in an emergency situa- forms, mimeographed or prindt weeks or a month before election tion. the station, to use when the rub day, set up a meeting between During the meeting with the local come in.

FREDERIC COUNTY About The Author Isi É,4Eys6:i1 W'i

Phil Whitney is a broadcast parnnn -- engineer in the finest sense of O4k,Cr rgermer EGiENDSNIP it¡ DM RUN PP,SS the word. He goes back about GORE VA AVENtE want, and yet LAMPS SAPA. 'e as far as you'd it Sr' RUSSELLS TOTa wasn't too many years ago that GREENWOOD IROEN$$TOWN he won the coveted Engineer of ASHTON RAKERS PART. The Year Award from the NAB. DOL ANS

TEALS O S tam Over the years, Phil has written qgiE xµ l several for Broadcast -- (IeoTURO articles E.1" RIDOLETOWN Engineering. In fact, it was his STEPHENS CT, idea that we devote time and space to a column now known as "Blue Bananas and Sag Tails ".

Meanwhile, Phil Whitney and the WINO staff go about their daily broadcasts in a winning, yet unassuming manner. So pinning are they that WINC has won the Virginia Spot News Award four years in a row!

The tote board shown in this photo helps keep the station In total E perspective as well as providing the local cable TV outlet a visual r

32 BROADCAST ENGINE"

www.americanradiohistory.com Tomorrows audio consoles .. here today!

THE BIGGEST ADVANCE OF AUDIO CONTROL IN THE LAST 15 YEARS . . .

'Jt select switches. Noiseless than a VU meter ", solid state light emit- Call collect or write today. You'll find it ff / program select switches. ting meters, to the highly reliable & noise- both an exciting and profitable adventure! lio mixers. Noiseless cue less method of audio control. That's not MODELS & PRICES Do these things make any all. Prices that are almost unbelievably SC-5M Single Channel, mono $ 605 ! You bet! Probably the low (compared to what you're used to) est low distortion sound and performance that takes second place DC-5M Dual Channel, mono S 742 from any audio console to none. DC -5MS Dual Channel, stereo . S 979 price. Not only that but DC -8M Dual Channel, mono . $1,199

are loaded with features . Want more? OK, how about RAMKO's DC -8MS Dual Channel, stereo $1,760 iIet will only find in consoles exclusive SIMUL -Q or our full range gain o 10 times more; (2) you'll the cue and mon- 4''' 'these select on each input, or RAMKO RESEARCH consoles . . . period. itor mute select patch boards on each 11355 FOLSOM BLVD. tusive illuminated Touch Pad channel (except the last one). The plug RANCHO CORDOVA, CA. 95670 "switching, thru our, "better in amplifier cards or the RF suppression. Telephone (916) 392 -2100 For Mon Details Circle (25) on Repli Card Ive irre 33 www.americanradiohistory.com At polls where voting machines engineering department usually and sounds authoritative to i. tt are used, the results will appear erects a ground plane antenna tener. quickly. At polls where votes must outside and brings the lead into the be counted, the wait could be for operating position. When a low - Pooling Efforts, hours. Of course radio amateurs power transceiver is used to hit the Trading Reports don't usually have much trouble repeater, there is little problem of In communities with s,.. finding something to do while they the amateur RF getting into station broadcasters, it is often helps wait. equipment. pool efforts. In the markets h, Higher powered AM units have there may be two broadc;u The Base Station been known to get into the station fighting for a small amou The amateur two -meter net has audio channels. Most two meter business, there may be a pt,h been very effective in rounding up activity now, however, is on FM of communication between th, the election returns and feeding and usually at comparatively low that instance, one station cod

them into news headquarters from power. The outside ground plant quest the amateurs to help a t the outlying precincts. Ten, eleven antenna should help to keep the RF other the CB club. and even 20 meters have also been out of the station equipment if Some stations work out a h: used, but there's always the prob- there is a problem. ule with the local cable TN tt lem of DX causing QRM on ten nishing announcers for the t and twenty. With today's almost At The Station and taking their cable audio 1 i universal practice of establishing When the returns come in. the on the air. This allows a fewak two meter repeaters, most ham report forms are handed to the bodies in a pool effort, will groups can cover just any market. secretaries who are doing the total- cable system has local origini unless the station happens to be a ing, then on to the news depart- facilities. SO kilowatter. ment for use in analyses. They be- When the election is state Request the amateurs or CB come a valuable reference and prior arrangements should beat groups to set up their own network facilitate quick transcribing of the with stations in other marks within the framework the broad- returns which come in rapidly at trade reports on election nigh caster needs. When hams use a times. such arrangement repeater, it is often possible to have It is good procedure to have a made, the better are the chair the base station at the broadcast staff member at each of the getting the best station covene station. When this can be done, the candidate's headquarters with each market. They are as aat. either a remote pickup transmitter, to get your progress reports i 11' tape recorder or telepbone beeper area as you are to have ICI setup to get quick reactions from These can be taped on the .el the candidate or his representatives phone and the tape put on a .rt as the vote counting progresses, use when an opening ales. then a victory or withdrawal state- locally. ment as the outcome becomes When the candidate is in atti known. This is the frosting on the market, this is probably th Ot cake and sets the station getting the way you will be able tog final statement out as an aggressive victory speech actuality. Somto' news operation. if the station you have i On election night most of the arrangements with has FI. staff understands that it is a special agreement can be formulai occasion which requires extra effort tape their coverage off an FMe1I on the part of everyone as a team. receiver and select the n=dl The program or news director actualities, rather than goinit usually stays in the station, co- telephone feed. Permission tt ordinating all activities and direct- are, of course, necessary fc tl ing those outside either by tele- from each of the stations inv^`e` phone or two -way radio. He keeps Election coverage. pr1e' things moving and fills the dead planned and handled, can dal Everyone gets into the act. Of course, image ot-'ot the larger the station, more spots either with material from the toward building an the i- the network or the news wire. He petence and professionalism explicit duties. rte+ should also have prepared back- broadcaster. One thing to ground material on all phases of ber is, don't put either the suit- the election ready for use so that or CB reports directly on tl the entire show moves at a pace This is not permitted by the -C

34 BROADCAST ENGINE"

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" J: 1976

www.americanradiohistory.com Hilo WuÌiu HOW TO WIN ON ELECTION NIGHT

by Peter C. Burk, Workshop Editor watchers is to approach a service No matter how well the sysr organization (Lions, Optimists, or planned, a human failure 'v; There is a growing trend in radio other such groups) and ask them occurs. for stations to abdicate the role of for their help. In return, your covering elections to television. This station can contribute an agreed -to On The Line shouldn't happen because, as you sum of money for their coffers. You Since many of the polls wi to know, God never meant for pictures may have to set up several organi- their tabulations completi to fly. Radio can give us the "local" zations if your county has a large about the same time, it's impti, coverage. Television depends mostly number of precincts. to have several telephone lip! on the networks. After getting an organization the station set aside just fc P The key to good coverage of lined up, schedule a meeting or watchers. Remember, you'reise elections is advance preparation. two. During these sessions, assign volunteer help. If Priscilla we Planning for a general election specific individuals to precincts and body has to make more than lm should start no later than Sep- make certain each person knows two attempts to file her retun. tember. where his precinct is located. Drill may give up and go to aWi There are at least three ways to your poll watchers on the necessity Disney movie, leaving you iin gather election returns. One is for speed and accur4cy. Supply that precinct. A good rue through the local county clerk, forms that are simple to understand thumb is to use one line for en whose office may collect and post and that correspond with the order precincts. Rotating lines shoo returns for the public and news of parties and candidates on the installed so that all watcher t,) media. A second possibility is the voting machines or ballots. If you the same number to call. local newspaper which tabulates are in competition with other news Assign unflappable peo e returns. You may, with the proper media, don't be afraid to tell your answer the telephones in the air enticement, be allowed to sit in on people they may have to use strong - and caution them to have cW the process. Those two methods arm tactics to get to the nearest repeated if there is any ques'I require limited man -power. One telephone first. all. person, a telephone and a cassette Instruct poll watchers to arrive Assign people to keep "rm'" recorder will provide "bare bones" well enough in advance of poll totals as the night progresse L coverage. The addition of good closing so that they will have time runners to get the totals a is quality remote pickup equipment to familiarize themselves with their come in from the phone ope''' and a second person to act as a surroundings and find out where to the people keeping an o;(4, runner will enhance the production. the telephones are located. It is also tally and finally to the ,en A third suggestion is a system of prudent to have them double check person on the air. "poll watchers" who will telephone figures. Each precinct will tabulate Notations on the tally she your station with up to the minute totals at varying speeds. The end precinct numbers and the lat'o' returns. This requires a heavy result should be a smooth, constant can help the anchor persot SF committment of "people power," flow of returns back to the station. trends, if indeed there is a tta but will produce a lasting image of One precautionary measure get that deeply into voting your station as a professional should be taken. One or two It is important to get the pill organization. members of the station staff should numbers on the forms so lc ci A good way to get the necessary be on standby to cover precincts quickly locate a precinct O n1 number of people to serve as poll where poll watchers fail to show. be missing. Some poll MO

BROADCAST ENOIM

www.americanradiohistory.com 'Arid f gee°

aG°taS\R`g. pt°° e\i to< t°e\oG\,(\a\ro a, ogtoóaaGOS\aatas 6\é eca ° tir t a a et y° yoo Eot tessÒ a\ e \s to r1`° Nr° iatÒ syp0,60 N ope\eope x:,40 ass\s, Pgt. c eGr\ tP\ete ,(\o cf`" o\gy o de\\se5 1s \5 t co \4\G"pe G \a tpt 0 . ce5 e'ti ot d5`JÒp(` \ o pe e s Pa ° P s at e t a Pt\ce teP oGe eQJ\ttr ec\GO\oS a a \t let n G e e 6t0 ee Sc aonyv+ P Fot°o a ae 1 6 see NI \ 0 Ñß r5223 b02N 22 i+in Industries, Inc. 4500 South 76th St. Omaha, Nebraska 68127 (402) 331 -2000 Telex 48 -485 For More Details Circle (26) on Reply Card "76 www.americanradiohistory.com WOUA news director Mark Minnick anchors election night from a temporary studio while newsman Norm Cooling prepares last minute on -air script. Sound from the wire machine and typewriter help create an active atmosphere for the show.

might decide to stop off at the pub the announcer. Again, the sound Since the pace of electioi to before phoning returns. adds to the overall air of action. If can be quick at times, the - s The anchor position deserves that isn't practical, use a runner to should be edited in the fid some careful planning. If the keep the information coming. Leave delivered to the station read}oi anchor person is to sound reason- the studio door open for the outside The reporters can make it esen ably intelligent, information will commotion. the tape coordinator by gin! have to be at his fingertips as fast countdown at the start of eat n as possible. Another Angle Strive to make coverage soot s Rather than tie up reporters with you have reporters wherever ,R Background the actual collection of returns, action. Atmosphere assign them to cover various elec- Background information i e A director to coordinate the tion headquarters and track down didates should be garnered otl various activities and punch the candidates. party bigwigs and other hand along with telephone um buttons will allow the anchor political types who will make good of neighboring stations witlwr person to work with maximum interviews both during the counting you can swap stories of inter'ta effectiveness. The director can be in and after the results are tabulated. Make sure each reportetha the same room with the announcer. These reports can be phoned back transistor radio earphone enied, It isn't necessary to create a sterile to the station, put on cartridge and in his ear. This not only falit, control room environment for the used by the anchor person as going live, but helps hii show; the extraneous sounds in the needed. Live reports add even more abreast of the returns. He'll =+ background actually let the listener excitement to the sound of the to say during an interview "v in on the excitement of the action. event. Clapsaddle, WHIM is rert A form of communication must be A staffer should be assigned the that Phil A. Buster is ahead>ri established between the director responsibility of "tape coordina- thousand votes. What do Wit and the announcer. You may use tor." His primary function is to of this big lead ?" pre -written signs or you might try record voices and actualities from Another reporter can be sill using an earphone so that the the field and shuttle them in to the to the newsroom to collet Vll director can give verbal cues. The director. He should be able to from outlying counties as fi communication is needed, of record carts from several phone around the state. And, aftert'i course, if the director is in another lines, your remote pickup receiver, over, someone should be gt8 studio. and a cassette recorder. As the the task of getting all the OW The announcer should have a reports come in from the field, they condensed into usable store wire service as close as possible to can be dubbed directly to cart, tapes from the "morning se stay on top of national and regional timed, and labeled. A large sign complete election wrap. races and to plug the holes when with a lead -in for each cart can be Everyone on the staff fill the returns thin out. Ideally, the made for the director to hold up in general manager to the cu°a printer should he within reach of front of the anchor man. will probably have a task 818

38 BROADCAST ENGIN

www.americanradiohistory.com action night. The one excep- the very handy technique of using over and over and over. Covering 10 this should be the chief the microphone for the intro, an election is one step in the direc- her. Murphy's Law was passed pressing play for the actuality and tion of recovering the ability to use a presidential election, and then back to record for the close. radio to its full capabilities. et, election night brings out Too bad. Take the opportunity. It doesn't little gremlins. It isn't very come along that often these days. ing if the control room Use Your Own With sonic planning and a little catches on fire while ace Imagination sweat you can have one hard, long hooter Skip Signal paces Coverage of an event as it day and go home blurry -eyed with at some remote precinct. happens is what radio does best. the feeling that at least once in the What has been lost is the ability to last 365 days you did something Getting Started make the listener use his imagina- that "knocked 'em dead." You did Itcan avoid a tense atmos- tion. It would probably be difficult something that was important. You it by starting off the evening for many of us to present a radio actually did provide a public ser- b bit of a party. Have pizza or format without the use of records vice. O In or some other delicacy in beforehand, and let 1e in the station get started h a full stomach and in a 'd mood. Also, encourage members to help out with rulation effort...assuming you speaking terms with family COMBINATION k° The feeling of a "team o instills pride in what is ¡done and makes for an /7A A n better election sound. 4 ...... he, now we've concentrated on t ;ístics of election coverage. I dsly. the technical aspects fte planned carefully and pre - bf Murphy is to be beaten at act game. The key thought is IJ is simple. Election night is not tt e to experiment with lots of rt new gadgets. Along the shines, make each electrical *lion as if it were going to be Pled at the arts and crafts fair. s' have to get started a little but save when it It it'll time THREE ACES FOR THE STEREO FM BROADCASTER the most. F :i have remote pickup units. Time Division Multiplex Stereo Generators Ickthem from the intended All solid -store, excellent 30 KHz suppression and channel sep- Oi, well in advance. If you aration. Built in tracked pre-emphosis, remote mono /stereo e fly one dead spot in town, switching and optional phase equalized input filters. Ibtnd to be right where you i anned to use the RPU. Solid -State Phase Lock Loop Exciters leer possible. have a backup Frequency synthesized circuit provides stability of ±500 Hz Fran hand and ready to use. over o wide remperoture ronge. Uses single crystal ro operate btoring in the field has been on any 100 KHz increment in the FM bond. Output power At.e of embarrassment for adjustable 5 to 20 warts. te an one engineer. During the FCC Type Accepted FM Transmitters 'ten you check things out High efficiency, increased reliability and reduced mainte- tang seems fine, how is it nonce. Sliding shorting contacts for tuning and loading. F J change pattern or power? Grounded grid, zero bias final stage. Directly adjustable out- Ee of your reports will prob- put power. Provision for remote control stondord. 'ae by telephone so make +8, order additional lines well id'nee and that your connec- !tthe line is clean. At the send -1/ierr 4r-ft-ECTROMC-S-INC. °the line, it's pretty hard to 2607 RIVER ROAD CINNAMINSON. NEW JERSEY 08077 'cassette recorder for a line PHONE (609) 786-1060 TELEX 831679

e ' the way, some of the new csI Transmitters Available In Canada Through International Technical Products (Canada) Ltd. +rieon't go into record without 7 Bowie Driva. Point Clain. Quebec 149A 4W3 Telephone 514.695.8130 Teier. 05-821 -529 1t" moving. This eliminates For More Details Circle (27) on Reply Card r0a976

www.americanradiohistory.com Audio Automation The author is shown using new "tools trade ". Ciapura checks scope camera pho in this article. The photos were taken direr Quality Control a low frequency spectrum analyzer.

half the job -how about distortion Better And Practical By Dennis Ciapura, BE Audio Editor checks? Testing tape decks for dis- Fortunately, there is a belt. tortion can be a rewarding effort A new breed of lightweight because a "muddy" or "scratchy" tively inexpensive low fret Modern automated broadcast sound can often be isolated quickly, spectrum analyzers has bya stations often employ three to six but, unfortunately, distortion test- available in the last couple oyd reel -to -reel tape decks as well as a ing for tape decks at the station and these units can be ju number of cart playback units. level is almost non -existent. ticket for speeding up reall r Even keeping track of the fre- One reason is that low distortion rough testing of tape deck pus quency response of this number of test tapes are difficult to obtain and ance, thus making complete se program sources can be a full time interpretation of the test data is not of each source practical to job in itself when done by the usual as straightforward as you might routine basis. methods. It is surprising that in an think. When attempting to measure The low frequency spét age when automation of broadcast distortion with a common nulling analyzer makes it possible t r< programming has reduced the type of harmonic distortion meter, amplitude vs. frequency rath.0 amount of manual labor required any speed variation will result in amplitude vs. time, as an ca to get a well controlled, top quality the test signal falling out of the scope does. This means th signal on the air, little has been notch, thus clouding the true dis- amplitude response of a 'st done to make comprehensive test- tortion reading. Since tapes hiss is across the audio range can It ing of these systems as common- rarely more than 50 dB down, played. If a variable fretct place as it should be. which will show as 0.3 percent dis- audio generator is synchroned Even the very best quality audio tortion, the rather high noise level the sweep of the display, ti automation gear will only provide of tape systems can be a problem quency response of the syste t an air product as good as the too. be displayed. The most [WI maintenance program that rides The state of maintenance at most form of low frequency sptr herd on the myriad of audio para- automated radio stations these days analyzer is one that is couplc t meters which combine to create goes something like this. Since the scope with storage capability what we call the "sound" of the annual proof tests the system for type of test setup will plot t:

station. Multiple program sources distortion, frequency response and quency response and freezeit . complicate the situation from the noise from the console input to the the screen for detailed exams* standpoint of source -to- source uni- transmitter output, it is assumed and /or photographic recordit. formity, too. Non -uniform response that the station will accurately Units like the Tektronix'', from one tape deck to the next is a reproduce what the automation which we use for many dead giveaway of a sloppily auto- system puts out. Meanwhile, auto- magazine's lab tests of new q. mated station, aside from being mation audio maintenance usually ment, contain a built -in tF' poor broadcast practice. consists of routine mechanical generator. The Tektronix út One partial solution is to run a maintenance, frequency response available with a 20 to 20,0001 standard alignment tape through checks with a standard test tape sweep scale to conform to N' each tape source each week to once in a while and, at some sta- audio testing configurations, assure proper operation of each tions, a phasing check and adjust- as linear sweep ranges P unit. As anyone who has done this ment when the response is checked. 100,000 Hz for filter test procedure very often knows, this It is assumed that the tape heads, Vertical deflection sensitivity t" can be time consuming task. Aside playback preamps and all interven- either 10 dB or 2 dB per divo from being time consuming, a fre- ing electronics are distortionless. The low frequency spit quency response check alone is only Now that's a pretty big assumption! Continued on 19'

40 BROADCAST ENGINEF'

www.americanradiohistory.com T

Maintenance....As The Manufacturer Sees It

dcast automation equipment drop out sometime, and your trusty takes a great deal of time to erring more complex and old programmer is no exception. troubleshoot a circuit even at the all the time. If you think You would hope that your trusty factory where super test gear, 100 ming statement is contradic- new programmer will display some percent spare parts and the guy ou're right. But, it's also measure of restraint in this area. who designed it are all available to The new breed of digital However, let's assume that some the repair technician. ast automation gear has unforeseen gremlin has taken up Many manufacturers operate an ities that no one dreamed of residence in the inards of your emergency service to assist en- trs ago, and yet, new ad- digital automation system. First of gineers who have problems in the in circuitry technology, like all. we ask Tom to think for a while field and provide replacement rocessors, have reduced the and describe the largest or most modules and cards. The station complexity. if you know the frequent difficulty in servicing digi- engineer need only locate the defec- roach. To get a broad - tal automation systems in general. tive sub -assembly. ea of how automation His reply didn't surprise us, for as What we are getting at is a whole can most efficiently be we had suspected; lack of familiar- new approach to equipment servic- at the station level, we ity with digital circuitry at the sta- ing. Learn how your system works to visit an automation tion engineering level was his at a module level and understand t factory and talk to the report. This is not to say that as much as possible about how the make the stuff and see broadcast engineers are short on electronics works. For example, the had to say about field smarts or that the new systems are audio circuitry and power supplies After all, they design and too complicated to be successfully should not be formidable trouble- d if they can't fix it, who repaired at the station level. shooting problems. but leave the The simple truth of the matter is really hairy digital problems to the st company was Control that the state of the broadcast factory. If you learn how to use a orporation. automation art has reached the logic probe, you can sometimes find ad of Control Design's R point where the station engineer the defective component very rtment is Tom Kitaguchi, cannot be expected to completely quickly with no further assistance, ad an opportunity to talk understand how his system does but if that dosen't work, trade in ,some length, particularly in everything that it does. It is diffi- the card. to field service of digital cult for full time design engineers With automation systems like eat. Tom had 17 years of to keep abreast and broadcast those built today, the use of re- experience before joining engineers should not feel guilty, dundant circuit cards in both !Design, having worked in inadequate or imcompetent for not digital and audio switching sections dreuit design for Bunker understanding totally all the details makes it possible to keep the most 11d Martin Marrietta. of how the mini -brain works, and important sections of the system is CD28APM at the end of it's not necessary. operative in the event of a circuit I finger in the shot of a Many engineers are discouraged failure. All the redundancy in the system. This unit under- by the futility of trying to trouble- world, however, won't help if the speaks English and is shoot digital circuitry by the classic engineer is not aware of which Ire easiest automation sys- DC or signal flow method and be- circuits are redundant. So we see program that we've ever come soured on digital equipment. that the emphasis should be placed should be a hit at some of The correct approach is to learn on knowing how to use the modular tiler stations that have to how to use a logic probe and be- building blocks in modern digital with semi -engineers. come familiar with the logic flow as systems to their best advantage, least equipment manu- well as the audio flow so that the thus simplifying the service process. t don't usually like to admit defective module or card can be In the beginning we said that it products fail (but neither found and a replacement obtained. broadcast automation systems were Iorant manufacturers) and In many cases it is not practical getting more complicated and m to give Control Design a or advisable to attempt to trouble- simpler all the time and they are. edit for their candor in dis- shoot a defunct logic circuit right They are more complex electronic- Itlle topic with us. But, let's down to the defective component, ally. but for the broadcast engineer tSys. anything more compli- and it's not necessary. You may be who plays his cards right, simpler d o a pet rock has got to surprised to know that it sometimes to service.

www.americanradiohistory.com perly nulled using conven,. methods. For normal audio equil,,, where there is no time lag bt,:c input and output, the trac generator built into the k Figure 1. Shown here quency are 70, 700, and 7000Hz spectrum analyzer c, test tones and har- used to paint a frequency res., monics at tape deck graph with 2 dB /div. vertic... output. Harmonics for fliction. This type of responsi., 70Hz are -50dB or 0.3 ing is great for consoles and ae percent. For 700Hz. mitters, but it is not possible !tt -60dB or 0.1 percent. tape deck because the spat t for 7000Hz and -50dB tween the record and plap, or 0.3 percent. heads of a tape deck resultan time lag that precludes trio( Continued from page 40 generator /analyzer synchronizin analyzer can paint a very detailed give a good indication of how After experimenting with vin frequency response graph in 90 strong, low frequency music funda- pink noise techniques, thesewe seconds. but the method really mentals would be reproduced. finally discarded for lack of so earns its keep in the distortion 700 Hz falls in the mid -range tion and difficulty in obtn; measuring department. When set portion of the spectrum and is high repeatable results. The best nth for 10 dB /div. vertical response, it enough in frequency to allow for was to use the tracking generar

is possible to display the funda- the second and third harmonics of apply an audio band sweep i mental audio frequency and all the 70 Hz tone to be clearly seen. test tape and manually synchn significant harmonics in a single Since FM stereo bandpass is usually the beginning of the sweep trace. The harmonics really show limited to 15 kHz, there is little spectrum analyzer with the sri up since the screen is eight divi- point in using a fundamental above the audio sweep on the testtc sions high and a harmonic amount- 7 kHz for the high -end test since The tape deck output cann ing to 0.1 percent or -60 dB, would even the second harmonic will be displayed through the speri be six divisions of vertical distance on the edge of audibility. The analyzer input, however, slot e from the fundamental. spacing across the screen also exact coincidence of inpu With a narrow bandwidth setting, allows for unobstructed viewing of at tape and analyzeror noise does not enter into the picture the harmonics associated with the result in a trace. It is, of mr

at all, only the distortion com- 700 Hz mid -range test. impossible to obtain such :r1, . ponents of nonlinearity. Since we For tape deck testing the test synchronization due to the si are looking at the reproduction of tone must be recorded on tape, and tions of manual start timin r the input signal and the spurious this task is not as difficult as it may tape deck speed variations T outputs that result from the imper- seem. Using a Scully 280. we were problem was solved by usit fection of the reproducing equip- able to easily generate test tapes storage oscilloscope coupledto ment as they really are with no with less than '/: percent distortion conventional preamp wi nulling or gain setting functions, at the low end, 0.1 percent in the second sweep timing cominlfa the, method is ideal for tape work mid -range and less than '/a percent the spectrum analyzer. This rte. and thus valuable for automation at the high end. The duration of provides a linear voltage vs Iq . maintenance where several units the tones should be timed to match rithmic frequency display. Irot' need to be checked often. the sweep speed of the spectrum words, our graph will be a slid, analyzer as it traces across the 20 to 20 kHz frequency rear Three Range Tests screen. A 90 second sweep speed is graph from left to right, b To be able to paint a comprehen- most practical for two reasons. First read output voltage verticy sive distortion test in one sweep of of all, it provides greater resolution screen overlay was construed the screen so that test time can than faster speeds and secondly, is convert the vertical divisüs be minimized, careful selection of easier to synchronize. decibels for convenience. the test frequencies to be utilized is The test tones were applied to the The two test procedure .1 required. Ideally, we would like to tape at full 0 reference level using described each require abet have a distortion check in the bass Ampex 406 tape which will not seconds to accomplish. Assam, range, one in the mid -range and saturate at 7 kHz even at full level. stereo system, frequency rte" one at the high end. To be able to The end result of using the distor- arid distortion measuremer paint three fundamentals and har- tion test method just described, is both audio channels would c11. monics up to the limit of the audio that a very accurate picture of the about three minutes of test tie. range test frequencies of 70 hz, 700 mid, low and high frequency distor- course, as with any test prod Hz and 7,000 Hz were chosen. 70 tion of a tape deck or tape source there is some space betwec Hz was chosen because it falls be- of an automation system can be ob- ments and set -up time, but t" tween the 50 and 100 Hz fre- tained in 90 seconds or about as no doubt that low frequenc;s, e quencies usually used for low -end much time as it might take to trum analyzer testing of tat testing and is really low enough to decide whether the meter is pro- is the hottest thing on phospo

42 BROADCAST ENCINttA'

www.americanradiohistory.com Silent Partners

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For More Details Circle (28) on Reply Card f 1976

www.americanradiohistory.com then scheduled to be rebroadcast in ber that lots of interest hasilli Sacramento. The show required two generated in AM stereo. Aral receivers, so it called for both sta- when the NAFMB changed GETA tions to promote combined listeners name to the NRBA, they mat to have "Quad Parties ". clear that the organization "In the final analysis," Gabbert activities would be directed said, "this is the first attempt at AM and FM. BETTER network broadcast of discrete four If you haven't already channel stereo is both innovative plans to attend the conferen and exciting." time to get started. Drop a NRBA, 500 Fifth Avenue, Not ALL AM York, NY 10036, or call BANG While this sounds very much like Saldan at NRBA headqua' FOR a strictly FM assignment, remem- (212) 869 -8873. YOUR NRBA Exhibitor List *ACTION Johnson Electronics *Aetna Business Credit *Kalamusic Ampex *Dean Landsman Radio Scni BUCK! Ampro Corp. LPB, Inc. *Arbitron Radio *Jack Masla & Co. *The Associated Press Master Control. Inc. BCS /Kamen Sciences McCurdy Radio Industries. In Belar Electronics McMartin Industries, Inc. *Blackburn & Co. Meloday Productions *Bonneville Broadcast Consultants Micro Trak Corp. Broadcast Electronics Moseley Associates, Inc. *Broadcast Marketing Co. *Mutual Broadcast System Broadcast Programming Internati. Orange County Electronics *Kent Burkhart & Associates Orban Associates Cablewave Systems Otari Camex Corp. Pacific Recorders & Engineer' *Cavox Stereo Productions Paperwork Systems. Inc. CBS Technology Center *Peters Productions CCA Electronics Corp. Phelps Dodge *Century 21 Productions & Prgmg. Phillips Audio -Video Cetec (including Jampro. Schafer, *Progressive Radio Network Sparta. and Vega) QRK Electronic Products *Chicago Radio Syndicate Radio Arts. Inc. Collins Radio Group *Radio Programming /Manage Concept Productions Rapid-Q Control Design Corp. RCA Broadcast Systems Cox Data Services Revox CSI Electronics, Inc. Sansui COLORTRAH'S *Disc -Location Sine Systems Dolby Laboratories Stanton Magnetics PRO KIT IV. Drake -Chenault Enterprises *Stereo Radio Productions *Eastman Radio Systems Marketing Corp. A COMPLETE Electro Sound. Inc. *William B. Tanner Co. Fax Net. Inc. Telex Communications 4 LIGHT KIT Fidelipac Time & Frequency Technolog> Harris Corp. (Gates Radio Div.) *TM Programming. Inc. FOR $629. *H. G. Productions *Torbet- Lasker, Inc. IGM UMC Electronics For more information write: lnovonics *United Press International Berkey Colortran, Dept. BE -876 International Tapetronics U.S. Army Recruiting Comma' +i 1015 Chestnut St., Burbank, CA 91502 U.S. Pioneer or Telephone 213 843 -1200. *Hospitality Suite only. Others are exhibitors.

Berkey Colortran a .

46 BROADCAST ENGINEE1

www.americanradiohistory.com fina l

F M LOU IE SS

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F mono, stereo, quad - FM SCA - TV Audio Excellent Leverage - greater than 50:1 Extended Control Range - e dB Clipping not routinely produced Fast AGC attach times - less than 20 microseconds Very low harmonic A ermodulation distortion Optional plug -in audio low -pass filter Operation over wide temperature range No Test Mode - run proofs thru TFL -280 Ibiss and clarity without compro- problems associated with the transmis- distortion -reducing techniques are N. the Moseley Associates TFL- sion of pre- emphasized audio, including some of the technological advances Pt lio Limiter precisely controls the the ringing (over -modulation) produced incorporated into the TFL -280. Other ion levels of FM and TV aural by low -pass audio filters. Using agile features are accurate metering of !II ter s FM monaural, Stereo, limiting circuitry, clipping and its attend- limiting, optional plug -in audio low -pass Idfihonic, FM SCA, TV aural are all ant problems are essentially eliminated. filter, operation over wide temperature W processed. This frequency - Monolithic semiconductor arrays, wide - range, and thorough RF shielding and ^ (us limiter cleanly solves the band operational amplifier circuitry and filtering of complete unit.

P L-280 Audio Limiter, when combined with the Moseley Associates SCG -9 MWienerator, make an unbeatable combination for FM stereo. If your FM ester is at a remote location, add the Moseley Associates PCL -505/C Composite 14itsdio- Transmitter Link for totally uncompromised performance.

L -280 will be unveiled for the first time in Booth MOSELEY ASSOCIATES, INC. ' ng the NRBA Convention in San Francisco. See SANTA BARBARA RESEARCH PARK - or contact our Marketing Department for ' Bulletin 255 describing the TFL -280. 111 CASTILIAN DRIVE GOLETA. CALIFORNIA 93017 U.S.A. (805) 968 -9621 TELEX: 658448 CABLE: MOSELEY '.1 VtNUING

For More Details Circle (70) on Reply Card 141 1976

www.americanradiohistory.com Even Lon Chaney Would Applaud... Eliminating the News BluM

By Neil Water

TV stations are getting the quality of its news film that was able green with manual "pain annoying blues and greens out of frequently shot under adverse light- Mr. Wolters reports that sic.

their news film, correcting sour ing conditions. In addition, the management may purchase tie . colors in old TV movies, and station had been troubled by a and system for the other film a shaping up their videotapes with an residual green cast in its processed to help balance the work load automatic color correction system. films. Filters did not solve the light- Two TV stations in the St. Designed for use with film chains, ing problems and a concerted effort area are using color correct( electronic color conversion can on the part of the station's lab accomplish different objet' "paint" video signals to wipe out technicians and the film manu- KSD -TV, a network affiliate the leading causes of color mis- facturer failed to root out the cause tion, is primarily concerned n match: black -white level imbalance, of the green cast. news videotape color corre colorimetry errors, and variations in Dale Wolters, chief engineer at while KPLR -TV, an independ( film processing. WZZM, heard about a new color funneling all of its programs Color mismatch in TV pictures correction system and thought that the majority originating from :, on the viewer's set may be due to it could solve both problems at films, through its color corree

the interspersing of live, videotaped once. Wolters says, "As soon as it Ed Risk, chief engineer of ' and filmed program material or it was put in service, our news film TV says of the system: "W may be caused by variations in the showed a definite improvement- glad to ' have it-it does n( quality of the projected films or flesh tones became natural and the everything in the world, b slides. Non -uniform color densities sky looked normal." As an after- helps." He explains that the in film are due to errors in film thought he added: "Our local news must be aware of the sites exposure or processing. If the film now looks better than many of where an electronic color cor filming was done under adverse the filmed stories from the net- will help and must not expect lighting conditions or the film work." overcome poor signals or processing strayed from the narrow The color corrector was coupled equipment. limits of time, temperature or to one of the station's two film "We are using the color core chemical mix, you can expect color chains and, according to Wolters, for news tape correction only.' errors. both are run together about 20 Risk, since the use of film a t Another factor, color tempera- hours a day. "That one film chain station is diminishing. ture, is introduced when films are handles all of the news film and The color corrector is an in processed for projection with a light movies -everything but the com- part of the station's elect" having different spectral character- mercials which are run on the other journalism project and stations' istics from the light source em- chain." he explains. sonnel are hard at work perf( i ployed in the telecine chain; color Although Wolters says that the the internal distribution ins' variations will be apparent. Also, color corrector is operated more tion. He reports that the color. the splicing of color film strips than 99 percent of the time in the rector is most often used it' processed by different methods automatic mode, he is particularly automatic mode (taking mor leads to color mismatch. impressed with what can be done in small deficiencies), "but pe Color errors can also occur in live the manual mode. "We are able to once a week we might get `'' programming where cameras of make significant off-line improve- thing that is so bad we have different design or manufacture are ments in old movie films that have something about it manually." used -even when they are properly discolored with age," he says, ex- KPLR -TV, by contrast, sen( adjusted and operated. These errors plaining that the films can be run outgoing pictures to its trarsrr' are due to differences in response through the corrector as many regardless of source, throng between the video tubes and their times as needed to preview the re- color correction system. To ac( related optical trains. quired corrections and the final this unusual air -line applic('' results can then be videotaped for the station assembled an equipF Different Problems, later replay. He tells of one instance package of its own design mad' Different Solutions where money that had turned to a of a station -built process am[' WZZM -TV, Grand Rapids. revolting sepia in an old commer- and automatic gain control,9 Mich., wanted to improve the cial film was restored to an accept- color corrector system and a 'A,I

48 BROADCAST ENGINEEr`

www.americanradiohistory.com produce an omnidirectional circularly polarized pattern. A panel antenna for face mounting on the tower (Channels 7-13) may be POLARIZED ANTENNAS. installed as a horizontally polarized antenna, with the NOME When is ability to be FCC approval granted, RCA converted to will be able to help stations improve circular polarization. Ask their signals with three circularly your RCA Representative for full antenna polarized TV antennas. information. One is a top-mounted Fan-Vee for Channels 2 through 6. It uses AME individual radiators for horizontal and vertical polarization. They are phased TE N, PHILADELPHIA, to produce the circularly polarized pattern. THE !MASTS WORLD'S Another circularly polarized fl:. POWERFUL antenna, the End Fire Helix, is for Channels 7-13. It uses three small /AIRECTIONAL TV SIGNAL. reflecting dishes mounted per layer

tfe.me put our new system on-air around the top-mounting pole to 15' Ch. 29's 'A' market coverage alt 168% to 9,870 square miles," for Taft Broadcasting Corporate 'aident Bill Hansher.

_.? market coverage 68 %."

V ver reaction was extremely rode -we were even getting too es from Manhattan, Baltimore d stem Pennsylvania. D 5 megawatt signal makes îA TV the most powerful tit ectional TV station +'w re-but we achieved our .Rii in ERP with operating it. of 25 %, thanks to RCA

Inn 1, 'W;elected their TTU-165c glsrter and a 40-gain TFU-40

Pier . Since this 165 kW UHF Oiler needs less primary power, lic t us less than a 220 kW Otter would have, we realize liY' lcome economies.

erational savings of 25 %."

..N than two years later, we're Teased with the RCA system's elice." igi lore about the WTAF 5de see Broadcast News #155. Four 55 kW vapor -cooled klystrons are and 2 are combined through a 3 dB used in the TTU -165c. A unique combiner to produce 110 kW peak triplexing system developed for the power. The signal is fed through a 4.77 WTAF -TV transmitting plant combines dB combiner where it is added to the the outputs of three of the klystrons. As output of visual amplifier 3 for combined len shown in the diagram, visual amplifiers I visual peak power of 165 kW.

For More Details Circle (I5) on Reply Card 101976

www.americanradiohistory.com Monte Walpole, KSD-TV, St. Louis, is shown here making color correction adjustments from the remote control panel.

"1.11°'

www.americanradiohistory.com atomatic level control. coded output of telecine chains, found in the black and white Mcombination of equipment camera chains and videotape re- regions, a circuit determines the Jut together forms a very corders. And, as you've already relative phase and amplitude of the ,:ive package that enables seen, no two stations are using it in error component and generates a roduce network quality exactly the same way. matching signal of opposite phase. d low cost," declares Hal The color corrector "disassem- When summed with the error sig- ice president and general bles" the NTSC video signal into its nal, the correction signal cancels of KPLR. He asserts that constituent components so that the unwanted chrominance com- ion's use of the color access may be gained to these ponent. 'in that way is unique and components for correction pur- The sampling is continuous with end the recommendations poses, either automatically by the the error signal integrated over on -CSF Labs. sensor or manually with the color eight to ten TV frames. These ad- says that the station is corrector controls. The luminance justments are automatically up- inced of the value of color component of the NTSC signal is dated at one of several attack time i, but it wanted to en- first removed and isolated from the rates that can be selected. Correc- e equipment's ability to chrominance component. tion release -decay time is also completely automatically, The chrominance component is selectable in several steps. ,a day, seven days a week, then demodulated to form R -Y (red aving to be touched. "The minus luminance) and BY (blue Correction Limits matic and manual paint - minus luminance) signals that are The system is designed to correct tres are nice, but for us sent to a mixing matrix and the NTSC signals containing improper operation is far more sensor unit. The R -Y signal is also black and white video levels only if tt," he stated. sent to the phase detector which those limits are within specified ccolor corrector is most also receives a burst gate_ pulse ranges. Black must be within the ifin automatic, and when it needed to form a color correction range of 7.5 to 12 IRE units and ngig good dark blacks and signal. Both of these signals control white must be within the range of whites there is almost the 3.58 MHz color oscillator that 95 to 100 IRE units. i t can't handle," he said in supplies subcarrier inputs to the When these levels are absent. no tvg why the station designed internal demodulator and modu- corrections are made because it is 1t its own preliminary lators. .possible that neither black nor and AGC stages. "They Color gain and gamma control white were intended to be in the at the color corrector is circuits provide manual control of picture. However. active corrections ie signal levels it needs." all variables, or they can be for the presence of chroma are ation manager said that controlled by the output of the made in magnitudes up to 20 IRE was bothered more by a sensor. Re- encoding and modula- units. No correction is made for a green cast in its slides tion circuits (including the R, B, greater magnitudes because the and that this situation and G black -level controls) re- chroma could be a desired part of inely corrected. He also assemble the video signals to form the picture. at the color corrector is the final correction signal that is The system cannot overcome the in correcting color camera added to the main video in the effects of poorly adjusted or defec- during live programming. output amplifier. The color correc- tive film chains and cannot correct tor also contains circuitry for color signals that depart from NTSC How It Works killing to prevent mis -correction of standards. )lor correction behind the monochrome signals. t these stations was de- Editor's Note: ny Thomson -CSF Labs. Sensor Subsystem Automatic color correction sys- package is a three - The sensor unit is selected with a tems will continue to he a factor in nt color correction system switch for automatic or semi- technical color fidelity at station. of an NTSC color cor- automatic black and white level But, as we all know, the end result odel 5500A); a sensor unit color balance control. It works on must have some effect on the 550) and a remote control the red and blue color axes to viewer. As much television as we all 'SSS). Together, the color remove residual coloration (chroma) watch, it's obvious that some tech- and sensor handle the from the black and white regions of nical help is needed. As Ed Risk .mmon black -white im- the composite NTSC encoded sig- says, it doesn't do everything in the conditions automatically, nal. The unit automatically pro- world (for the signal), but it helps. .ual controls on the color vides the feedback that otherwise The examples cited here show permit an operator to would be introduced by manual how one system was used to sole

, or at least minimize, controls in the color corrector color problems. Other manufac- are color problems such as circuitry. turers can be found on page 82 of mistracking. A feedback arrangement gener- the Broadcast Engineering 1975 ed as two l'/. -inch high, ates and adjusts the correction Buyer's Guide. And as a reminder, ack mounted cases with an control signals and sensor circuitry the Reader Service cards in our ! eited remote control for examines the uncorrected signal for annual Buyer's Guide are good for mounting, the equipment maximum and minimum luminance one year from the date of publi- erectly on the NTSC en- levels. If a chrominance level is cation.

976 www.americanradiohistory.com tones end. K2 is deenerg the line is returned to ö Originally. K2 was omitted was tound that there was nv

cessive amount of bass roll s the audio fed through T2 1, Controlling Two Stations time, and rather than re -t14 With One EBS Unit the system the relay was add(

Just wanted to send you a copy of The left and right audio lines In FM TEST. activatit t a scheme I worked up here for con- from the WPLZ automation system COMMAND switches clos( 1 trolling two independent stations are fed into an auxiliary. locally and the EBS tones are fed ' with one EBS unit. with no constructed EBS control unit, as is to the transmitter through w -i

patching and a minimum of switch- the AM line. The FM lines go 2 -4 and 6 -8 of T2 and 1 -3 , ing. This system also provides good through the normally closed con- and 6 -8 of TI. The automat re impedance matching and allows the tacts of relay K1. and the AM line deenergizes K1. connecti entire control room facility of an through the normally closed con- transmitter back to the auteat AM station to be used for actual tacts of K2. An 8 -pole. 3- position system. EBS emergency programming into rotary switch selects the three EBS In the OPERATE positio) t. the AM and an FM station as well. functions: AM TEST, FM TEST, K1 and K2 close and the ton I realize that there are many and OPERATE. Transformers T1 both transmitters simultaneoa) schemes which would work equally and T2 are Thordarson 25A46 the NORM /SIMUL switch is]:. as well. hut naturally I favor my interstage transformers containing in SIMUL before the tones el own. If you think it might be of two 500 -ohm primaries and two relays stay energized and emi_ interest to your readers. please feel 500 -ohm secondaries and are used programming can be broader free to use it. for coupling between the AM, FM, both stations. Switching b When planning for the new EBS and EBS tone generator. The EBS NORM will place the station I. system installation at WSSV/ unit is the TFT 760. in normal operation. The :M WPLZ. it %%as felt that means must When the EBS FUNCTION position may also be us', he provided to make the system switch is in AM TEST. it activates simulcasting a regular nor' operation as simple and foolproof the COMMAND switches on the gency program which origin as possible. The diagram shows our TFT closes relay K2. coupling the the AM. and saves patching system. which provides for separate AM signal through transformer T2. aches. AM and FM testing. and for At the sanie time. the two -tone In normal operation. the t simultaneous operation in emer- signal is fed into winding 2 -4 of T2 room operator activates the r. gencies. Provision is also provided and coupled into the AM line. Our MAND switches for the A - for simulcasting a regular program TFT was modified in accordance after the EBS announcemen : n without a lot of patching schemes with TFT Application Bulletin 75- ing ends. For FM. he monit', .. being necessary. 02 tor automatic reset, so after the Continued on

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For More Details Circle (30) on Reply Card 52 BROADCAST ENGINEF

www.americanradiohistory.com 1i Cs is all you need to get moving with Dolby FM

EC]l potti tM 4NseM Mw MeM 334 Dolby t.eo,.tou., m.

rthe first time you came across cassettes. But the overall results are just 334 FM Broadcast Unit. The unit accurately cassettes? And how surprised as important. Dolby FM is cleaner, with compresses the signal in accordance with that music could sound so good sparkling high frequencies free of the Dolby B -Type characteristics and convenient form? limiting. And, of course, noise is reduced, changes the effective transmission time - which often increases the area of good constant to 25 microseconds. This allows the same principles are being reception. the station to reduce or eliminate any high mprove FM broadcasting. The frequency limiting required previously. ect of the Dolby system as used The only extra station equipment obit more subtle than with required is the Dolby Model

Already moving with Dolby FM in the US:

140 FM stations 33 consumer products* now equipped now available to transmit Dolby FM to receive Dolby FM signals Dolby FM signals Signal Recoverability

fr ers can hear for themselves, Naturally, the noise is reduced. But that's If these prospects excite you, we think you qit DM signal is compatible when not all. Dolby compression is will soon be wanting to check out the Nt I on their normal equipment standardized, recoverable compression. Dolby Model 334 FM Broadcast Unit. Ilo )olby decoding. By using Dolby encoding instead of the $1,350 and 1,1 inches of rack space are all conventional high frequency limiting you need to get moving with Dolby FM -an ', some listeners like to take normally required during transmission, improvement we think both you and your ge of every opportunity for the station gives the listener at home the listeners will appreciate. ment If they use Dolby circuitry opportunity of recovering the full sception, they can bring the frequency range and dynamics of the fen closer to the quality of the signal. Furthermore, depending on the source material used at the amount of limiting previously used, many stations find that Dolby encoding permits them to increase their level - which is good for both the listeners and the station.

'July 1978 The products are tuners. recelvere end music centers wilt designed -in Dolby decode circuits. requiring no extra wiring, adaptors. or calibration procedures Write tor the latest list of FM Products made by Dolby II . Technical literature describing tnese development. Is vHlabb.

NRBA, visit our display at Booths 106/110

731 Sansome Street 346 Clapham Road Dolbÿ San Francisco CA 94111 London SW9 ratories Inc Telephone (415) 392-0300 Telephone 01- 720 1111 ele double -D symbol are trade Telex 34409 Telex 919109 Iby Laboratories Inc Cable Dolbylabs Cable Dolbylabs London

For More Details Circle (31) on Reply Card "1976 53 www.americanradiohistory.com Station -to- Station Continued from page 52 QUARTZ MATI C e

LLI I AUDiO FM RM7R IfF7IN STUDIO CLOCK with the "instant" advantage FM RIGHT AUDIO FM /MIR RIGHT IN

AM. o UP

NO AUDIO

OP va,I or SIMUrNt iCe`G/illlil,l-1 rf1 RI NOW

Makers of fine clocks since 1813 FM signal and when he hears the the old carrier break meth ,a Here's why the General Time Seth opening. he activates the COM- they now have one-switch 411 Thomas battery -powered MAND switches (with the EBS casting to boot. Ouartzmatic is the ideal clock for FUNCTION switch in FM TEST. By the way, switching t: TV and radio stations and recording hopefully). The EBS cartridge for line through T2 causes abo fb studios. the FM station carries a 35 Hz tone to 2 db drop in line level, 25- second unnoticed with normal coin alt Instant by instant, the accuracy is re- at -18 db during the H -pad s markable. No more timing problems due silent period to disable the auto- and limiting. The to electrical failures. No more "is -that- mation "silent sensor ". the FM was necessary slot (r clock- right ?" worries. The Ouartzmatic K1 and K2 are Potter & Brum- levels are normally used on i0 is perfect for studios, control rooms, field KHPI7D11, and all audio lines than on the AM line. ,n newsrooms, offices, you name it. Other P. H. Bet. advantages: lines are brought out to patch panel jacks "just in case." so the EBS WSSViM Portable Big 12" diameter face system can be patched out in case Petersburg, le with 1 and 1/2" numbers and red -sweep second hand make it a cinch to read, of a stuck relay. even from a distance Works on 2 "C" This system works very well and Stati% batteries White or tan face, charcoal is very popular with the operators Station -to- numbers: with woodhue case. since EBS testing is simpler than Pays Better s 95 Price advantage, too! Only $59 With all its assets, it's a great bargain at $59.95. Shipping included. Send check Mark IV -T or company purchase order. Include All Wind Direction &PM local taxes. If you prefer, we'll send Weatherminder Barometric Prig C.O.D. Specify white or tan. Batteries The original weather console designed Remote Temper not included. Mail your order now to especially for radio station local program- Dept. eES at nearest service center. a complete Unit." ming. Although many have tried to copy it Also, they instruments, rF' , for the last 20 years we can and will, on , GENERALTIME SERVICE sensors, controllers, request, send you a list of hundreds radio A TALLEY INDUSTRIES COMPANY of for Sheet BW -72. :X stations that still use and prefer the Mark IV. GENERAL TIME SERVICE AKRON 819E Market SI.. OH 44305 Real professional equipment CHICAGO 206 N Michigan Ave.. IL 60601 at a modest price. DALLAS 400 S. Ervay SI , TX 75201 LOS ANGELES 5404 Wilshire Blvd .. CA 90036 NEW YORK 150 E 47 Si., NY 10017 PHILADELPHIA 1214 Walnut St_ PA 19107 Texas Electronics, Inc.

PHOENIX 3809 E. Thomas Rd . AZ 85018 QUEENS 170 -08 Jamaica Ave .. NY 11433 P. 0. Box 7225B SAN FRANCISCO 540 Mission St_ CA 94105

SEATTLE 1510 Sixth Ave . WA 98101 Dallas, TX 75209 (214) 631 -2490 WHEELING 599 S Wheeling. IL 60090 For More Details Circle (33) on Reply Card for More Details Circle (32) on Reply Card ENGI' Er 54 BROADCAST

www.americanradiohistory.com lhrmation Needed Burke for a fine article (despite the I)cLLed VUS). Professional iAntenna Filters Lawrence P. Kenney WZRD are seeking any information ptg to FM antenna filters such caties or helical resonators, the rpe of which is to antenuate Video History r wn FM carrier enough, at Part 2 of the "Videotape Re- or greater, in ¡AO dB order to corder Revolution," on page 52 other FM adjacent signals -xß (May '761. shows a photograph of broadcast purposes. the inventors of the Ampex video Wwould deeply appreciate any tape recorder. oration on who or which corn - Philip Gundy. who appeared in Nlrnakes such products and that photo, left Ampex in 1961 and items may be erthese obtained. joined Cetec Corporation as Execu- raanybody help us out? tive Vice President. Cetec's broad- WHRM /WHRM -TV cast group includes Schafer Auto- ITC's 750 Series 3200 Park Road mation. Sparta Electronics. Vega Reproducer t. Wausau, Wiscónsin 54401 Electronics. CETEC Audio. and (608) 845 -1319 Jampro Antenna Company. He 1/2 Track Stereo $1150 retired last year. after 35 years in the broadcast equipment business. Fully serviceable in the equip- Thought this information would ment rack. alel Everything be helpful to readers of Joe Roi- zen's tine article which tells of the Straight -line tape threading. JIB Watch VU's present whereabouts of the original Complete access to head with E nd BE from cover to cover thaln of video tape inventors. flip -top head cover. 'h onth and have picked up a Peter K. Onnigian atleal of useful information President, Professional +8 dBm output to is pages -both from the Jampro Antenna Company with 10 dB headroom. ice and from the information Safe tape handling provided n led by station engineers with differential braking. ..s!he country. / et te June '76 issue, 1 was ex- Xmtr Help Needed Optional motion sensing start m: pleased to see the article by am interested in contacting memory. .usfurkc "Facility Construction station engineers who have had ITC's two year warranty. ma. Proceed With Caution." experience in operation of RCA -3B e oint he brought out very FM transmitters. Of special interest or was the need for cable is experience in converting or ,,ii,s, cable labeling and docu- modernizing such units. ction. In addition to engineer- I am also interested in obtaining ': irk at WZRD. I am also catalog sheets and /or operating foible for the planning and manuals for such transmitters.

.Utng of all audio and video Recently 1 came upon a station -let on our, university campus where an engineer had cut an *h t'roni the basic PA system antenna to frequency, a Collins avetevision facilities. In the six unit. I believe. It may be of interest 'rshat I have had this job I to some engineers to read an article w nphasized the use of labeling about such FM antenna conver- .d:umcntation, and it has paid sions, procedures. planning and &Alnumerous occasions. You'd problems involved, etc. PMlrised at how difficult it is to 1 have enjoyed your magazine For more information contact .117b sonie people of the value since its first issue in 1959 and still your automation company or eUiextra work, however. Many have most of the issues. I need a all ITC collect at 309 -828 -1381. 1111.1! it's a waste of time. few issues to complete my file and - was one thing in the article have a few extra copies of back If1TERf1ATIOf1AL P4 ithered nie. Did you notice issues for trade for those I need. console VU meters in the Would like to hear from anyone TAPETROf1ICS on page 43 are pinned? who has a complete file or would CORPORATIOfI students here at WZRD care to trade or sell some issues 1 .tick to point this out to me. before 1964. 2425 S. Main; Bloomington, Illinois -rsure it didn't go unnoticed Harold A. Jahnke Marketed exclusively in Canada by Ire either. 421 Central Avenue E. McCurdy Radio Industries, Ltd., Toronto hanks go to BE and Mr. Hampton, Iowa 50441 : 1975 by ITC For More Details Circle (34) on Reply Card `1976 5

www.americanradiohistory.com PROTECTION ASSURED AGAINST PEOPLD 111 a LIGHTNING Paul Richard, chairman of the Board of Dí 1049 Stations Use of Thomson -CSF, died June 7. Vice Chairmt President Jean Pierre Bouyssonnie moves to The Wilkinson man of the Board and President, Michel became President of Thomson -Brandt ani Line Surge Chairman of Thomson -CSF, Jean -Marie Fou named to replace Paul Richard as member tie Board. Protector Ampex Corporation announces the appoirag of Richard Sirinsky as National Marketing Mng IT REALLY WORKS! for its audio -video systems division, and Chae) Steinberg as Vice President of audio -video sat and data products. George W. Hamilton has been assigned Al position of Manager of International Sali P.O. Box 738 M[IiL01 ministration for the Broadcast Products Divi ELECTRONICS, INC. Trainer, Pa. 19013 (215)497 -5100 Harris Corporation. He is reporting to J Delisso, Director of International Sales. Newest members of the National Assoc For More Details Circle (35) on Reply Card Broadcasters Board of Directors are Don Thurston, President -General Manager. 14141 North Adams. Mass.. as Chairman, and Dodd Jones, President, PSB Radio Group, Fond c a Wis.. Vice Chairman...Richard President of LPB Inc., announces the appoirrp Self Testing of Harry N. Larkin to the post of Mat Director. Silicon Rectifiers For the third time in 57 years, RCA Corp) elected the same person to hold the positrt>'1 President and Chairman of the Board. Antlaf Replace Directly Conrad...Robert N. Hurst has been appointecr: staff of the RCA Broadcast Systems training tlItn Mercury Vapor ment. Felix D. Bonvouloir is now serving as the MO Tubes Regional Manager of Broadcast Sales forlrll national Video Corporation. He is headquartetip * Self Testing - A neon indicator for Glenview, Ill....William E. Beard has been ariti each diode warns of failure. by MICROTIME as Central Regional Manag " * Direct replacements available for all offices in Minneapolis, Minn. ln diode rectifiers - no rewiring After 40 years with Eastman Kodak. necessary. Phillips, a Vice President and General Mane. the company's marketing division. is announ0 * Repairable any component can - be plans to retire. Anthony Frothingham, an Ai" replaced easily. Vice President and Assistant General Mae- * 200% Safety Margin on Voltage - the marketing division, is succeeding PhIW 300%. on Current. General Manager. * Fully Guaranteed. CCA Electronics Corporation announ' following appointments: Bruce D. Buck a President International Sales and Edwrd ' Lauman as Field Manager, Saudi Arabia I`' P.O. Box 738 ...Elven Harvey, Jr. is the new Vice PrestIl ELECTRONICS,J2 INC.Trainer, Pa. 19013 Dyma Engineering and has been elected ' (215)497 -5100 Board of Directors. Jarrell C. Lester is a new member of the )"' Regional Sales staff of Video Tape Divislo Photo Film U.S.A., Inc....Audiotronics Comt''

For More Details Circle (36) on Reply Card 56 BROADCAST ENGINE'

www.americanradiohistory.com AUGUST, 1976 came enaneeRinG

www.americanradiohistory.com Is Docket 20508 Really "Unsound

Staff members of the Cable Tele- capacity. the development of alter- withdraw from negotiation'. 1- vision Information Center termed native uses and special services will operator and municipaliti "unsound" the provisions of the never flourish. for the regulatory leave this area to the influe,; FCC's access and channel capacity and economic constraints which the marketplace. A munic a decision (Docket 20508), which apply to broadcasting will also which "is permitted to not require a cable system to provide a become the dominant considera- with an operator for a pac)ge composite access channel only tions in cable. Without capacity, broadband communication t where there is sufficient activated access is impossible." vices" should not be "prcb^ capacity and proof of demand. as In its "zeal" to relieve the from requesting the installaon well as the Commission's failure to financial burdens of cable opera- converters to ensure deliveretm require converters to meet access tors. the Commission has "ironi- city that it deems to be suffierr obligations. cally" shifted the burden "to those

In a Petition for Reconsideration who were to be the beneficiaries of The Cable Television Infoi & tiled June 21, Sheila Mahony, the the Commission's access and capa- Center, a part of The center's Executive Director. and city requirements." noted the staff Institute is a private. no four other staff members said that members. advisory group which assist these newly adopted rules repre- As for the Commission's decision governments in the develop* sented "a fundamental reversal of not to require converters, the staff cable television in the pube long standing FCC policy of en- said that the Commission should terest. couraging surplus channel capacity" as a means of fostering cable's Commission Hits Franchise Fees growth. This decision by the FCC replaces the rules adopted in 1972 The Commission has amended In that proceeding the ( which would have required major its cable television rules to indicate sion determined that "some

market cable systems to provide that, to the extent any franchise fee most significant delays" in : four access channels and 20 chan- is above three percent of the sing certificate of compliancay! nel capacity by 1977. franchisee's gross subscriber reve- cations occurred when frac In their petition. the center staff nues per year, and a waiver request were submitted that do not On members urged the Commission to for a higher fee is denied, the with the rules. adopt a policy which leaves the excess fee will be considered void. The Commission thet determination of delivered channel On August 13. 1975, the Com- changed its processing prc.'dt capacity to negotiations between mission proposed changing the so that certificate applicatits, cable operators and the franchising wording of Section 76.31(b) of its no longer held pending renvoi authority without Commission re- rules so that applications for certi- the inconsistent franchise pries view. The staff also called for the ficates of compliance containing by the franchising authority requirement that large systems franchise fees inconsistent with the Instead, certificates are sst (over 3500 subscribers) provide at rules might be processed with less but the violative provisks, least one composite access channel. unnecessary delay. "considered null and void,>'at subject to a waiver based upon a (Section 76.31(b) specifies that been preempted by federal eili demonstration of financial hardship franchise fees imposed on cable tion." The Commission sai ti by the operator. They also sug- television system operators should ever. that due to the work: gested that medium-sized systems not exceed three to five percent of Section 76.31(b), it was iv (1000 -3000 subscribers) with ade- gross subscriber revenues per year whether it could void inccsiit quate capacity be required to make from cable television operations in fees. It initiated the ruloot one composite access channel avail- the community. If a franchise fee proceeding to change tha able with the modulation equip- exceeds 3 percent, the cable system language to allow for tits ment necessary to permit trans- will not receive certification until application of processing" mission of the signal. the reasonableness of the fee is dures. In urging the Commission to approved by the FCC.) 1t.t reconsider its decision, the staff That proposal resulted from a The Commission pointed members said that this reversal in Commission report and order in the proposed change will OW Commission policy which limits Docket 20272 in which the Com- to treat as "null and voi. cable's capacity "subverts the basic mission addressed the problem of franchise fee to the ant value of cable to the national duplicative and excessive over -regu- violates the limit imposed ï'á communications system." The staff lation of the cable television in- tion 76.31(b) of the rules 141 noted. "Without excess channel dustry. which a waiver is not obtairj'

CE -2 BROADCAST ENGII0

www.americanradiohistory.com áa arts Continue To Hold some inventions ,eater Stage On Cable SAVE you TIME,

Ft Federal Broadcasting Company has signed h additional CATV systems to air its Sports - WORK &MONEY ,r 70 hour per week package. This brings the 'limber of cable systems airing the FBC ;k;e to 40 and the number of subscribers

systems include Hawkeye Cablevision (Des , Iowa); TV Systems Inc. (Honolulu, Hawaii); 'es Communications (Appleton -Beloit, Wis- wan r l; Warner Cable (Oshkosh, Wisconsin); C -K Kenova, West Virginia); CableCom General THIS ONE DOES ALL THREE Oklahoma); First Illinois Cable TV (Spring - Color sub -carrier burst phase requires close attention d.11inois); and Texarkana TV Cable Company to prevent visible color faults (objectionable hue Ricana. Texas). shifts) during a production or duping. Especially if you want to keep normal fleshtones when using n meeting of earth station vendors; antenna special effects, supers and chroma key during color I ceiver manufacturers and representatives of productions. Phase shifts greeter than 5 degrees can wle television industry. a unified approach to distort normal fleshtones creating visible color faults. deral Communications Commission for ap- This can result from mis- adjusted video equipment or vcof small- diameter satellite earth stations was from various cable lengths and amplifiers which create et upon. delays and different burst angles according to their in a video Phase h conference, attended by representatives of location color system. shifts could also result from normal rehan 20 firms with an interest in satellite aging of various components throughout the video system. You can check for t,tr.nications, was initiated and hosted by Home phase shift the old way or the VACc way. "'c ffrce, the national pay TV network, at its darters in New York. r 7 ticipants in the day -long meeting agreed to at a technical approach to FCC approval of the dearth stations. Present FCC policy requires 1Meceive stations to have a minimum diameter eters (29.5 ft.). tending to Home Box Office Engineering phase shift checked .or Robert Tenten, it appears that television the old way Mission -as opposed to other satellite trans - an services -will tolerate higher adjacent v r k interference levels. Ill '/' h would make possible smaller. less costly ,v\\V\\\\\ Iheceive -only antennas for television reception, i K requiring a change in the FCC's present tc!on the spacing of satellites in orbit. The phase shift checked aiseparation policy originally led to the stipula- the VACc way ta 9- meter -or- larger earth receive station. VACC's Burst Phase Meter (model BPM -1) is a $437.50 cynical papers showing the acceptability of the replacement for most vectorscope applications. The unit tllarth station were assigned to representatives requires only ac power, video and subcarrier inputs. An phase in the oal companies. Tenten said a follow -up meet - easy -to -read analog meter indicates shift relative to the subcarrier over a full 180 weview these papers is now being scheduled. video burst range with 1/2 degree accuracy. (360 degrees ieointed out that while the FCC has permitted degree phase range can be obtained with a coax delay line). u of small earth stations for experimental and xtal services" applications, the goal of the NEW! You saw it H -Phase Meter fence was to achieve FCC approval for normal, at NAB.. now avail- Option 02. includes Burst Phase -May operational use of the small stations in able for immediate and H- Phase...all in one unit! V7smissions. delivery. $638.00 list in the lull technical package is completed, it I made available for filing with the FCC by VIDEO AIDS corporation rois interested in installing a small -diameter of colorado

nation. VAL: In addition, HBO plans a filing on its phone (303) 667 -3301 'halt tor installation of such a station to serve .trio location in Manhattan. 112 West 4th Street, Loveland, Colorado 80537 Continued on CE -4

For More Details Circle (121) on Reply Card 411976 CE-3

www.americanradiohistory.com It also found that CCT has made If the fee exceeds 3 percent c. -

FCC Approves the special showing required to revenues, the cable system w r justify cable operators in the state receive FCC certification un NY Cable Law paying in excess of 3 percent of reasonableness of the fee , their total gross subscriber revenues proved on showings by the The Commission has ruled that when the state fee is combined with chisee that it will not intereet Section 817 of the New York an applicable municipal fee. the effectuation of federal :,,I! Executive Law is consistent with However, it found that insofar as tory goals, and by the frant¡,t FCC rules insofar as it permits the the state fee, when combined with a authority that it is appropri state's Commission on Cable Tele- applicable grandfathered municipal light of planned local regl vision (CCT) to allocate and collect fee. exceeds 5 percent total gross goals.) its operating expense by assessing a subscriber revenues of a cable CCT noted that Article 28F fee of up to 2 percent of "gross system. Section 817 was not con- New York Executive Law, e.cp annual receipts" among the various sistent with FCC rules. May 24, 1972, provides a owl cable systems in the state. The action was in response to a hensive state regulatory pt;re petition by CCT for Commission applicable to cable televisic STOP GROUND -LOOP HUM! advice on whether its system of tems and for the establishnnl assessment of its operating expenses the CCT charges with the actifd on New York cable systems was tration of the regulatory protml consistent with the FCC franchise It said Section 817 of Art fee limitations contained in Section established a procedure by 76.31(b) of the rules. CCT's costs and expenses, Itt (That section states that a fran- are defrayed in the first ilia chise fee shall be reasonable (in the out of the state treasury, range of 3 -5 percent of the fran- imbursed by the cable tel;,;_ chisee's gross subscriber revenues industry in proportion to a ttrq per year from cable television nÿ s gross receipts, not to emad operations in the community, in- percent of a company's gross tel cluding all forms of consideration, al receipts for the 12 month en such as initial lump sum payments). designated by CCT.

For Sports Continued from CE -3 It was noted by HBO Senior Vice Presidentan. Better Heyworth, that the acceptance of a smal ri station by the FCC, would bring the cost of stallations within the reach of many smal c s: Results television firms which cannot afford the Ilna stations now being installed at a total Isl $70.000 to $100,000. Use The FCC has proposed comprehensive legali prohibiting the dissemination of obscene or iie.' Reader material by radio communication and cableel& sion. The FCC said its action was necessary becl' Service recent court decisions in the First Amendme di VIDEO HUM STOP COIL and technological advances in the commun t!>t HSC 1 industry that out dated existing statutes. If t. P Will ELIMINATE HUM and other INTERFERENCE Card it* In Video Lines caused by differences in Ground by the Congress, the proposed legislation Potential amend the Communications Act of 1934 to Ii For Color and Black and White. In FLAT -DC to 6.5 MHz. a criminal offense for any person to dissric No Low -Freq. or Hi -Freq. Roll -off. obscene or indecent material by means ono. No Differential Phase Distortion. th F No Differential Gain Distortion. The communication or cable television, and No Envelope Delay, would be empowered to impose various adtni' Passive Device - Failure Free -Low Price. Small Compact Package 4v 4 s 2 -114". tive sanctions for such dissemination. Back . ELIMINATES HUM AND INTERFERENCE: The term "obscene" is defined in keepit IN STUDIO IN FIELD recent decisions of the Supreme Court to Imo' Between Buildings Bete Remote Truck and Telco Iskl On long runs m Buildings Bet. Remote Trucs and Mrtroeave patently offensive representation or verbal Between Studio and Transmitter For tntemrucs Hookup Of On incoming TeiCo Circuits For vTR units of sexual intercourse, masturbation, c " On Outgoing Telco Circuits Fu. Monmonrp lines tion exhibition of a human genital or excretory'r Available on 10 day tree trial This which appeals to the prurient interest of the e' applying contemporary community sttd" AUDIO -VIDEO ENGINEERING COMPANY person 65 Nancy Blvd., Merrick, N.Y. 11566 Issue and which lacks serious literary, artistic, poll- Tel. 1516) 546 -4239 scientific value.

For More Details Circle (122) on Reply Card CE-4 BROADCAST ENGIN

www.americanradiohistory.com As i newly- formed in -house advertising agency . Idiotronics Corporation, will be headed by rya R. Grindinger as Director. ¡t National Broadcasters Club announces the .ul of their June elections: President -Leonard eit.ICA; First Vice President and Treasurer - islet', Assn. of Maximum Service Telecasters; ai Vice President -Wally Briscoe, National ,hl V Assn.; and Secretary -Patty Grace, NAB. II oard members are: Tuft; Grace; Sam rsr Y, FCC; Russell Eagan, Ellis and Rowe; ral ars Marquis, Public Broadcasting Service; uce Lovett, American TV and Communica- ns 3oard members confirmed for another year re ;asley; Briscoe; Charles Macatee, WMAL, csl. gton: Warren Zwicky, Storer Broadcasting ,'gden Prestholdt, A.D. Ring & Co.; and er. Gray, NAB. t Federal Communications Commission an- on ; the appointments of four officials: Jerold L. to m°son gs co , Deputy Chief of the Cable Television CD °re w avs and se ; Roscoe E. Long, Chief of the Broadcast s or Policy and Rules Division; Philip Permut, even potvre ..T4111' iet f the Common Carrier Bureau Policy and V40-1 er, .. *Division; and J. Clay Smith, Associate °rds,P° coR,\ng .o: w cod /,.. ltíel Counsel. oons\ontte o ot istSwanson is now serving as Chief Engineer at we're oo,r ,; ¿, ` : w +\re, 9 oób\e. ' 11 in Nashville...Bob Galen has joined KARN, ee\den o ex etsuP" pt ou9h,Nrih ds.M\ke *Rock, Ark., as morning host and Chief Mao., dcsaescxó co, ,gir.r...James B. Barnes, Director of program - bot,ndd°..PIeoPP \t\c a"Éto sale ng id Development at KETC -TV, St. Louis, is wit another three year term on the Board of PNÜWet\to ndwó°dlostdecOmeBe\ , roc rs of the Adult Education Council of Greater No\\ot` t\ o\\oU\\i` e ee\d óo tses^ L is. den \ us\todyo9^GetodóV gox1. Pet Sieler joined KEVN -TV /KIVV -TV, Rapid C 34 gbb i% Dak., as Station Manager...Marvin Young, 1hr ,9o^\c ttt¿ÓMe' E\e p\\or` ngineer, WSVL, Shelbyville, Ind., died June d 434.P r9Y Rchqfs J Í ene 41 a brief illness. Young, 53, had been with .w Li reCtl on since it began broadcasting in 1961 and 006 Craw Chief Engineer in 1964. Pappas is now working as President of Big Broadcasting, owner of KTRB Radio and Radio, Modesto, Cal....Mike Pappas has rr med President of KMUV -TV, Sacramento. am Pappas is the new President of Pappas ', on Inc., owner of KMPH -TV, Tulare - '+1 Cal. .as Santos is operating as General Manager of c. Radio and KBOS Radio, Tulare. Cal.... Acevedo now occupies the position of "e Sales Manager of KGEN Radio and KBOS .k' _ularc, Cal. hr radio station executives. Jerry Fitch, Elliott ea1,, and William F. O'Shaughnessy, have been " d to the Radio information Office Com- 'st f the NAB. r. interested in CATV will want to note that I Iarris has been elected chairman of the Na- able Television Association.

For More Details Circle (37) on Reply Card 57

www.americanradiohistory.com How To Massage Cueing up records and an ing for the FM programs . The Message simultaneously listening to t I have been enjoying your "Blue mote for commercial cues From Bananas" in addition to the other cueing those up on ET's) ke excellent articles, and I thought this quite busy. But at least the may be of interest. history announcements were BWE KRBB -AM and KRBB -FM have on the tapes, so I didn't h a program every hour called "Com- worry about them. as long. munity Events" which feature news could see the Ampex turning BANANAS about civic clubs, church revivals. Halfway through. though. I,, etc. Recently, we received a letter phone call: "I'm just a fresu asking that we announce a revival mind you. but...isn't the ta: at one of the local churches with a backwards ? ". It was. to closing statement informing us that Another time, good trainin pa MASSAGES would be brought to off in keeping a bright blue Mat all by Rev. off the air. Had the static n SAG TAILS Luckily, we never read anything warned me to keep my eyetlla "cold" on the air. few words ahead of my moh I hope this brings a chuckle to our rip- and -read newscasts, l'ha all of your rea ders. broadcast this little gem rig Paul S. Demaree the UPI wire: "Said one witrs Former Father General Manager the crash, 'It was terrible!Fit Makes The News KRBB there was this awful noise to Sallisaw, Oklahoma everyone was running alun Our mini crew of five manage to creaming !" put on a five- minute TV newscast Ivan Er at 7:25 for the early morning San Electronics & Photoglpk Diego viewer. Our announcer often Epat Drawkcab? Popular Mechanics Maui suffers the "marble mouth" syn- You Knew It Could drome at that hour and all in one show spewed forth with: And It Did "...and we'll have a live report In my last week of college radio, from the tire by our fume crew." at WYBC. New Haven, I found my- "And from the state capitol, our self alone in the studio for several Sacremento reporter talked to Gov- hours running three independent ernor Junior Brown." (He's Gov. programs: While our FM channel Brown. Jr., of course.) carried our regular, Sunday classi- And concluded with another story cal -music schedule, one of our regarding former Governor Brown, carrier -current AM channels carried Sr. which came out "Governor two remotes, back -to -back (one Brown's former Father." each from the chapel and the And that's the news at this hour. stadium), while our other carrier - Mary Zoller current AM channel carried a re- Video Engineer view of all the listening assignments "The opinions expressed by t weatherman are his own and r KCST TV for History 10. whose of Music final necessarily those of this stabo[ San Diego, California exam was the next day.

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RECORTEC, II\JC . 777 PALOMAR AVE SUNNYVALE. CA 94086 TEL: (408) 735 -8821 TWX.9103313'

For More Details Circle (41) on Reply Card 58 BROADCAST ENGIN

www.americanradiohistory.com run, detrimental to that same employer. If....the relative happens to ìZoom in! have the same (or better) qualifica- tions than the stranger....no problem....at least not now apparent. What do YOU think? Send us your views. sk 1... "A Letter From Andy" lryeical of the many letters Take 2...Do You Want !deed at the ASTVC office in NY To Be A Producer? ht one from a young hopeful we We are holding auditions. The tray only as "Andy ". Andy ASTV is thinking seriously of pro- t. inquiring as to how he may ducing its own "in- house" docu- lx" the market....get a foot in mentary. We will script, cast, shoot. ar....or more explicitly....get a edit and then peddle it....Well, b l one of the major nets in New maybe not peddle....but certainly trCity, sometimes referred to as plug it and aim to make it available Wig Apple ". for distribution. !ply assures us that although The idea was first presented at a Trained in all areas of TV meeting at the West Point chapter past operations, he will be back in May. The thinking was: on than happy to start "any - We certainly have the talent in the lie at all" for almost any Society. The equipment can be ...All he wants now is a made available. So, why not? Itnct "....who does he have to Although there is no agreed -on -t? ny help or advice we can give subject as of now, we had toyed ill be deeply appreciated.... with the idea of something tied -in do you answer "Andy"?.... with the Bi- Centennial. Inasmuch might start by telling him as we have chapters or members here is no set answer. You from Boston down to Washington, Iso tell him that the various and this entire region is rich in the representing the Tech Ops history of the founding of this The biggest advance of audio at the nets, do not do nation, we might exploit this po- three control in the last 15 years. g. They may refer people tential. But, as we said, we have not :proper management people made a decision yet. We now ask Totally DC controlled for noiseless nets, but that's about our membership to get involved. switching and audio mixing. Lighted touch pad switching eliminates mechan- there on, it's up to the Send us your ideas as to what you ical noise and breakdown. Advanced cal to sell himself. Now - think would be a suitable or ap- solid state light emitting "VU" meters. most people who "make it" propriate theme for an ASTVC Cermet mixers and level controls for VR's (vacation reliefs). package. AND....if you would like years of trouble free operation. Plug pre VR's for several summers to play a part in that production, in amplifier cards. Full range input gain select from mic thru high level. All finally becoming permanent, please so advise in your letter. inputs and outputs balanced. Distor- piling out. At least, as far Direct all mail concerning the tion - 0/3 %; Response - +0, -2 db, particular net is concerned. above to: Mr. Tom Jocelyn, 20 Hz - 20 KHz; Noise - -65 db (mic it help to know someone? It ASTVC, Box 296, Sparkill, NY inputs). Flexibility? Complete comple- hurt....Not only doesn't it 10976. ment of accessories for input expansion, equalization, remote control, etc. ut in too many cases it is the Ire way of "making it "....It is 10 day free trial and 2 year warranty. knowledge is Take Retires that it al- 3...John Cordone Call collect or write today. You'll find iNmbarrassing to find the high He is not retiring from the it both an exciting and profitable ad- Irld'ce of relatives that are being industry....only from the Board of venture! Wit onto the job. Directors of the ASTVC. Johnny, tikt is the position of the one of the ASTVC's EMMY win- Models 8 Prices SC-5M Single Channel, mono S 780 on this ?....Quite simply.... ners, has announced that he will DC-5M Dual Channel, mono $1,032 t this kind of nepotism as ob- not seek reelection to the Board DC-5MS Dual Channel, stereo $1.252 ,otble and undesirable when it this next election. Although John DC-8M Dual Channel, mono $1,390 DC-8MS Dual Channel, stereo $1.880 "individuals with little or no did not spell it out, the fact that he ,Trice over those much more has recently moved "on" to be- RAMKO RESEARCH !fenced may have and /or qualified. coming a TD at ABC 11355 Folsom Blvd. 1M because of some "relation - been a factor in his decision. Rancho Cordova, CA 95670 `V. It is degrading to the Telephone (916) 392 -2100 #y as a whole and, in the long fade to black... Slow For More Details Circle (120) on Reply Card

www.americanradiohistory.com ALL METAL FACE Commission Adopl EEO Guidelines

MONO rnñF. STEREO The FCC has adopted new equal empl rrr opportunity guidelines designed to reaffir r Commission's commitment to genuine equal apio ment opportunities, strengthen the elements AmPEY Scully ayaeOZd equal employment opportunity program, an FOR OLDER MODELS: FLUTTER BAR NON-POPPING GATE POLE PIECES vide an opportunity for self -evaluation f RECONDITIONING SPRING MODIFICATION CAPS VV/GUIDES REPLACEMENT HEADS effectiveness of such programs by broi licensees. DIRECT REPLACEMENT HEADS This action was the result of a notice of and rulemaking released on July 25, 1975. Iii MMI HEADS EQUAL OR EXCEED ORIGINAL EQUIPMENT SPECS. for comments on certain changes in the e EEO guidelines including a model EEO prr, SEND US YOUR ASSEMBLY. We will ultrasonically clean everything - install new heads if yours cannot new enforcement procedures, and raisin i be relapped - replace any worn or missing minor hard- threshold for filing a written EEO progran ware - adjust - test - ship back PRE -PAID your five or more full -time employees to more tin assembly (not some other). full -time employees. 36 HOUR SERVICE - LOANERS AVAILABLE Under the new guidelines, the Comm INSTALL YOURSELF. Buy MMI heads with corn - plete written and pictorial instructions. adopted, with minor modifications, the mode program proposed in the notice of inquir model program, which is designed to servt EQPOLIS,MAGNETIC5/NCI sample program, contains ten elements inut / V h'EAPUL MANN 5í420 sections devoted to a licensee's recruitmeniti niques and sources. training efforts, the avail of women and minorities in the applicable . force. and a job structure analysis to be sub For (39) on Reply Card More Details Circle by licensees employing 50 or more fulfil employees.

New Filing Threshold I las 'l'ije Time? 1 The Commission also amended its EEO rep provide for a new filing threshold for those stns Skotel time code readers and generators. required file written EEO programs fro High performance timekeeping for greater to present five or more full -time employees toot flexibility in programming and commercial than ten full -time employees. The Comrss( production. Models feature full user data noted that written EEO programs were of gatic facilities, high visibility LED display, low able value in the smaller broadcast stations at Ih power consumption and cool reliable oper- under the new threshold, 91,889 full -time ema\'t ation. Skotel is representing 84.9 percent of the broadcast inds' total full -time workforce would still be cover( bt written EEO program. The Commission note Ili while it requested comments on an exemptior)l ..F: I, ,..F,. NW'. state ti to 15 full -time employees, the more than tedill . threshold represented a more reasonable start;rE' The Commission affirmed its use of the (rre compatible with all other "zone of reasonableness" standard in tapir SMPTE code equipment and options plug in cases and indicated that it was in the pro.' with no special tests or tools required. Our developing a new processing standard for aet reader reads 80 bit SMPTE code from any noncontested cases which would be "more ir114 source at speeds from hand turn to 40X. with the standard used in contested cases." Self- contained character generator gives Commission also noted that it would continue)! precise, single frame accuracy. reporting requirements and conditional re'l'y where it appeared that a licensee's EEO p8f' Like to see more? We've got the time. was passive or not achieving desired results. In addition. the Commission indicated that o' require that a licensee set forth goals and time PO Box 310. Station Rosemont to "demonstrate the applicant's good faith it'll"' Montreal. Corrodo H1X 3B8 Nov to increase minority and female utilization. %.skobel (514)728 -2285

60 For More Details Circle (40) on Reply Card BROADCAST ENGINP'

www.americanradiohistory.com burg and were flown by helicopter lipnufacturer to the KRXK site. They found only ilps KRXX Back a concrete floor slab where the transmitter shack had been, but the ) The Air station's antenna tower remained standing.

, August 20, 1975, the Corn- The new transmitter was trucked released a notice of pro- to the site and the RCA engineers, ,, rulemaking in this matter with the help of National Guards- rtcreceived comments from five men. went to work installing it in a ors, all supporting the proposal. large house trailer that was to be its a plies were received. temporary home.

I the notice of proposed rule- al-1g the Commission pointed Discreet Quad n at it had received applications it instruction permits for several Stereo Network H translators from the same 'rant proposing to serve two The world's first Discrete Quad- ffr.ent communities from the rophonic Stereo Network Broadcast trt site on the same output took place July 24 in California. vaiel. Noting that this was Billed as a "Complete Sound Ex- n tsly an effort to achieve the perience," the program was aired at results which would be throughout most of Ceñtral and :heed with a multiple output Northern California. K -I01, San nlfier but at twice the cost, the Francisco. was the flagship station, omission said that in the ab- and the show involved the com- T. of valid and compelling bined efforts of EBRG. San Fran- asis, applicants should not be cisco. and KZAP and KSFM, fined in this manner. Sacramento. Sing up temporary quarters in The show was produced from mile home, KPXK, Rexburg, K -10I's custom -built four channel faFs only radio station, was able studios. K -101 broadcast two of the fume broadcasting only four four channels over its stereo signal rys,fter its transmitter shack had on 101.3 mc and the remaining two e:destroyed by flood waters channels over KBRG's signal on onthe breached Teton Dam 15 105.3 mc. The show was rebroad- Six different audio DA's designed away. lt Surprisingly, the cast over KZAP (98.5 mc) and to solve all of your distribution stirs antenna remained stand - KSFM (102.5 mc). problems. B. The program featured a variety lkponding to a request from of music and artists. It took two From our table top 1 in /6 out to our powerful 20 in /80 out. Stereo or mono Gov. Cecil D. stereo receivers to listen to i Andrus, RCA the metering, individual operation, output Ip KRXK get back on the air. experimental broadcast, so all four level controls and balanced inputs and ite tation was needed to help stations promoted to their combined outputs are just a few of the many fea- tstrg's 4,700 citizens locate listeners to have "Quadraphonic tures found in these superb DA's. Per- !pi members and friends and to Parties " -invite a friend with an- formance? Response - 10 Hz - 20 KHz ±0.5 db; Dist. 0.1 %; Output level fuicast emergency rescue and other stereo system. - lkilitation - +20 dbm max; Signal/Noise - -90 messages in the db; Channel separation - 80 db. Qual- Ain area. ity? All RAMKO products are backed Pt notified their transmitter Commission by our 10 day free trial and 2 year war- Immuring plant in Meadow Amends Rules ranty. They have to be good to do that. *4 Pa.. near Pittsburgh. and a Call collect or write today! if- owatt AM transmitter was The Commission has amended its Models & Prices ked out and packed for air rules to allow UHF television DA -6 /E 1x6 (table lop) S 145 ';pt.nt. translator stations to use multiple DA -6R/E 1x6 (rack) S 165 O'the following day, June 12, output amplifiers. Only UHF trans- DA -6BR /E 1x6 (rack, indiv. cont.) . S 179 DA -6RS /E 2x12 (rack) S 239 0 200 -pound was with 100 watts or less power transmitter lators DA- 16BR/E 2x16 (rack, meter, etc.) . . S 299 to board a National Guard that are not operating on channels DA -2080 up to 20x60 (rack) . . . $325 - $1,675 i6Tt that had been dispatched to listed in the FCC's Television Table ' ird base adjoining the Pitts - of Assignments will be eligible to RAMKO RESEARCH 7K Airport. use these amplifiers. 11355 Folsom Blvd. nwhile, transmitter special - Under the former rules, use of Rancho Cordova, CA 95670 .m RCA Broadcast Systems multiple output amplifiers was Telephone (916) 392 -2100 iden, N.J., arrived in Rex- limited to VHF translator stations.

For More Details Circle (02) on Reply Card 'ry 1976 61

www.americanradiohistory.com in relative values, the exact levels 1 Quality Control maximum output witha k are not critical, but, care must be level input then adding an ex,; r Continued from page 44 taken to assure that the recorder dB of bias results in lowest (,I A Word About used to generate the test tape is in tion. If the tape deck has gal Standards perfect alignment. distortion adjustment, u:gi Since there are no sweep fre- Start out by adjusting your marked linearity, the next stel quency and low distortion test tapes mastering deck for as perfect repro- adjust it for minimum thirdhd of the type described here available duction of a standard NAB align- monic, which is the type of (, from test tape manufacturers, they ment tape as possible. Most decks tion inherent in magnetic must be made by the broadcaster. can be made flat within a dB from systems. Any second harmoni

This is not a difficult task, and very 50 to 15,000 Hz. Next, adjust the you see is most likely due I lb good tapes can be made on any bias for lowest distortion reproduc- electronics. professional quality tape deck. tion of a 0 level input signal. With After the bias has been sc r( Since the spectrum analyzer deals most decks, adjusting the bias for record equalization and azi( should be adjusted for the trod possible record /play response.* most decks, it is possible to g if alignment close enough to dins a standard NAB tape within dl Now the 90 second sweep tontot the tracking generator can t corded with good accuracy % found the Scully 280 that wrusl to make the prototype tape, ,ors perfectly flat up to 17 kHz. The distortion test tones ,a be recorded at full level. I ml take a little more drive at tl k and high end to come upwi

exactly the same output le I low, mid and high, but once zai the exact level is not really r tit since on the screen we will btoi ing for the difference betwe 1 fundamental and it's harniu and not the absolute val: either. If the results are to be recde a scope camera, such as thont pensive Polaroid, can save a)li time. The photos for this lit were taken from the face of r tronix storage display in ash series mainframe, which al Specifically designed cepts SL4N spectrum analyz a a preamp. The photos can b fd for automated systems as an ongoing record of thew' mation system's audio perfori P Otani, Japan's leading producer of head assembly for minimum RFI making it easy to spot slow CO professional recorders, announces and improved S /N; 25 Hz optional cF the ARS -1000 Automated Radio sensor; improved low frequency ration before it begins tr Station Reproducer. This new response for reliable 25 Hz sensing; listeners. machine is based on the successful +4dB 600 ohm output; improved As the trend toward saki MX -5050 professional recorder, flutter performance; plug -in boards engineering staffs continues with several components modified with gold -plated contacts; nation- readers may ponder how a do to meet the special needs of the wide parts and service from Otani below one is possible), so als dt automated broadcaster for MX -5050 service centers (mech - the sophistication of autoal consistent quality and greater anical parts are interchangeable); formats, which often (e4 reliability under heavy duty one year parts and labor warranty. radio is e continuous operating conditions. If you're considering automa- more tape sources. What li Compare these features: tion, ask your automated system amounts to is more work f 2500 hours MTBF; 71/2 or 3 3/4 ips; supplier for full details on the ARS- people. Less people with bed" front switchable speeds; preamp in 1000 or call Otani. methods can keep quality c even years of routine ski Otani Corporation if wall 981 Industrial Road never detects a defect, San Carlos, California 94070 like to bet the success Of (415) 593 -1648 TWX 910- 376 -4890 station on it?

For More Details Circle (43) on Reply Card 62 BROADCAST ENGIN6f

www.americanradiohistory.com ,I000cTs

Hand -held ENG Camera A versatile, "take -it- anywhere" anheld camera for professional my video productions is now :atble from the Broadcast ailment Division of Philips ll Video Systems Corp. Known r Philips LDK -11, the camera Features: is any design features for a wide rig of on -site television assign - Self contained video sweep er., such as electronic news generator with internal or external ;firing, local station commercial sync and blanking. sections, documentaries and Wide sweep range. variable up to C eel events. 10- 0 -20MHz or 20-0- 10MHz. Fr flexibility, the LDK -11 may Excellent linearity. ther battery or AC powered. Variable sweep rates from system design permits opera- 20 sec. to 1/60 sec. Fixed rates at power line I the camera either a fully A. Modulated sweep. non -comp s as and video field (locked) frequencies. 2- 0- 20MHz. marker blanking 5MHz rrntained portable unit, or as a intervals. variable stop markers at Manual sweep. 7 5 and 17 5MHz blconnected, remote -controlled B. Composite video sweep. 2- 0- 20MHz

range 1 lsa when integrated with addi- Sweep set by separate start marker blanking at MHz intervals frequency and finish frequency C. Detected non -comp sweep variable to cameras in a multi -unit controls. Sweep reversible. stop markers at 7 5 and 17 5MHz td. D. Marker pulses output. 1 MHz field pickup. intervals 15MHz intervals evident) rti(tpactly constructed, the Built in frequency readout. switchable to show start. finish. )K 1 camera head with lens variable marker and sweep output fig only 15 pounds. It contains frequencies. rtt2 /3 -inch Plumbicon pickup be and integral bias light to Comprehensive marker facilities. 'niize lag at low light levels. Fixed markers at 1 MHz and 5MHz Other Advanced intervals, color and aural subcarrier egenting pickup quality is a Datatek Products: teed beam frequencies. Two continuously splitting prism markers. External Transmitter Phase ticiprovides variable stop high quality pictures marker input. Equalizers and !n)tible in colorimetry with Waveform Correctors idicameras. For added operat- Symmetrical marker blanking in Differential Phase & sweep output. marker pulse t rtciency, it is equipped with Separate Gain Measuring Sets output. t °Rtic white balance and auto - Envelope Delay 'rirris. Internal or external sweep Measuring Sets modulation. for applications including Video Waveform Mere Details Circle (80) on Reply Card envelope delay measurement. Equalizers detected amplitude displays. etc. Video -Audio Routing Switchers Conveniently small unit, with signal 1 AM Modulation facilities for either front or Video, Audio connector & Pulse D.A.s Monitor rear access. ew AM broadband modula- P tonitor that measures up to (!%'positive peak modulation of Í4 roacicast transmitters has Kntroduced by Time and Fre- DATATE K d Technology, Inc. CORP.. fattl the Model 753, the new *Ilion monitor has an internal 1166 W. CHESTNUT STREET, UNION, N.J. 07083 Continued on page 64 (201) 964' -3656 190, 1976 For More Details Circle (44) on Reply Card

www.americanradiohistory.com ity

Products By adding the Model 754 RF able. By adding external 10. New Preselector, broadcast stations, con- detecting circuitry, it is fully p. Continued from page 63 sultants, and regulatory agencies able for Automatic Broa.: noise level of better than -75dB, can tune in any one of the AM Transmission System (ATS) ,f; distortion of 0.15% at 99% modula- broadcast stations and precisely cations.

tion and audio frequency response monitor its modulation and fre- For More Details Circle (81) on Reply C of f2 %. Built -in meter attenuator quency off-the -air. A low cost is provided for proof-of- perform- tunable frequency- synthesized RF Transmitter ance measurements. Linear phase preselector is also available for off - Conversion Kit is zero monitoring. filter design used to achieve the-air modulation Wilkinson Electronics anncr for wave modu- carrier power level overshoot square Optional a kit to convert the RCA Bi RF carrier. The Model 753 is absence -of- modulation lated alarm, BTA5H, BTAIOG and BT11 FCC type approved for AM broad- alarm, off -frequency alarm and AM Broadcast Transmitters p cast monitoring. over modulation alarm are avail- Thyratron high voltage powers, plies to solid state power sull These kits are adaptable ttx figurations, including cutbac You Have a Right mote power change or mi power change. To Expect More from Scully's For More Details Circle (82) on Reply C Family of Recorders. Audio Attentuators A new line of audio attenit is available from Modular w Products, Inc., a unit of Mai Devices. Inc. of Bohemia.h York. The new models. 8160 -Mori 8260- Stereo (2 -gang) and it Quad (4- gang); utilize a pry'

conductive plastic resistance r ment in a 600 ohm con. impedance ladder network cc'.; ration in conjunction with nu finger precious metal wipin)c tacts. The mirror -finish elee are rated in the millions of cy.! operation. Resolution is infinite, and e ing accuracy is within f0. Maximum attenuation is 't than 95 dB. with interchi isolation in multi -gang units f'l than 80 dB. All three models are howi And look what you get with Scully's For multi -channel application, Scully the same standard size case lu 280B/284B series. One to four has the 284B-8, one inch 8 -track ing a black anodized alum tracks. Plus these important features: master recorder with DC servo and faceplate with a permanent ri, 14 " reels. You'll solve a lot of epoxy scale, calibrated in Optional DC capstan servo recording problems at once with the attenuation. A slide type in knob is provided. Dimension versatile Scully family If Motion direction sensing logic 11/2" wide x 7" high x 3'h" Sales, service and replacement parts External connections are ma. Innovative low -noise electronics are available from over 200 world- a P.C. connector furnished" wide distributors. each unit. Functionally illuminated controls Available as an option. Get the facts. Write,Telex or phone: internal SPDT microswitch Optional 14 "reel capability provides both normally opei ®Scully I Metrotech normally closed contacts, andl Division of Dictaphone ates at the bottom of the l' Reproduce -only version (285B) 475 Ellis Street travel (infinity position) for I' Mountain View, California 94043 cast CUE, channel ON/OF Variable speed accessory with (415) 968-8389 TLX 34 -5524 desired functions. S..I1..ne M.,,.,..h.,. n.rw.M1.d Dl.,.phu cwwmwn M-. Mw Yu,4 other L.E.D. speed read -out C For More Details Circle (83) on Reply

For More Details Circle (45) on Reply Card 64 BROADCAST ENGINE

www.americanradiohistory.com tccilloscope Measurements Instruction Book Now is the time tomprehensive book in instruc-

I format entitled "Zeroing in fines and Zeros" was announced to bur Harris' éllips Test & Measuring In- ' tents, Inc., a North American Company.

I itten for Philips technical Circularly Polarized el around the world, the provides theory and oper- tl information on oscilloscope Television Antenna. d digital measurements. The : is divided into six parts: asic Oscilloscope Principles. dditional Functions, Princi- d Operating Information. easurement Considerations The new Harris CBR (cavity areas are improved. And the finitions. backed radiator) CP antenna extremely wide bandwidth cilloscope Probes. is developed, pattern tested inherent in the Harris design for CP and horizontal radiation, permits multiplexing )igital Features and Versions. of any and ready to go. two or more stations in the VHF easurement Examples in You can install it today and high band channels. I and Computer Applications. radiate a horizontal pattern. For complete information ng with a basic oscilloscope Then, when approval comes about the Harris circularly Land operation discussion, the from the FCC, you're ready polarized TV antenna that's ' progresses through multi - for circular polarization, with "slightly ahead of its time ", triggering, differential modes minor field modifications. write Harris Corporation, rid elayed timebase operation. The Harris CP antenna Broadcast Products Division, ntmeasurements in pulse appli- offers the very finest in signal Quincy, Illinois 62301. ills are discussed, including transmission, with significant to idth and risetime considera- reduction of ghosting effects in problem areas. HARRIS In addition, COMMUNICATIONS ANO signal -to -noise ratios in fringe INFORMATION HANDLING 011oscope probes with active W id Iassive devices included are sc,sed with their relationship td se in pulse measurements. s digital features, such as ly delayed sweep, word - izers, TTL triggering and are also described. M surement examples in digital 'd rmputer applications are also 'med.

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CW Klystron Amplifiers introduces two five -cavity, oled klystrons for use as plitier tubes in both visual al sections of UHF -TV ers. VA -953H and VA -954H gain of at least 47 dB, r'kW peak -of -sync output with Irein 0.7 W of rf drive, up to 42 t efficiency at peak -of -sync and one dB is at least 7 er the tuning range. information, write: Varian. Microwave Tube Division. ansen Way. Palo Alto. CA

Deuils Circle (15) on Reply Card

For More Details Circle 146) on Reply Card 1976

www.americanradiohistory.com operator may time an interval in The unit measures 31/2" New Products hh ' the timing mode, flip the switch 81/2" deep x 61/2" wide and war Continued from page 65 and add or subtract a time value, 21/2 lbs. and operates from 113f then switch back to timing an 60 Hz.

Time Calculator additional interval. For More Details Circle (86) on Reply Ca a ESE has introduced its latest Since the display does not change, digital timing product. A four digit, the ES 230 can be used as a Stereo 60 minute time calculator /timer presettable timer by entering a time Generator which adds or subtracts minutes while in the calculator mode and QEI Corporation, KressonAn and seconds, and at the flip of a then switching to timer mode. Jersey 08053, has announce( d switch, can count and display The ES 230 has been used by availability of its new Stereo (net elapsed time. broadcasters to calculate time seg- ator Model 772. The Mode1TT The timing and calculating ments for programming. as well as meets or exceeds FCC requirertw modes may be mixed so that an by time study personnel. for stereo MPX transmission. The stereo signal is genius through the use of a time di. o technology to reduce the comptu of the circuit and to minimir r!

number of adjustment points I h technique passes both left andr,d signals through identical Ciro to ensure close phase and apr REMOTE tude tracking. resulting in t CONTROL mum cross talk. RECEIVER - A precision phase linear lovo.e filter is used to attenuate all* SWITCHER wanted harmonics of the 38.H switching wave. The output is high level (414 low impedance. A low imparts output of less than 300 ohn used to preclude high- freglrt attenuation of the composite no by the coaxial output cable. .1 The frequency response i! lit within 0.5 dB from 30 Hz I KHz and offers stereo separatn r greater than 40 dB across the rrr Total distortion left or rig bettern than 0.25% THD or of The unit has built -in tri1 pre- emphasis. Crosstalk from lot to subchannel and subchantl I MODEL 3000 R -10 main channel across the 11,1 band, 30 Hz to 15 KHz, is MLA 46 dB and the suppression r DOES YOUR COMPUTER KNOW WHEN A 38 KHz switching signal bettor' BALL GAME IS GOING INTO OVERTIME? 55 dB with total noise output i dB. If not, you need a system as shown above to permit your The Model 722 has spa, engineer to take control from his home or office. Switch phase equalized 15 KHz love programs from a dial -up telephone line and /or micro- input filters available with r " wave or radio link. phase relationships. This is dr. Write for complete data: ensure minimum crosstalk an ' transient distortion at all fit M MONROE ELECTRONICS, INC. cies. The QEI Model 772 is mad' 100 HOUSEL AVENUE. LYNDONVILLE. NEW YORK 14098 E standard 19" rack mount. re Area Cado 716 765 -2254 only 31/2" of' rack space and i" contained with its own I' supply. The generator circus' mounted on three circuit boar stereo generator assembly: a' and power supply assembly

For More Details Circle (47) on Reply Card 66 BROADCAST ENGINE'

www.americanradiohistory.com regulator assembly. Termi- Versions under consideration will provided to allow remote automatically switch over to back- CM has reo switching. up transmitter in case of malfunc- I. power input is 115/230 V tion or send tone -enclosed RE level replacement dingle phase, 50/60 Hz. All information over cable pair. ex controls are located on the Series 3162 is available for opera- mane] with input and output tion at all Telco communications Rrtions on the rear apron. frequencies and power levels (e.g. PARTS 2 1 l Details Circle (87) on Reply Card -512 MHz More and -500 watts), and in stock for for 12 DC or 117 volt AC supply. all For More Details Circle (88) on Reply Card i Power Drop -Oft Alarm Spotmaster N, WATTCHER® RF Power Audio -Video anrr /Alarm series 3162, by Bird Routing Switcher consoles, ironic Corporation is designed Image \ ideu Limited of Toronto, cartridge machines mon of power drop -off below a Canada announces the introduction vsI l to conform with FCC part of a new line of audio /video routing and accessories it requirements. The unit is switchers. These switchers feature NI for instance, at a Mobile ultra conservative design and ex- Franchised ,rial site to measure forward tremely low crosstalk. This product Warranty & Repair Station for Spotmaster rt, reflected power (with a has been well received in Canada inrtttary- contact front -panel by Television Broadcasters and itc, and to obtain VSWR and particularly by the Canadian Broad- tir m system data during rou- casting Corporation. a aintenance. It is then left in Image Video Switchers are mar- same day t e to feed back a signal in keted exclusively by Glentronix iprse to the transmitter being Limited. 160 Duncan Mill Road, ye indicating whether it is on Don.Mills, Ontario. M3B 1Z5. shipment tiottand with sufficient power. For More Details Circle (89) on Reply Card Via Airmail Special, Bus, United Parcel delivery dl phone 215 -937 -0607 Official Headset anytime -24 hours of the 1976 a day Olympic Games

Call CM liminate Off -Mike Problems With The Sportscaster Headset for best buys on Sportscaster headset with integral dynamic mike from Television Equipment Associates gives you complete broadcast components freedom of movement and simultaneous monitoring of two Sources. ... we're distributors for: The headset has a Scully, DBX, Revox, LPB, Dynamic boom microphone: 400 ohms, frequency range 50- 15,000 Hz. Sensitivity 2mV (loaded) for Cate!, Fidelipac, Russco, ROH, close speech. Scotch, Otani, Stanton, Telex Double headphones: independently wired, 200 ohms each 50- 15,000 Hz. Single 'phone version available. Ventilated foam cushions eliminate perspiration and let you hear ambient sound and are inter- Phone $83 00 changeable with ear -enveloping cushions. J bie UM Phone S96 00 Weight: 8 ounces. Practically unbreakable com- Communication Medias nary from stock. ponents. Optional cough switch. A Division 01 The William Challenger Corp. for literature on Broadcast Component v'tically unbreakable Televisitm Equipment Assrciaies. ¡tv -*Phones. Distributors Box 260 South Salem, N.Y. 10590 er inquiries invited. (914) 763 -8893 P.O. Box 54 /Allentown, Pa. 18105 For More Details Circle (II) on Reply Card For More Details Circle (48) on Reply Card "1976 67

www.americanradiohistory.com New Products Continued from page 67 as many as 3200 edited scenes. It both time code and real lang can interface with up to eight on- This feature permits the of

line or off -line video, audio, or disc to call up a particular scene r Videotape recorders. real language tag without hat, Editing System The EDM -1 was demonstrated cross reference the scene d A new videotape editing system for the first time at the National tion with a set of numbers. capable of performing more artistic Association of Broadcasters conven- With the optional file m special effects and storing edit deci- tion in Chicago March 21 -24. ment system, the EDM -1 ca sions has been introduced by Unlike present computer editing save time by reducing the an Ampex Corporation. systems which store and recall of tape shuttling required Or The Ampex EDM -1 editing sys- scenes by digital time code address, scenes are recorded in rat tem features a computer -controlled the EDM -1 has an exclusive corn - order on master tapes. switcher with special effects and a puter filing system that permits The EDM -1 remembers h floppy disc memory which can store individual scenes to be identified by each scene is recorded o master tape and calculates thn, efficient way to assemble thet a the least amount of shuttling: scene is then transferred to tl : What's SO special cise location required for r sequential assembly. The basic EDM -1 consistsf operations control unit with t4 about Beaucart and video monitoring, an ad r switcher with special effects,'x display monitor, a convenienfu function calculator, typesit stereo machines? styled keyboard, special job-oho selector keys, and a compute F cessing unit. Patent U.S. Spring For More Details Circle (90) on Reply tl Pending loaded hold down rollers Automatic Telecine Spherical head -conical Cohu's CAT is a complete.: seat adjusting to- use -telecast telecine film screws with full NTSC color outpu Tapered can handle 35mm slides, cartridge motion picture film plus ha guide visions for Super 8 film. The s . Cart features a color encoderinlxr locating enhancer /auto balance, i 9: spring paint which provides the us n capability to manually adjustJbi of red, green. and blue colo +. Cohu's color comp which ta 9i the user to individually adju. lis hue and saturation of reds, yi'be Everythìng. mi. d greens, cyans, blues, and in Don't let anybody tell you that all stereo justing screws for which patents have been the picture. rl broadcast cart machines are the same. applied provide uniform, positive contact For More Details Circle (91) on Reply ' It just isn't so. Because we've built into immune to movement from external forces. our Beaucart stereo units proprietary Little things? Sure! There are a hundred cartridge locating features which enhance little things that make full -featured Beau- stereo phasing from cartridge to cartridge cart the stereo machine for you. FM Educational under long term, continuous service con- Let us ten you more. Write or call today Antennas ditions. for further details and pricing. You'll be In the FM educational Take a look at the photo. No other ma- glad you did! Phelps Dodge offers six chine incorporates these features. Our 4 spring -loaded rollers ensure repeatable Because of the normally location of each cart's left corner post. powers required in educa The tapered cartridge guide allows each umc service. the new ante cart to squarely contact the roller and feed BEAUCART DIVISION fabricated of 7/8 inch sta smoothly into the machine. Our locating tubing. The circularly. spring positions the cart against the right - UMC ELECTRONICS CO. 11/2 hand guide every time, and our unique ad- 460 Sackett Pomi Rd North Haven C r 06473 12031 28877731 antenna is a turn he For More Details Circle (49) on Reply Card 68 BROADCAST ENGI

www.americanradiohistory.com horizontal element has a the void which currently exists is introducing a new video delay figuration. These antennas between an educational series rated package from Matthey Printed plete with matching harness at 200 watts per bay and the Products which will accommodate pe cables and are designed standard antenna series rated at any delay from 10 to 2,120 ns. nt on tower legs or support 5.000 watts per bay. Designated The product consists of a 51/e" 11/4 inch to 21/4 inch dia- Catalog Nos. CP -1000 and HP -1000 Vero card frame which accepts The multi- element arrays the two new antennas are parallel eight cards and is supplied with gned for an element spacing fed so that a 2 -bay antenna is rated BNC connectors in and out. A f4 t. at 2 kw. 3 bay at 3 kw. etc. ns. vernier is supplied on the front models, designated Catalog For More Details Circle (92) on Reply Card panel of each card. CFM -I. -2. -3, -4, -5 and -6 Matthey equalized video delay ailable. Power rating in Video Delay Series PC modules can be fitted to the varies from 0.2 to 0.5. Television Equipment Associates Continued on page 70 ain ratings range from 0.43 I; field gain from 0.65 to d. gain in dB from -3.66 to When accuracy Counts ...Count on Beier at one mile, I kw. MV /M 90 to 239. for NN1 /F111 /TU MONITORS orating the general design of other Phelps Dodge nications circularly polar - tennas, the new FM educa- ries is less susceptible to and assure phase coinci- the centers of both vertical zontal components. ,p MONITOR to be displayed will be two watt per bay circularly BELAR CALL ARNO MEYER (215) 687 -5550 rizontally polarized FM ELECTRONICS LABORATORY, INC. antennas designed to fill LANCASTER AVENUE AT DORSET. DEVON. PA 19333 BOX 826 12151 687 -5550

For More Details Circle (62) on Reply Card ft Jamieson No.1 in TV! Why is the Jamieson Processor No. 1 in TV? The best answer is from someone who owns one. Someone you know owns a Jamieson. Probably a lot of people you know. Why not ask them about it? The best way to get an unbiased appraisal of its performance. Or ask us ... we'll be more than happy to tell you about iv Ott Model the Jamieson Processors and give you references. JAMIESON'S ADVANCED DESIGN TECHNOLOGY FEATURES kn advance virtually tension -free. The demand top- overdrive Temperature in primary solutions is controlled to an accuracy of n transport uses no clutches, floating rollers or film sprockets. a few hundredths of a degree. naller machines take only half the floor space. The eliptical shape of the tube protects the film and provides high -kolution volumes reduced 15 times over open -tank designs. induced turbulation

Please send intormaeon on Jamieson Processors and a list of some users. III I Name Title ' Firm Phone MIESON FILM COMPANY I Address City 'REST PARK ROAD DALLAS TEXAS 75235 State Zip JAMIESON FILM COMPANY 214.350 TELEX 73 -1283 -0932 I 8E -8 6911 Forest Park Rd. Dallas, TX 75235 fa IL A JP' 1976 For More Details Cucle (50) on Reply Card www.americanradiohistory.com Continued from page 69 2.120 ns. Cards for mounting pulse use with their HL -33/35 I card to accommodate any video and blanking delays are also avail- Battery Packs for Electronic delay from 10 to 2.120 ns. equalized able. Gathering (ENG) portable to 5.5 MHz and padded to 3 dB. The principal feature of the cameras. For reasonably permanent in- Matthey 5.25 series is the conveni- The Frezzolini Battery Sego stallations, the cards are delivered ence of changing timing require- automatically charges five or 1, with the final 150 ns. of delay un- ments by the addition and sub- the battery packs at one tim connected for completion by the in- traction of Matthey delay modules use simply plug in one, two, 114 staller. For installations where on the cards. four or five HL -33/35 Brq reasonably frequent delay changes For More Details Circle (93) on Reply Card Packs. regardless of their st, s are anticipated. the card panels can charge, push the "Power" git be supplied with six switches and Battery Sequences switch to "On" and leave ht the f4 ns. vernier which would Frezzolini Electronics Inc. intro- alone. provide infinitely variable delay of duces the Frezzolini Battery Se- The Frezzoline Battery Segtn4 310 ns. in seven ranges from 10 to quencer with built -in charger for will bring each Battery Pa i sequence to its full- charge .ta in ten hours or less, as nece.at When fully charged. each B:t4 Pack automatically goes n trickle -charge rate. A lamp.* ik lighted, indicates "Ready ". Al indication. disconnect one, or Al of the Battery Packs, and use bench mark The Frezzoline Battery Segen4 was field- tested, before goinliot production, by a TV network cartridge machines Department. The Sequencer 4 signed for either mobile or station operation. The company also manuf individual FREZZI HL- Ikegami Battery Packs. indi FREZZI Chargers for the B.ta Packs. other FREZZI SEQUA ER /CHARGERS, and Conl:) Systems, plus other electronic nit ucts for O.E.M. application( ItAgni0 or write the Sales Manager fosu* information. 1!1:C, For More Details Circle (94) on Reply 0 +l Folding Cart Gruber Products, manufacrts of the WHEELIT line of v'4 carts, has developed a new fdi9 cart for the broadcast and 1Fr markets. The Model ENG -1 at; for transportation and use op4 table television equipment. Its it designed that it will accept met Measure all others against us all portable VTR equipmen a+h Other cartridge machines are copies of ITC's, but won't power supplies as well a th perform like ITC's. The differences are inside. Design various back packs of some Iffy innovations, master workmanship and superb customer broadcast type cameras such lb services are ITC marks of leadership in quality cartridge Ikegami HL -33 or HL -35, FO equipment. We'll prove it with our famous 30 -day guar- or'( antee of satisfaction. Write. Or phone us collect: KCN -40, Philips LDK -11 309-828 -1381. 390, etc. With the addition of a Quire' Model 7900 elevator column iii If1TERf1RTIOfAL TAPETROAICS CORPORATIOA choice of various heads, it be 2425 SOUTH MAIN ST., BLOOMINGTON, ILLINOIS 61701 a mobile operating unit. Theo'' the cart becomes the base '¡' Marketed in Canada exclusively by McCurdy Radio Industries Ltd.. Toronto. Ontario of Form 112 .0006 1975 by ITC tripod. For More Details Circle (95) on Reply C

For More Details Circle (51) on Reply Card 70 BROADCAST ENGINEII www.americanradiohistory.com w

ti Frequency IINEW FM AND TV Counter Systron -Donner's new Model IFIELD STRENGTH METER 60548 Counter provides coverage from 0.02 to 24 GHz in one band IFIM -71 with one connector input. Eleven digits give displayed readings. Inno- Accurate - Direct Reading - Volts or dB 45 MHz to vations of this new counter include 225 MHz - Continuous Tuning Peak or Averaging Detector (1) automatic microwave measure- (switch selectable) Wide or Narrow IF Bandwidth (switch selectable) 20 dB or 60 dB Meter Range (switch selectable) ments to 24 GHz, (2) sensitivity of AM or FM Demodulator (switch selectable) Calibrated -20 dBm in the 18 -24 GHz range, Dipole Antenna, Mounted on Case for Near -Ground Measure- (3) ability to accept signals with ments or Removable for TASO Measurements 140 dB high FM, (4) tracking of rapidly I Measurement Range (1 pV to 10 V) 4%, -Inch, Mirrored changing frequencies and (5) built - Scale, Taut -Band Meter Front Panel Speaker in warning and protection against Recorder Output high power inputs. sí r Rugged, Portable Optional features include remote 'Package Calibrated programmability, data interchange i Signal Generator, 145 MHz to 225 MHz per IEEE STD 488 -1975, choice of Battery or External three higher stability oscillators, ' Power Use as Signal rear input connectors, and IF i Source /Selective Volt - offsets. rmeter for Insertion The counter also incorporates the Loss Measurements of Filters, etc. Measures new FLACTO (frequency locked FM Harmonics to -80dB automatic computing transfer 1 Price - $2,500 com- oscillator) measuring technique. plete with dipole antenna. CONTACT US FOR DETAILS. The 60548 is 3.5 inches high by i 16.75 inches wide (8.9 x 42.5 cm); weight is 30 lbs. (13.6 kg.). 932 PHILADELPHIA AVE. MD. 20910 For More Details Circle (125) on Reply Card )TOMA C INSTRUMENTS S30V 589 3R25G, Continued on page 72 For More Details Circle (52) on Reply Card

Cartridge Tape Reproducer . le large Type 20 audio cart- Just A Friendly id tape reproducer recently in- ixiced by the Beaucart Division it 'MC Electronics Co. has been Reminder Jelled to z accept all NAB stand - In case it happened to slip your mind 'r' A, B. and C -size cartridges. o and you are one of the few remaining I)' 20 machines. with their larger 7 directional stations yet to comply with paragraph 73.69 of the FCC Rules ...you s, high x 10.1/8" wide x 13 -1/8" )e have until June 1, 1977 to have in opera- 4c dimensions. are available in tion a "Type Approved" antenna monitor. and stereo versions and are ') I WE CAN HELP YOU rnlarily stacked one above the r flojr We have supplied over 90% of all "Type 41- in multiple configurations for Approved" antenna monitors (both meter ,te or custom studio panel mount - and digital readout) now in service. n) We invite your questions concerning installa- ich cart reproducer is furnished tion, operation, remote control, sampling systems, etc. . , a primary (1 kHz) cue. with ry (ISO Hz) and tertiary (8 YOU CAN HELP US 0) cue capabilities optionally When the last deadline rolled around our order backlog resulted in an eight month delivery cycle. Plable. Reproducer cue tone 2 Q If you order now, you can avoid the last minute utilize reliable L -C net - rush; we can deliver as required; and you will not tI to provide relay contact risk missing the June deadline. nu'ut information. Front panel ASK THE EXPERTS' .d)s indicate the presence of c'ndary and tertiary cue tones .a units are fully operative when ially or completely removed 'n their slide -out cases to faci- 10170MAC INSTRUMENTS maintenance and /or repair. 932 Philadelphia Ave. Silver Spring, MD. 20910 M (301) 589-2662 %re Details Circle (96) on Reply Card

For More Details Circle (53) on Reply Card st, 1976 www.americanradiohistory.com New Products

Continued from page 71 approximately plus -minus 500 The Exciter circuitry is mo FIRST FM Exciter on three circuit boards: an Model and phase lock assembly; an CARTRIDGE QEI Corporation is now market- and PA assembly; and a I ; ing their own FM Exciter Model supply regulator assembly. Zi, and SCRs are part r with full internal guidance 675 for use in the standard FM of the I supply voltage regulation sy' with reel-to-reel fidelity broadcast band. This state- of -the- art, all solid -state unit, equipped maintaining DC output voltag (20 Hz to 15 kHz) with silicon transistors, diodes and high level of stability. The pw supplies are with FM bdcst. phase stability ICs, is unique in that it is the first also overload protter (better than 90° to 12.5 kHz) totally synthesized FM exciter on With IM distortion typicalHe, than 0.25 %, FM noise the market. With a highly stable 8 better xi with engineering plastics -70 dB, MHz crystal as the reference, its and AM noise -55 dBa Exciter gives a stereo separati, i with a replacement guarantee divider circuits can produce any output frequency in hundred kHz better than 40 dB from 30 Hz : against any performance kHz when used with the tl failure within advertised increments in the FM band. Using Model 772 Stereo Generator. I r specifications on properly a phase lock loop circuit, the fre- aligned equipment. quency- modulated oscillator exhi- an output impedance of 50 oh The Exciter fits a bits the same frequency stability as standard x 19" rack the 8 MHz crystal, supplying full mount. Witl MPX with no spurious responses. optional meter panel the Moth An AFC locked lamp indicates can be used as a complete power rl when the FMO is locked to the re- transmitter. It operates ference xtal oscillator. If the FMO either the 105 -125V or 210 -111 60 i r STILL THE ONLY CARTRIDGE is not locked, sensing circuitry cuts Hz, single phase power INDIVIDUALLY CHECKED FOR off the locked lamp and it no Either line voltage input is PHASE, FREQUENCY RESPONSE longer indicates an in operation by a simple jumper change.

AND OVERALL PERFORMANCE condition. The RF output of the For More Details Circle (97) on Reply Ca r exciter is also shut down. The Model 675 operates with Open Reel either mono or stereo input signals Recorder /Reproducer and can be pre -emphasized to a 75 International Tapetronics usec or optional 50 usec time con- duces a new open reel Recu>

stant. The unit has an adjustable Reproducer, the 750 series. Th - power output of 5 to over 20 watts uses plug -in assemblies (hlrl: and is virtually VSWR proof to en- relays, circuit cards and meet' sure total protection for the output The machine is constructed rut stages. The power amp can with- several individual operating urst stand any magnitude or phase of The list of features on th I VSWR. The Model 675 can accept Series includes: audio monirir a 600 -ohm balanced mono line. during dither recording or ila' And by means of a front panel back; fixed tape guides for 10 screwdriver adjustment, the Exciter alignment; Play /Record Sync",. can be tuned over a range of zation (PRS); "safe" mot

LIP YOUR LOUCINES`I WITHOUT LOSS OF SIGNAL QUALITY (ARISTOCART) Adding on -line reverberation after all limiting is the proven way to increase effective modulation THE CARTRIDGE FOR PEOPLE without signal pumping, but it WHO CARE HOW takes the finest quality THEY SOUND chamber to avoid overmodulation problems. DISTRIBUTORS IN ALL MAIOR U.S. MARKETS For the one nearest you, contact MASTER- ROOMTM ARISTOCART DIV. WESTERN BROADCASTING LTD. AUDIO 505 BURRARD ST.. VANCOUVER. CANADA V7X 1M6 PROCESSING REVERBERATION CHAMBERS TEL (604) 687 -21311 TELEx. 0651639 FOR AM -FM -TV DISTRIBUTORS: CANADA - McCurdy Radio Indust- ries Ltd Toronto Ont - L. A Varah Ltd Vancouver, B C GREAT BRITAIN - Selkirk Commumwtions Limited. London. Eng AUSTRALIA - Syntec (let trouv MICMIX Audio 9990 Monroe- Surt?a' Distributors. Ply . Castle Cove. N 5 W. Products. Inc 214/352 -3811 Dallas. Texas 7

For More Details Circle (55) on Reply Card For More Details Circle (60) on Reply Card 72 BROADCAST ENGINE' www.americanradiohistory.com accidental erasure of audio; cartridge fully erased. The chief application of the TSU tus indicators for record and The direct -capstan motor pro- is for rapid, remote cueing of video controls. vides acceleration to about four taped material. Up to 10 cue points times normal we Details Circle (98) on Reply Card playing speed, with- are stored in the TSU memory. A out undue stress on the tapes. second application of the TSU is

Broadcast For More Details Circle (100) on Reply Card for selection and program integra- Cart Machines tion of news material provided by *versions of the new UMC Tape Search network news services. -t broadcast cartridge tape Unit For More Details Circle (101) on Reply Card at,e are available for rack The Tape Search Unit (TSU) is i desk -top mounting. For one of the new microprocessor - Add On cartridges, the Type 10 based systems introduced by Microphone Mixer w with its 534" width may be Recortec to offer the broadcaster a Shure Brothers Inc., Evanston, d t three -in -a -row rack con- range of tape controllers. The TSU Illinois, has announced a new irons. Below, the Type 20 is works with any quad VTR equipped add -on accessory microphone mixer 1c arily stacked one above with Recortec's Reel -Servo Modifi- that offers a way to add up to six w in record /playback combi- cation (R -MOD) or with any other additional low impedance, balanced té for processing A, B, and buffered tape drive shich as the microphone inputs (switchable to it .artridges. Ampex AVR -1, IVC -9000 or the line level) to a sound system.

Fevre Details Circle (99) on Reply Card Video Memory VM -1000. Named the Model M677, the new The microprocessor in the TSU unit is designed as a "slave" mixer Eraser /Splice automatically stores and recalls up for Shure products such as the M67 Locater to 10 cue points with frame and M68 series microphone mixers, *national Tapetronics' ESL - accuracy. Cue points may be en- the SE30 gated compressor /mixer. lres Eraser /Splice Locater is a tered manually through use of the the M610 feedback controller, and *innovation combining both control panel lever switches or may the M63 audio master. # and locating the splice into be automatically inserted at the When used with the Shure M67 w. step. The completely auto- push of a button while the operator and M68. the new M677 provides a 'operation locates the splice watches the scene material on the method of stacking mixers and

I n automatically releases the monitor. Continued on page 74

MO UMT setikk

TRINITRON PLUS o BETTER H. V. REG. O BLACKER BLACKS C BRIGHTER WHITES o LIGHTER WEIGHT O BETTER LINEARITY unimEDia unimEDia Ls -nil- TRADEMARK OF SONY CORPORATION unimEDia KINGSTON LANE. AUBURN, CA 95603 (916) 878 -1250 (916) 272 -1971 unimEDia

1114 1976 For More Details Circle (56) on Reply Card www.americanradiohistory.com gives two additional microph,r line level inputs over those am_ The JUI'l when stacking two four -ch,. mixers.

By with l Chroma Keyer using an M677 a I SE30 Gated Compressor /Mix operator can convert the rt input mixer system of the SE:1, nine -input mixer for appliost such as high quality soundrrl forcement. radio or telesl broadcasting, and sound recoin By combining an M677 1 Shure M63 Audio Master. +ut Best S/N ratio in the industry can have a six -channel micros from remote feeds- no dedicated camera needed Operates mixer (microphone or lineld from two encoded video inputs --no Chroma -keyed output signals), a 600 -ohm line outit switcher required VU meter, and a headphone io Keys on any color in the NTSC spectrum tor. The M677 in combinatiovx

Zero chroma delay the M610 provides 6 inputs ps i Comb filter for minimum noise and chroma crawl octave graphic equalizer. Sync adding capability for non -composite inputs The new Shure M677 Mix be powered either from the net, Write or call today for complete specifications. 28 to 30 Vdc output of the att'c master mixer or from a h video products A67B Battery Power Supply. DWItkil/ASCIENICH For More Details Circle (102) on Reply s Township Line Roatl. Blue Bell PA 19422 Z Tel (215) 643-0250 /Telex 84 -6358 A SUBSIDIARY n `V/Via it alter New Concept Automation For More Details Circle (57) on Reply Card IGM /Northwestern Technal. Inc. of Bellingham. Washittlt will unveil a totally new conce broadcasters. Designated the MARC 1 (Manual Assist Remote Cor the system is designed to ps> IMERO FIORENTINO ASSOCIATES electronic access and autos' sequencing of program elemes .I announces its fifth live studio or control room 4* ations. This removes much Ids Television pressure from the operator* allows him to pre -set switchit * structions so that he may accts Lighting & trate on the creative aspects cPrr' Staging gramming rather than thlr chanics. Seminar / Workshop With its TV display and !IQ, entry keyboard, the MARC V Authoritative instruction covering the spectrum of current techniques, allow access to any of seven U.- given by television's most personnel including experienced production sources, each with up I Imero Fiorentino, Bill Klages, E. Carlton Winckler, David Clark and sub -sources, and is design' George Riesenberger. interface with and control r tape decks, cartridge machin DATE November 8 thru 10 -1976. random access cartridge hal Instac' LOCATION WPBT Studio, North Miami, Florida devices, such as IGM's Go -Cart. The operator mi Coss- $375. includes get- together cocktail /dinner and lunches. quence these devices in any' desired, up to 18 events in ad FOR MORE INFORMATION Please call (212) 787 -3050, or write and may make changes. de Education Division, Imero Fiorentino Associates, Inc., 10 West 66th or substitutions instantly at v. Street, New York, N.Y. 10023 The display screen proje'

74 BROADCAST ENGINE' www.americanradiohistory.com ttnt picture of events sched- equipped with "Memory -Cue" QUALITY TALKS and incorporates a digital capability. The disc recorder will FOR it as well. An external series of respond to a start command from tmonitor circuits may be the commonly marketed automatic ed also, appearing on the editing equipment, run to the exact WK E E or's screen as various alarm field, and "freeze." Huntington. W Va. la ges. For More Details Circle (105) on Reply Card

More Details Circle (103) sn Reply Card ENG Slow- Motion Camera Heads Disc Recorder A television camera head specifi- fr. new versions of the color cally designed for ENG and studio IlpNotion Disc Recorder were cameras is now available from *.uced by Eigen Video at NAB Innovative Television Equipment. hityo. The new versions have 20 The ITE -H5 Hydro Head utilizes al) second time capacities. hydraulic dampening in both pan T se discs record consecutive and tilt modes. Featured are a A as alternate tracks in each quick release camera mounting tri ion to achieve continuous plate (permanently attached to the Continental's new 5/10 kW AM k ' operation. Each track is camera); independent lock -in transmitter is setting records for rl before re- recording by dual - friction controls for both pan and acceptance. It has performance eagnetic heads. tilt; adjustable control handle; and and efficiency, with the cleanest sound around. Listen to Continen- versions of Eigen's Color counter balance torsion spring for tal: quality talks. Motion Disc Recorders are any center of gravity requirement. able to sports slow motion The ITE -H5 can be used with all editing, and post production ITE trollies, tripods and pedestals. tete frame, time -lapse, jump - Available accessories include tele- .ad animation effects. Eigen Disc Recorders are Continued on page 76 CONTINENTAL ELECTRONICS MEG CO BOX 270879 DALLAS. TEXAS 752."

For More Details Circle (59) on Reply Card 7t cart handling RAPID -Q in half. CARTRIDGE TAPE EQUIPMENT RECORD MONO

f iO E PLAYBACK STEREO

I44 SF-1 Splice Finder: $370.00 dSFE -1 With Bulk Eraser: $395.00 STE -100 ríû automatic cartridge tape splice finder is a real labor STEREO PHASE ENHANCER Pr It cuts handling time by up to 50 %, allowing busy Wars and DJ's to do other jobs at the same time. This Dr machine processes all NAB standard A, B, and C FOR CLEANEST SOUND POSSIBLE - ilt cartridges by locating tape splices and stopping the CORRECTS FOR MONO -SUM ERROR within one inch beyond the capstan. The automatic is eliminates the noise effect of recording over the which is especially annoying to broadcast adverbs- ,: handy bulk eraser is added to the Model SFE -1 splice 'to conveniently save additional studio space. Each ne is a trim 16'h" x 6" x 10" rated at 15 IPS, 117 VAC. It .250 watts. Ask about it. EDCO PRODUCTS, INC. 680 BIZZELL DRIVE LEXINGTON, KENTUCKY CBEAUCART DIVISION 800 354 -9593 40504 UMC ELECTRONICS CO. 460 Sackett Pont Rd North Haven CT 064 '3 For More Details Circle (61) on Reply Card 1976 For More Details Circle (60) on Reply Card 75 www.americanradiohistory.com New from the four inputs, the comes Let Products signals and externally. Thetil Continued from page 75 channels also provide X -Y pose Accurate Sound ties, including dual -trace X -14 Help Solve Your scopic control handle. right -hand plays. zoom and control handles. wedge The direct conversion suppl, Audio Problems adaptor and wedge plate. run from any AC supply be. ...Whatever your problems: new Cameras of up to 50 pounds can 90 and 270 V at 46 tO 440 equipment, rebuilt equipment, be mounted on the ITE -H5. Con- any DC voltage between 10(;.

reconditioning or updating. struction is of rugged, lightweight 200 V, without switching. C . Systems" capa- ASCO's "Total cast aluminum. power consumption of the o bility can solve your problem. For More Details Circle (106) on Reply Card scope is a 29W, enabling five oil 440/350/351 Capstan continuous operation on a Fib $180.00 8901 battery pack. Motors Rackmount PM exchange The PM 3244 is the latest oc Rebuild Your Mono Head Oscilloscope in Philips' range of oscillos . Assembly A 17- inch -deep, 15 MHz rack - $195.00 and fits into the same unér New Stacks mount oscilloscope is being intro- Precision Lapping $45.00 mounting frame. by Tektronix as a new Rebuild Your Stereo Head duced For More Details Circle (130) on Reply Id - Assembly member of its T900 Series of New Stacks $295.00 oscilloscopes. The new T922R has Precision Lapping $60.00 specifications similar to the bench Slide Rule Completely Recondition Your model T922. Calculator Transport $295.00 Shure Brothers Inc., Evan Replace Your Tube Electronics The new rackmount has switch - with Solid State $550.00 able inputs on the front and rear Illinois is now offering a slid n per channel panels that provide mode change - calculator which sound enfla from a general purpose test instru- can use to perform many I./ Send for our illustrated catalog involved in des& ment to a monitoring oscilloscope. computations with new and used equipment installing indoor sound= listings. The T922R measures 51/4 x 19 x 17 and forcement systems. ACCURATE SOUND CORPORATION inches and operates at 2 mV /cm Designated the Model SRC. t. 114 5th Avenue sensitivity. Greater than 80 dB of new Shure calculator provin, Redwood City. CA 94063 isolation guards signal integrity. 415/365 -2845 C5 -A Camera operation has single means for calculating: (1) ti sweep and graticule illumination. reverberation time and acts, For More (65) on Reply Card Details Circle The rackmount has ancillary rear absorption coefficients; (2) panel inputs /outputs: external phone output voltage and sentil trigger out, gate out, sweep out. ratings and (3) attenuatiot* vertical signal out, Z -axis input. resistance values. Outputs can be used to drive Supplied with the Model fig external recorders or other instru- is a 16 -page brochure coninil mentation. operating instructions, appert The T922R has 12kV 8 x 10 with charts and tables, ; display. bibliography listing sourc I For More Details Circle (107) on Reply Card additional information. For More Details Circle (131) on Reply rat Portable 4- Channel Oscilloscope Cold switching -internal remote Earth Station IlCíC control-combined with a highly - To KC efficient, compact, versatile power omzplabo [bap supply inside a standard, light- Station KBMA -TV, the in reel to reel weight frame are the keys to the dent UHF station in Kansas. realization of the world's first will be operational with svr audio recording portable four -channel oscilloscope. believed to be the first try AMPEX and Scotch Philips has introduced a portable receive earth station set up baqi TAPE all professional grades on reels or on hubs 50 MHz oscilloscope with 5 mV station, in time for the Reps EMPTY all sizes, widths sensitivities and an 8 x 10 cm dis- Convention. REELS and hub types play, that weighs 9.5 kg, PM 3244. KBMA -TV has already fiIu Up to six signals can be displayed the earth station, which wil$ BOXES for all reels, in various colors simultaneously -the four input sig- joint venture by the !Wiwi? LEADER -,TIMING- & SPLICING TAPES nals and two differential signals. UHF and Transcommuni Top Quality Competitive Pricing Triggering for the main timebase Corp.. a multi -purpose comnllit Immediate Shipment can be from any of the four input tions firm located in Gre(A Call or Write for Details /Prices or composite signals, the incoming Conn. TranscommunicationsfdF recording supply corp. line supply, or externally. The will purchase the earth statialA' 1291 RAND RD -DES PLAINES, IL 60016 -TV. 312/297 -0955 delayed timebase can be triggered lease it back to KBMA /'

76 For More Details Circle (63) on Reply Card BROADCAST ENGINrPN www.americanradiohistory.com becasting

&dEng figures in the broad - veloped by the British Post Office. `3 industry will converge on and the experimental "text televi- 976 Biennial International sion." Prenc tit ed tu &casting Convention, Grosve- Another area of rapid growth is RADIO + loure, London, September electronic news gathering, utilizing WKYG STATION -FM .2 hand held color TV cameras in Parkersburg, .N recognized as one of the conjunction with portable videotape W. Va. p:r international events in the recorders and lightweight micro- for outstanding and meritorious ,}acast engineering field, IBC wave links. A special session will ability and intelligence demon- s rown continually since its allow users and equipment manu- strated in the decision to install von in 1967. The sponsor is facturers to air their problems and Aural Studio - Transmitter Link tit that this year's show will to display the latest available equipment and the high degree of p IBC '74 which attracted equipment. knowledge exercised in making the rthan 2,000 delegates from 44 The convention will be opened by equipment selection." fries. Admiral of the Fleet, The Earl Why STL? N techniques and equipment Mountbatten of Burma, Chairman 1. No "lost air" time due to cut, wet or e whole spectrum of the in- of the National Electronics- Council. electrically charged telephone lines. it. will be shown at the conven- The event is sponsored by the Elec- 2. Better Sound Quality Than o Class AAA telephone line. nAll available exhibition space tronic Engineering Association, In- 3. EVENTUAL COST REDUCTION in siready been allocated and stitution of Electrical Engineers, operating expense. 4. Complete control of entire broadcast r han 60 manufacturers will be Institute of Electrical and Elec- system. s t, along with the BBC and tronic Engineers, Institution of Why Dual Channel? idependent Broadcast Au- Electronic and Radio Engineers, 1. A Duol-Chonnel costs less than o lt Royal Television Society and Society Composite. f technical program consists of of Motion Picture and Television 2. Better Reliability than a Composite. "Built in Backup." r han 60 papers in 14 sessions. Engineers. 3. Greater Channel Separation than o sraspect of conventional broad - For further information contact: Composite. 4. Less Signal Drive Required to Re- it ; is represented from studio Exhibition organizer: The Secre- ceivers means additional system tt.s, recording, digital techni- tariat, International Broadcasting Fade Margin. 5. Less Test Equipment Necessary and e ISS, Savoy and picture origination Convention, Place, Lon- more Positive System Diagnosis. o h transmitters and aerials. don WC2R OBI., England. 6. Stereo Generator is away from Studio é1 chairmen and Unauthorized Tampering. are drawn from 7. Stereo Generator and Broadcast , iited States, Italy, France and Transmitter Compatibility without ICI, among other countries, and Interface. 8. Having a Dual -Channel STL is like t igins of the papers indicate anginalnieux service corporation of california having a Spore Link. t rld-wide status of the event. 9. Two Remote Control and Two Sub - Carrier Capability. A:rican experience is reflected FACTORY SERVICE +.nge of papers which includes CENTERS Why MARTI? REPAIRS - PARTS 'its as diverse as "A Technical ACCESSORIES I . Channel Separation more than 65 :.11, of Helical db. Recording ", "Ex- angerneux service corporation of new York 2. Channel Response matched to 0.25 I(ig PCM Video Response db. o the Nyquist 3. Distortion less than 0.5 %. Limit ", "Design For More Details Circle (140) on Reply Card 4. All Solid State. +_ompletely Solid -State 1KW 5. A Simple, True Direct FM Plug -in 4 iroadcast Transmitter" and Modulator. 6. Complete occessibility to Modules ittlarly Polarized TV Broad - without removal from rock. 41; Aerials." BUILD A BETTER 7 The Morti System Delivers Top Per- f' formance with Transmitter manu- sessions will concentrate on facturer's Stereo Generator. x, areas of development in STUDIO 8. Morti STL Systems Log over TWO this Call Aderhold Construction MILLION (2,000,000) Broadcast untly developing and changing Company. A complete con- Hours each Year. 'g7- Papers will be given on struction management team 9 AVAILABLE FROM STOCK. ',stems of architects, builders, en- utilizing the domestic gineers and designers. No The Stereo STL with ryon receiver for information problem too large or too "Built -in Backup." P Teletext systems including small. 404/233 -5413. Dual Channel System (Stereo) $4160.00 BC CEEFAX and the IBA Aderhold Single Channel System (Mono) $2290.00 Construction (Does not include cost of 4 programs Antennas will be featured. or Transmission lines, will Company also cover VIEWDATA, 3384 Peachtree Rd RE I Atlanta. Georgia 30326 Uphone network system de- MARTI for More Details Circle (141) on Reply Card k 1976 For More Details Circle (66) on Reply Cad www.americanradiohistory.com advertisers' ól.ila PROFESSIONAL Eil RALPH E. EVANS ASSOCIAT, Accurate Sound Corporation 76 Marti Electronics 77 Consulting TeleCommunications Engine Aderhold Construction Company 77 MicMix Audio Products, Inc 72 AM- FM -TV- CAN -ITFS Angenieux Corporation Micro -Trak Corporation 52 3500 North Sherman Boulevard 44 of America 77 Microwave Associates, Inc 7 MILWAUKEE, WISCONSIN Aristocart Division of Minneapolis Magnetics, Inc. 60 53:l PHONE: 14141 442 -4210 Member AFCt Western Broadcasting 72 Monroe Electronics, Inc. 66 Audi -Cord Corporation 20 Moseley Associates, Inc 47 Audio -Video Engineering Co. C -4 Applied Video Electronics, Inc National Radio Broadcasters Inc Association 35 STUDIO SYSTEMS DESIGN AND INSTdN Belar Electronics Lab., 69 LATION ENGINEERING. REFURBISHINra Belden Corporation 57 MODIFYING COLOR CAMERAS AIa Otani Corporation 62 Berkey Colortran 46 OUADRUPLEX VIDEO TAPE RECORDErR Broadcast Electronics, Inc. 14 Post Office Box 25 Philips Audio Video Systems Corp..17 Brunswick, Ohio 44212 Potomac Instruments 71 Phone 225 -4443 CSI Electronics, Inc. 39 (2161 Canon Video 9 RCA Systems -Communications VIR JAMES Central Dynamics Corporation 19 Div 49 Cetec Broadcast Group (Sparta) 5 CONSULTING RADIO Ramko Research 33, 59, 61 Applications and Field Engineering Commercial Electronics, Rapid O (Edco) 75 Computerized Frequency Surveys Inc. (CEI) 15 Recording Supply Corporation 76 345 Colorado Blvd. Phone: (Area Code 303) 333-5562121 Communications Medias 67 Recortec, Inc 58 DENVER, 8020(01 Continental Electronics Mfg. Co. .75 Revox Corporation 43 COLORADO Member AFCCE Datatek Corporation 63 Scully! Metrotech -Div. of Datatron, Inc. 8 Dictaphone 64 Inc 53 Dolby Laboratories, Shure Brothers, Inc Cover 4 MIDWEST ENGINEERING ASSO cl Dynair Electronics. Inc. 21 Skotel 60 ConsuLtin9 E.n9incct Dynasciences 74 Sony Corporation of America ...22, 23 Sound Dynamics 16 6934 A N. UNIVERSIT) English Electric Valve N.A. 10 PEORIA, ILLINOIS 6161 Sound Technology 11 (309) 692-4233 Fidelipac 12 Spotmaster 14 Imero Fiorentino Associates, Inc. ..74 Frezzolini Electronics, Inc. 27 Teledyne Energy Systems 16 TeleMation, Inc. 30. 31 W. H. BRADLEY, P.E. General Time Service 54 Television Equipment Association 67 Consulting Rad o Engineer The Grass Valley Group, Inc. 3 Texas Electronics, Inc 54 Engineering Applications 6 Field Engineering Harris Time & Frequency Technology, Corporation 65 Phone 918 -245 -5444 Inc. Cover 2 300 West 41 Street. International Tapetronics SANG SPRINGS OKLAHOMA, 7406. Corp. 55. 70 UMC Electronics Company 68. 75 United Recording Electronics Jamieson Film Company 69 Inc. (UREI) 18 DAWKINS ESPY Unimedia 73 Consulting Radio Engineer Leasametric 13 Applications /Field Engineers) Video Aids of Colorado C -3 McCurdy Radio Industries, P.O. Box 3127 Olympic Station)it Videomax 1 Inc. Cover 3 Beverly Hills, Californi McMartin 37 Wilkinson Electronics, Inc. 56 (213) 272 -3344

SMITH and POWSTENI) Broadcasting and Telecommunication, Consultants

2000 N. Street, N.W. . Washington, D. C. 2001,5 Mental Retardation (202) 293-7742 James Tiner, Pr04 can be TINER COMIGUNICATIONS SERVICE, If 1 We Specialize in Towers" a Complete Tower and Antenna n prevented Installation and Serve P O Box 3827. 15201 Hickman Road Des Mornes Iowa 50322 15,512`4

Joseph E. Donna Roizen To find out how, write: National Association for VIDEO CONSULTANTS Retarded Citizens, Civitan Inquiry Program, P. O. International TV Systems Box 6109, Arlington, Texas 76011. Marketing/Technical Wntin 800 Welch Rd.. Suite 354 Palo Alto. Ca. 94304 Tel: (415)326 -6103 78

www.americanradiohistory.com SERVICES (CONT.) EQUIPMENT FOR SALE (CONT.) KVMN, KFEL, KUBC, AND KEXO all agree that WHATEVER YOUR EQUIPMENT NEEDS -new or ring rates in Classified Section are 25 we do a better job of cartridge rebuilding. Next used -check us lust. We specialize In broadcast word, each insertion, and must be time, try us instead! Rocky Mountain Cartridge, equipment. Send $1.00 for our complete listings. led by cash to insu e publication. Box 1676, Pueblo, Colorado 81002. 8 -76-lt Broadcast Equipment 8 Supply Co., Box 3141, nitial or abbreviation counts a full Bristol, Tenn. 37620. 3-75-t1 inimum classified charge, $2.00. FREQUENCY MEASURING SERVICE -WE'RE 112 840 FEET of 6-118 inch RCA Universal Transmis- t on which replies are sent to us for -MONITOR REPAIRS- MOBILE UNIT -covers sion Line with hangers. $10,000 as Is. F.O.B. (blind ads), there is an additional Northern íh III., Eastern Iowa, Eastern Minn., WMJC Radio, (313) 588- 8100. 8 -76-21 53.00 per insertion, to cover depart- Southern 24 Wis., Western Mich., and Western processing of replies, and mailing ,ber, Ind., monthly. Radio Aids, 528 Ravine Ave., Lake BROADCAST CRYSTALS for AM, FM or TV trans- Bluff, Illinois 60044, (312) 234 -0953. 2 -74 -tf mitters. frequency change, repair or replacement riffled columns are not open to advertising of oven types. Also new vacuum types for RCA, regularly produced by manu- oducts COMMERCIAL RADIO MONITORING CO. Preci- Gates, Collins, etc. transmitters. Quality prod- unless used and no longer owned by sion frequency measurements since 1932. Local ucts, reasonable prices and better delivery! Don't or a distributor. facturer and mobile service covering entire midwest plus. be without a spare crystal. Frequency change and Test instruments, counters, monitors repaired service for AM and FM frequency monitors. Over r and certified. Lee's Summit, Mo. 64063. (816) 30 years in the business. Eidson Electronic Co., TRAINING 524- 3777. 9 -74 -tf Box 96, Temple, Texas, 76501. Phone (817) 773 -3901. 12 -74 BUILD YOUR OWN TV AND RADIO PRODUC- -tf )UR ELECTRONICS DEGREE by corre- TION EQUIPMENT. Easy, inexpensive, (mostly A FEW COMPETITIVELY PRICED used Revox A77 G. I. Bill approved. For free ecce. IC). Plans or kits: Special Effects Generator, 8 A700 decks available. Completely reconditioned write Grantham School of Engineering, Mt Automatic Logger, Vertical Interval Video Switch - by Revox, virtually indistinguishable from new en ion Desk, 2000 Stoner Avenue, Los er. Solid State Lighting Board, Preset Audio- and have the Standard Revox 90 day warranty for .Ilse Calif 90025. 8 -72 -tf Video Board, Preset Lighting Board, Crystal Con- rebuilt machines. Satisfaction guaranteed. Ex- trolled Wireless Mikes with Matching receivers. ample, A77 with Dolby, shipping. ONE in six to twelve weeks through $675, plus Sh Subsonic Tone Control for audio tapes, 8MM Write requirements to ESSI, Box 854, Hicksville, r r irded lessons at home plus one week SOF Cameras and Projectors, Distribution Ampli- N.Y. 11802 (516) 921- 2620. 5.76 -tí so instruction in Boston, Philadelphia, fiers (Sync. Video, Audio), Audio Boards Chicago, Seattle or Los Angeles. Control . 1w'.tlanta, (Studio 8 Remote) Proc -Amp with compensation MOTORS FOR SPOTMASTERS Mtietn year teaching FCC license courses. and regeneration for adapting Helical Scan VTR's NEW Paps hysteresis synchronous motor HSZ - -.son Radio License Preparation, 1201 to broadcast standards. PLUS Specialized corre- 20.50- 4 -470D as used in series 400 and 500 - enhauan Beach, Calif. 90266, Telephone a. spondence courses in TELEPHONE Engineering machines. Price $49.00 each prepaid, while they P 461 8-75-t1 Terms ($39.50), and Integrated Circuit Engineering last. 90 day warranty. check with order Plans from only, no COD's. Not recommended for Tapecaster MAST ENDORSEMENT and third phone ($49.50). $5.95 to $15. SUPER CATALOG plus years updateing of new devices series 600 or 700. in on cassettes. Illustration book in- r Air Mailed Don Britton TAPECASTER TCM, INC., Box 662 e sirrem FCC-type exams. Radio License $1.00. Enterprises, P.O. Waikiki, Ha. Rockville, Maryland 20851 1201 Drawer G, 96815. 5-76-361 w in, Ninth, Manhattan Beach, Calif. 1 -72 -t1 8.75 -t1 MICA AND VACUUM transmitting capacitors. Vacuum relays. immediate 4YR FIRST TO GET THERE FIRST! DON WANTED Large stock; delivery. Price lists UI3CHOOL OF COMMUNICATIONS/ Since on request. SURCOM ASSOCIATES, Ave., ling Broadcasters for Broadcasting! 1st WANTED: All surplus broadcast equipment 305 Wisconsin Oceanside, Ca 92054, (714) JO lining using latest methods and com- especially clean A.M. 8 F.M. transmitters, 722-6162. 3.76-tí e,uipped Transmitter studio. Call or write capacitors, 112 Clark Z. Potomac Phase monitors, AUTOMATION EQUIPMENT AR -10O3, t and start dates. Don Martin School, Field Strength Meters, etc. High prices. All CCA -1969 r Reels t.Fywood Blvd., 5th floor, Hollywood, CA custom duties paid. Surplus Equipment Sales at 2 Decks, 2 plus all accessories. Excellent condition and almost never used. WPUL, Box -11. 11 (213) 462 -3281 or (213) 657 -5886. 2 Thorncliffe Pk. Dr., Unit 28, Toronto 17, Ont., 1433, Bartow, Florida 33830 (813) 533 -9093. 8-75-tí Canada (416) 421 -5631. 1 -76-If 6-76-31 8 C EXAMS with Ameco books. Each WANTED: Pre -1926 radio equipment and tubes. ,talns FCC questions plus simplified August J. Link, Surcom Associates, 305 Wiscon- FOR SALE: TR -22 High band color video tape eríius FCC -type exams and answers. 3rd sin Ave., Oceanside, Ca. 92054, (714) 722 -6162. machine, also one CEI -280 plumbicon broadcast camera. WXON -TV, P.O. {hides broadcast endorsement $1.00. 2nd 3.76-tí Write Box 2020, South- _465, 1st class 11.50. Free catalog. Ameco field, Mich. 48075 or call 313- 355 -2901. 5-76 -If AO). 275G Hillside Ave., Williston Park, GOOD COLLINS 21E transmitter. Call 408 -475- SPARTA /BAUER Model 710 AM transmitter, 10 1 S. 8-72 -t1 0172 or write: Grant Wrathall, P.O. Box, Aptos, Calif., 95003. 7 -76-61 KW serial 101, high performance modulator -like new one year use. Frequency 1500 KHZ, new c Furst and second class exams with tubes, Contact Edwart Alatorre, (213) C isson, 450 -page course. Starts with WANTED -Used 250W AM Transmitter for use $17,000.00. 7 -76-31 $ :tricity Over 600 FCC -type, multiple with carrier. Current operation. WUVT Radio, 965-2441 and (714) 996-5685. ,. estions and sample exams included. No Squires Center, Blacksburg, VA, 24061. Jon h technical knowledge required. Com- Banks, 703 -552 -0640. 8-76lt TWO 3M DROPOUT COMPS. with VR -1200 inter- lace kits. Used one month. Best offer. C. Egolf, ' Me adio Operator Theory Course, 015-01. 15. Ameco Publishing, 275G Hillside GATES EXECUTIVE STEREO CONSOLE, OR WKTV, P.O. Box 2, Utica, NY 13503. 8-76 11 sy Moo Park, N.Y. 11596. 672-tf DIPLOMAT dual channel console. Kenneth Tusar, --wow* 78 Pennsylvania Ave., #10, Binghamton, New GATES CONSOLE -LIKE NEW, Dualux, 9 mixer, York 13903. (6071 723 -0129. 8-7631 dual channel, 1968 vintage. Used in film SERVICES production studio. With manual, $1200. Kenneth ,t Tusar, 78 Pennsylvania Ave., 010, Binghamton, New York, 13903. (607) 723-0129. 8-7621 í1P FOR ALL YOUR PROFESSIONAL EQUIPMENT FOR SALE .OUIREMENTS. Bottom line oriented. FOR SALE /IMMEDIATE DELIVERY-ATC AUTO- + wer Company, P.O. Box 8057, Pensa- FOR SALE -CBS Stereo Audimax /14450A, Serial MATION EQUIPMENT. Programmer SP -10 -O, Aida 32505. 7 -71 -I1 45277 and Volumax #4110, Serial #3322. Asking Switcher AMS- 10 -S3, Digital Clock DO-10, Time $1800. call McGraw, (517) 774-3118. 7.76-2t Selector PTC-2, Auto Restart AR -1, Monitor Con- ii'YROFLEX. Large stock -bargain trol Panel, Equipment installed In 6' rack with b and Certified. Write for price and 23' TV PRODUCTION TRAILER -complete with top, side panel and rear door, $2,500.00. F.O.B. Serra Western Electric. Box 23872, Rest Room...Refrigerator 8 Air Conditioner... George Moyer, WDEL, Wilmington, Delaware, 'alit 94623. Telephone (415) 832 -3527. Equipped with Sorenson Power Regulator...Dual 19899. 8-761 t 1 -73-tI Bay console 2 Hitachi Plumicon Studio Cameras w /extended Pb's... Intercom 8 Talley system... IGM DUAL LEVEL MEMORY. This dual level MOS ''PTUBES...ALL TYPES EXCEPT ORTHI- Hercules tripod, cam -head 8 Dolly (2)...Tektronix has been converted to single memory with 900 x V NOW BE RECONDITIONED AT AN vectorscope ..5 Conrac 9" B/W monitors...wave - steps. May be reconverted to dual level with any t ABLE PRICE. LEAD OXIDE TYPES form monitor... Hitachi color sync. gen...2 3M combination of the 900 steps In either upper or 4u IDICONS FROM $35 TO $200 00. ALL Distribution ampl...Dynascience Image enhancer lower level. Also, eight spare electronic compo- ON H ...Shinfron production switcher...2 IVC 870 VTR's nent boards for the MOS. Total price $1,200.00. 11:7 DETAILS WRITE RODONCO ..TRI Editor. _Shure audio mixer wl micro's._2 Contact Alonzo Pendleton, c/o WOUD -FM, P.O. fN RING CAMERA TUBE DIV. , 4020 audio /video patch bays 3M "Prot" amp1...3M Box 12468, Memphis, Tennessee, 38112. Call SAE N DR BLOOMINGTON. IND. 47401. char. gen... Lighting kit._Original price, $150K... 901- 274 -3400. 8-76-1t 8-75-tí Bicentennial special ONLY $97,500.00. This Pro- duction trailer can be pulled with ease by a AMPEX VR1200B videotape recorder, expertly 411P'V_ D CONSTRUCTION- MOBILE UNITS, station wagon or pick -up truck for remote Tele- maintained. Excellent operating condition, Y STUDIOS, TURN KEY AND /OR CON - vision recording. Completely operational for Edu- equipped with VELCOMP, DG, VHO, 3M DOC, 1 20 YEARS EXPERIENCE). TELEVISION cation, Industrial or CATV usage Call TRI- sparehead, 1 V years old, 1600 hours. Dallas D. ar tES. INC . Box 29486, Atlanta, Ga. TRONICS (213) 877 -9912, Mr. Bailey or Mr. Clark, TPC, 445 Melwood Street, Pittsburgh, I íp4- 9100. 5-78-81 Kaylor, for additional information. 8-7611 Penn. 412 -682 -2300. 8-761 t

www.americanradiohistory.com EQUIPMENT FOR SALE (CONT.) HELP WANTED (CONT.) HELP WANTED (CONt

FOR SALE: Three. teas than six months old and MAN INSTALLATION BUSINESS YOUR CITY, still under warranty. VJB -12 Juke Box with the PART TIME $200 00 DAY POSSIBLE. MELVIN hollowing options. 8.12.1200 Sony VP -1200 COHEN. BOX I309. BOYNTON BEACH. FLA. Videocassette player Interlaced for VJ13-12, B -12- 33435 7.76-61 1800 Sonly VO -1800 player/recorder Interlaced for VJB -12. B- 12 -GDM V.18 -12 Graphics display OPERATING ENGINEER, with First Class FCC option and B -12 -M monochrome monitor option. license to work television control room. Immedi- For information call Gene Carlisle, Video Cinema. ate opening. ideal community located in Alaska. 9011833 -4127 8.76.11 Send resume and salary requirements to: George Howard. Chief Engineer, Northern Television.

SPARTA MODEL AS-38 MIXING CONSOLE. 2 Inc . Box 2200, Anchorage. Alaska, 99510. 7.762t years old 5 audio inpuls. 14 source capability 1_ 1 all- channel cue system. mornlpr amplifier and TELEVISION MAINTENANCE, or Electronic Tech- muting relays 3500 Aetna life 6 Casualty. Basil nicians on Broadcast Color Television Equip- ^Exciting engineering op O Hayes. 151 Farmington Avenue. Hanford, ment, lo work in either Northern New Jersey or Connecticut 06156, or call 1203) 273-3951 8 -76 -lt Orange County, California Send resume to tunity to work in one cri V P C. PO Box 288, New Hyde Park, N Y. finest television produco* 11040 7 -76-II facilities in the world....i SITUATION WANTED new OPRYLAND PRO[{'

EXPERIENCED VIDEO PRODUCER /DIRECTOR. TION CENTER in Nas)illl Seek position with Production Service, Public. SWITCHER SALES: or Institutional Television Media Tennessee! Network deli Commercial Locate L.A. area, willing to travel Define. 1st Phone Will relocate 1.616- 938-1934 commericals, and othetit3 evenings, or write Box 359. Broadcast Engineer- West coast. Like to sell quality ing, 1014 Wyandotte Street. Kansas Cuy. products. Write: lenging productions. Missouri. 64105 8 -76.11 Nubar Donoyan Superior working coi Vital Industries, Inc 3700 N E 53rd Avenue tions, benefits. Salary (IT' Gainesville. FL 32601 Tel 904-378-1581 tl HELP WANTED mensurate with experiecer plus overtime. Send cotpJrl GOOD OPPORTUNITY for broadcast engineer seeking more responsibility with rapidly growing resume to: video production facility Quad video experience David Hall required Send resume to Larry Seehorn. Tele- SALES vision Associates. 2410 Charleston R,ian P.O. Box 2371 Mountain View. CA 94043 A leading manufacturer of AM /FM bra asl transmitters has an immediate opera Nashville, Tennessee 3:k CHIEF ENGINEER- Mid -South AM Radio Static' a technically -oriented sell- starter sit seeks a qualified person to assume the duties of 'epresenlalive to sell broadcast equipmr. (615) 889 -6840 chief engineer Experience in studio equipment in the domeslic market 50 kw transmitter equipment and directional

arrays necessary Must be able lo handle all you musi be willing to travel extensive , engineering management duties Current Firs, Compensation i5 excellent-on a base Class FCC license required Send resume and '.alary plus commission basis You'll also requirements to Alonzo Pendleton. ,'nloy an outstanding benefits package WDIA Radio Station, P O Box 12045. Memphis Tennessee. 38112 8 -76 -11 iVe an equal Opportunity employer To BUSINESS OPPORTUm l',r send your resume complete with

VIDEO SALES ENGINEER -Professional V'dei qs hiStOry '. Switcher manufacturer requires aggressive DESIRE ALLIANCE with National Sal ara creative. sales engineer Solid background in Broadcast Engineering. Dept 361. zation Product Computerized Lough dl professional video sales andlor engineenno .,.ii4 Wyandotte S' ,sas Cily. Mo 64105 counting for small and medium PI necessary Degree helpful but not mandatory Stations. 12031 445 -2325 This is a great Opportunity for someone willing to grow with a small, yet last growing, company located in Gainesville, Florida Salary com- mensurate with experience and ability Write in complete confidence, detailing experience and general background, to Industrial Sciences. Inc P O Box 1495. Gainesville, Florida. 32602 8 -76-21

TELEVISION ENGINEER. First Class FCC license Background in Ampex 1200 maintenance BROaDcasT enGineeRinG required Famous year -round Colorado recreation- al area Contact Al Ladage, CE. KREX -TV, Box 789. Grand Junction. Co. 81501 303- 242.5000 Regional advertising Mountain View. California 6 -76.11 Dennis Triode, 2680 Bayshore From - sales offices Room 102, Mountain View, Ca 140431íc' CAMPUS SYSTEMS T.V. ENGINEER -Large 0373 medical school located in central Virginia needs lop engineer to maintain and trouble -shoot equipment in audio -visual department Must have London W C. 2. England experience in color television systems Excellent Kansas City, Missouri John Ashcroft 6 Co. 12 Bear St benel'ts. Contact University of Virginia, Person- Mike Amite, 1014 Wyandotte St. , Kansas City, Square. Tele 930 -0525 nel Dept., Madison Hall. Charlottesville. Virginia, Mo 6410.5, 22903 An equal opportunity employer 6.7611 (9131 888-4664 Baäaevedorp, Holland BROADCAST /CCTV -Industrial tube and compo- Indianapolis, Indiana LuCaP1 John Ashcroft 6 Co. , John J. nent sales manager position major available with Roy Henry. 2469 E 9811 St , Indianapolis, Ind Slotenweg 303 N Y. electronics distributor. National responsi- 46280 13171 846.7026 bility for sales /markelmg for entire broadcast division Good salary and full benefits. Send resume Dept. 360, Broadcast Engineering. 1014 New YOrk, New York Tokyo. Japan Representatives. I Wyandotte St.. Kansas City. Mo 64105. Equal Stan OaOoln, 60 E. 42nd St , Room 1227, New International Medi. Opportunity Employer. 8-76lt York, N Y 10017. (212) 867 -7240 Kotohuacho. Minalo -ku. Tele 502-06 CHIEF ENGINEER. AM- FM -TV, network affiliate, group owner, good salary, good benefits pro- r gram, Send resume to John Phillips, General Manager. Lee Enterprises, Inc.. 510 Maine Street, Quincy, Illinois. 62301, Operating WTAD AM, WOCY FM, KHOA TV. An equal opportunity employer. Applications received Ihru August 15th. 8-76-11

80 BROADCAST ENGI

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