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Antique Radio Classified
ANTIQUE RADIO CLASSIFIED VOLUME 3 AUGUST 19E6 NUMBER 8 • QUAKER OATS CRYSTAL SET From the collection of Randall Renne - Dixon, IL THE NATIONAL PUBLICATION FOR BUYERS AND SELLERS OF OLD RADIOS AND RELATED ITEMS - PUBLISHED MONTHLY ANTIQUE RADIO CLASSIFIED Publishing Details Classified Ads Each subscriber is entitled to one 20 word classified ad Antique Radio Classified lUSPS 735-0901 is free of charge per issue. Additional words over the limit published monthly. 12 times yearly. at a suoscrip- are 10C per word. Multiple insertions of same ad are tion rate of $18.00 per year Second Class and discouraged. This is to allow for a varied ad content in each issue. Multiple insertion ads for more than $24.00 First Class mailing rates, by G.B.S. Enter- 2 issues must be run as a display ad. All ads must be prises, 9511 Sunrise Blvd.. 8.1-23. Cleveland, Ohio printed neatly and be received by the 8th of the month 44133. (216) 582-3094. before next issue. See classified ad details elsewhere Second-class postage paid at Cleveland, OH. in this issue. Publisher and Editor Gary B. Schneider. POSTMASTER: Send address changes to address Payment above. Copyright 1986... Antique Radio Classified All ads must be paid for in advance. Make checks payable to Antique Radio Classified. Purpose Antique Radio Classified is published for people in- Subscription Rate volved in the radio collecting hobby. Its purpose is to Subscriptions are available on a yearly basis. $18.00 stimulate growth of the hobby thru the buying, selling. per year Second Class and $24.00 First Class mailing and trading of radios and related items. -
Switched-Mode Power Supply - Wikipedia, the Free Encyclopedia
Switched-mode power supply - Wikipedia, the free encyclopedia Log in / create account Article Discussion Read Edit Switched-mode power supply From Wikipedia, the free encyclopedia For other uses, see Switch (disambiguation). Navigation A switched-mode power supply (switching-mode Main page power supply, SMPS, or simply switcher) is an Contents electronic power supply that incorporates a switching Featured content regulator in order to be highly efficient in the Current events conversion of electrical power. Like other types of Random article power supplies, an SMPS transfers power from a Donate to Wikipedia source like the electrical power grid to a load (e.g., a personal computer) while converting voltage and Interaction current characteristics. An SMPS is usually employed to efficiently provide a regulated output voltage, Help typically at a level different from the input voltage. About Wikipedia Unlike a linear power supply, the pass transistor of a Community portal switching mode supply switches very quickly (typically Recent changes between 50 kHz and 1 MHz) between full-on and full- Interior view of an ATX SMPS: below Contact Wikipedia off states, which minimizes wasted energy. Voltage A: input EMI filtering; A: bridge rectifier; regulation is provided by varying the ratio of on to off B: input filter capacitors; Toolbox time. In contrast, a linear power supply must dissipate Between B and C: primary side heat sink; the excess voltage to regulate the output. This higher C: transformer; What links here Between C and D: secondary side heat sink; efficiency is the chief advantage of a switched-mode Related changes D: output filter coil; power supply. -
National Register of Historic Places Registration Form
_______________________ _____________________________________ En’, IWJI ‘III ‘" 11fl4-XIIH Il,. S-ki United States Department of the Interior NatiQnai Park Service National Register of Historic Places Registration Form 1. Name of Property Instorir name Massje Wireless Station other n;uneAsite number ‘ ‘ Pt]-’ 2. bntion street & nuinber 1300 Frenchtown Road not for publication: citxtown: East Greenwich viciuit N/A state: RI toil ntv Ken Msle: 0 0 3 ZIp isle: 02 8 1 8 3. Classificafion Ownership of Pms’rty: Private Tategorv of Piopertv: Building Nu mnber of flesoiLrtes with] ii Property: - Ton t riInit ii ig No ii 0 nt rihuli ng htHldilgs sites structures objects 1 p Total Number of toiitnhimting res4imrees previously listed in time National Ihgister Name ol related immumltiple property listiuig N/A ___________________________________________________________________ ______________ _______________________________________________________________________________________________________________________ _________________________ USDIiNPS Yil[fl Registration Form Page 2 Property name Nassie Wireless Station, Kent Cty. , East Greenwich, RI 4. StatelFederal Agency Certification As the tlt’signated authority under time National ii istonc Preservation Act of 1986, as amnendeil, I hereby certify that this_x_ nonminatiomi request for tleternii nat ion of eligibility meets the documnemitation standards for registermg pmoiwiies in the Nationi I Register of ii istoric Places and meets the procedural amid professional requ irenien ts set forth in 36 CFI1 Pa.rt. 60. In mmiv opi mm ion, tIme property J nieets does not meet the National Register Cr term. - See continuation sheet. 1. ‘ Gc Signature of certifying official Date State or Feil era I agency a mid himmriLil En umy op i iii u m, the i11 pe rtv meets ltfl’s mot uieet tIme Nat immII legister t-ri te ii a. -
Short Wave Radio
Short Wave Radio A Working Electronic Sculpture Honoring the History of Radio Please note: This radio picks up short wave stations, but for your best satisfaction it will require a little time and attention, both to learn how to operate it and to appreciate the principles and history that it embodies. You’ll find bare-bones instructions on this page and more details inside the notebook. To turn the radio on, rotate the volume control clockwise until you hear a click, then set its dial to 3 or 4. If the radio was not already turned on, you’ll have to wait about 30 seconds for its vacuum tubes to warm up. •Put on the headphones. •Set the radio’s other controls as follows: •RF Gain: Fully clockwise. •Preselector: 1 •Tuning: 20 •Fine Tuning: 5.0 (This works like a clock, only with ten “hours” instead of 12) •Regeneration: 7 (Or advance slowly clockwise from zero until just after the point you hear a louder hiss in the headphones.) •Volume: Set to a comfortable level, usually about 4. Now, slowly adjust the TUNING control back and forth looking for squeals that indicate signals. (The shortwave broadcast band with 31 meter wavelength is located between about 10 and 30 on the dial.) You’ll should find a few unless ionospheric conditions are particularly poor on this day. Leave the TUNING control set on a loud squeal. Then slowly adjust the FINE TUNING to “zero beat.” (You’ll notice as you move the dial across a signal, it starts with a high-pitched note, moving down to a low-pitched or zero note, then back up to high pitch again. -
Antique Radio Charlotte an Annual Conference for Antique and Vintage Radio Collectors and Historians
Antique Radio Charlotte An annual conference for antique and vintage radio collectors and historians. 3rd Bi-annual Charlotte International Cryptologic Symposium Thursday, Friday & Saturday March 24-25-26, 2016 Sponsored by the Carolinas Chapter of the Antique Wireless Association Meet Results CAROLINAS CHAPTER OF THE AWA http://www.cc-awa.org/ PRESIDENT SECRETARY-TREASURER Ron Lawrence Clare Owens P O Box 3015 101 Grassy Ridge Ct. Matthews, NC 28106 Apex NC 27502 704-289-1166 919-363-7608 [email protected] [email protected] VICE PRESIDENT Richard Owens EXECUTIVE COMMITTEE R L Barnett Stephen Brown Kirk Cline Barker Edwards Robert Lozier Chip McFalls EDITORS Barker & Judy Edwards 116 East Front Street Clayton NC 27520 919 553-2330 [email protected] Membership in the Carolinas Chapter of the Antique Wireless Association (CC-AWA) is open to anyone with an interest in old (antique) radios. Anyone who pays registration for the 2016 conference will automatically receive one year’s membership in the Carolinas Chapter of the AWA. This is only chapter membership and does not include membership in the Antique Wireless Association. If you are already a paid member in the chapter, your membership will be extended one year. Any correspondence, including any newsletters that are published, will be distributed electronically. Please make sure that the CC-AWA has a current email address on file. Old Equipment Contest Pictured are the 1st place winners. To view all the winners, please visit our web page at: www.cc-awa.org. HM-Honorable mention No Entries CATEGORY 1 PRE-1912 ELECTRICAL DEVICES NON RADIO No Entries CATEGORY 2 PRE-1920 RECEIVERS & TRANSMITTERS AND WIRE LINE TELEGRAPH ITEMS CATEGORY 3 1920s ERA BROADCAST RECEIVERS A. -
Chrysler Corporation Tunes in with "Transistor-Ized" Music
By Rick Hirsh Chrysler Corporation Tunes in with "Transistor-ized" Music Chrysler Corporation was the "first" car manufacturer, to advertise the use of transistors in its production car models. Chrysler and Philco Corporations had originally developed and produced an all- transistor car radio (Mopar model 914HR) in 1955. This “ground breaking” news was first announced in the Wall Street Journal newspaper on April 28, 1955. And it was an “option” for the new 1956 Chrysler and Imperial car models, that became available in its showrooms starting on October 21, 1955. But, it was short- lived, for Chrysler had decided to discontinue its new all-transistor car radio "option" before the end of 1956, due to poor sales and its expensive manufacturing costs to produce. Some of the advantages of using all-transistors versus tubes for car radios … Instant radio turn-on power versus 30-second warm-up time. Uses 90% less battery power supply. Produces less heat than conventional vacuum tube car radios. Uses no noisy vibrator power supply, which supplies the high-voltage needed for the radio's conventional vacuum tubes and was also the number one radio part to fail. Chrysler Corporation had decided that transistors were still the cutting edge of technology and was the wave of the future. And they had made the decision during the fall of 1956, to go with a newly developed “transistorized-hybrid” (vacuum tubes + transistors) car radio design, for all of its divisions and new 1957 car models. Large vacuum tube manufacturers like Tung-Sol had started to worry about its future, with regards to the newly developed transistor technology that would replace its vacuum tubes in car radios. -
Construction and Operation of a Simple Homemade Radio Receiving Outfit
Construction and Operation of a Simple Homemade Radio Receiving Outfit The 1922 Bureau of Standards publication, Construc- tion and Operation of a Simple Homemade Radio Receiving Outfit [1], is perhaps the best-known of a series of publications on radio intended for the general public at a time when the embryonic radio industry in the U.S. was undergoing exponential growth. While there were a number of earlier experiments with radio broadcasts to the general public, most histori- ans consider the late fall of 1920 to be the beginning of radio broadcasting for entertainment purposes. Pittsburgh, PA, station KDKA, owned by Westinghouse, received its license from the Department of Commerce just in time to broadcast the Harding-Cox presidential election returns. In today’s world where instant global communications are commonplace, it is difficult to appreciate the excitement that this event generated. Fig 1. The crystal radio described in Circular 120. News of the new development spread rapidly, and interest in radio soared. By the end of 1921, new broad- casting stations were springing up all over the country. Radios were selling faster than companies could manu- facture them. The demand for information on this new technology was almost insatiable. The Radio Section of the Bureau of Standards provided measurement know- how to the burgeoning radio industry as well as general information on the new technology to the public. Letters to the Bureau seeking information on radio technology began as a trickle, and then soon became a flood. Answering them became a burden. Circular 120, published in April 1922, began: “Frequent inquiries are received at the Bureau of Standards for information regarding the construction of a simple receiving set which any person can construct in the home from materials which can be easily secured. -
Replacing the Mechanical Vibrator in the DY-88 Power Supply for the GRC-9 Transceiver by Craig Vonilten, N6CAV with Contributions by Tom Murphy W6TOM
Replacing the Mechanical Vibrator in the DY-88 Power Supply for the GRC-9 Transceiver by Craig Vonilten, N6CAV with contributions by Tom Murphy W6TOM As older mechanical vibrators fail (and they will ALL fail at some point) a suitable replacement is needed. I have gone through several different ways of doing this in keeping my DY-88 power supply functional. Initially I did this by repairing the mechanical units (opening and cleaning their contacts), then building my own solid state replacement and finally using ‘kits’ and designs by other amateur radio enthusiasts. All approaches have some merit…but I have settled on an indestructible approach using a small module made by Aurora Design originally intended for restoring commercial automotive radios. Consequently, this article is really more mechanical in nature than it is electrical ‘design’ related. I am using this module because it is incredibly well designed for this application. It has eliminated any desire to “roll my own”. This module is microprocessor controlled. Yes, you read that correctly…it has an onboard microprocessor that provides numerous advantages over traditional designs based on RC timed ‘blind’ switching or 555 timer solutions. With a microprocessor on-board, this module brings some “smarts” to the traditional switching circuit such as: dead-band control, delayed start, soft start, delayed restart, short circuit protection and over-power protection. Better yet…it can help protect downstream devices like the transformer (which would normally be destroyed by a traditional vibrator or solid state module if a buffer capacitor were to fail to a short circuit…not uncommon). -
Extended Call for Papers
A Century of Broadcasting histelcon 2010 The Second Region 8 IEEE Conference on the History of Telecommunications Madrid, Spain 3-5 November 2010 http://www.aeit.es/histelcon2010/ EXTENDED CALL FOR PAPERS Theme and Topics Year 2010 marks a series of historical milestones in relation to the Birth of Broadcasting a hundred years ago. To commemorate this remarkable anniversary, we invite submissions related to this theme in order to be presented as a paper. Other papers describing significant research contributions to the field of History of Information and Communication Technologies are also welcome. The official language of the conference will be English. Topics of interests include, but are not limited to, the following: • Pioneers of Broadcasting, • The Birth of the Broadcasting Business, • Stellar Moments in the History of Broadcasting, • A Century of Radio Regulations, • Radio & TV Standards, • Broadcasting as a Political Instrument, • Development of Radio & TV Technology. Poster and Special Sessions Submissions to organize a poster session on antique radio and radio museums or other related subject are very welcome. In addition, we are also seeking proposals for special sessions. Some suggestions come next: IEEE Life-Members and History Activities, Ham (Amateur) Radio, Pirate Radio, Satellite & Cable Broadcasting, Internet TV & Radio, Broadcasting as Entertainment. With the Sponsored by: collaboration of: A Century of Broadcasting histelcon 2010 The Second Region 8 IEEE Conference on the History of Telecommunications Madrid, Spain 3-5 November 2010 http://www.aeit.es/histelcon2010/ Abstract Submission Interested participants are invited to submit their abstracts for oral or poster presentations to the Conference Secretariat by electronically sending a 500 words abstract, written in English, with a title, the name of the author(s) and affiliation(s) in MS Word format. -
TO the ARCA GAZETTE This Index Covers the Antique Radio Club of America Antique Radio Gazette Through Its Final Edition, Vol
INDEX TO THE ARCA GAZETTE This index covers the Antique Radio Club of America Antique Radio Gazette through its final edition, Vol. 22 No. 2. References to articles are listed in the form of volume-number-page. As an example, to locate information on the Victoreen superhet, a check under "Receivers - Broadcast - Tube" shows "14-3-21." Gazette Vol. 14, No. 3, Page 21 has this article. In the listings, an item of a full page or more is shown with an asterisk. Two asterisks indicate an article of three or more pages. An item cited in this index may vary in size from a passing mention to a major feature. Because even scraps of information may be useful, the citations go to fairly fine detail. Copyright (c) 1992, 1993, 1994, 2015, 2016 Ludwell A. Sibley CONTENTS 1980 Pix ......................................... **31-3-19 Activities Results ......................................*9-4-14 "Ghosts of Radio Past" show **21-4-19 ARCA - Annual Convention............ 1 1981 (Louisville) 1994 (Little Rock) ARCA - General ................................. 1 Results ..........................*9-2-2, *9-2-14 Announcement*21-4-16; insert w/ 22-1 ARCA - Local...................................... 2 Equipment Awards....................*9-2-12 Equipment Awards ............... **22-2-23 General Club News and Meets.......... 2 1982 (Lake Placid) ACTIVITIES - ARCA - GENERAL Collecting............................................ 2 Announcement.................. 9-3-2, 9-4-2 AWA, acquisition by................. **22-2-39 Collections - Personal ........................ 3 Results ..... *10-1-16, *10-2-1, *10-2-14 Awards: Public Museums................................. 3 Equipment Awards..................*10-2-17 Equipment Contests - Criteria 14-2-18, Author Index .......................................... 7 1983 (Charleston) *18-3-6, *20-4-31 Basic Electronics.................................. -
Journal Vol 23-1-1999
• Miracles in Trust b y t h e P e r h a 1n F o u n d a t i o n RESTORATIO;-\ A:-.!D PRESERVATION OF EARLY RADIO C a f o r n a H s o r c a R a d 0 s 0 c e y CHRS Officers and Staff About CHRS Steve Kushman Dale Sanford AJan Voorhees 4233 25th St. I 07 St. Thomas Way 10809 Mcintyre St. The CaHfornia Historical Radio Society San Francisco. CA 94114 Tiburon, CA 94920 Oakland. CA 94605 (CHRS) is a nonprofit corporation chartered in (41 5) 821-7671 (415) 435-6131 (510) 562-3235 the State of California. CHRS was formed in [email protected] [email protected] [email protected] 1974 to promote the restoration and preserva PRESIDENT CHAIRMAN OF THE BOARD WEBSITE CHAIRMAN tion of early radio and broadcasting. Our goal MAIL PICK-UP/ HOTLI E MAILING CHAIRMAN is to provide the opportunity to exchange ideas Stephan Ponek and information on the history of radio, partic Lee Allder Mike Adams 945 Linda Mar Blvd. ularly in the West, with emphasis in collecting, Box 6785 112 Crescent Ct. Pacifica, CA 94044 literature, programs. and the restoration and San Rafael. CA 94903 Scotts Valley. CA 95066 (650) 355-1550 display of early equipment. (4 15) 499-9228 (408) 439-9544 BOARD MEMBER The Jou ma/ of the Society is published and VICE PRESIDENT/ [email protected] furnished free of charge to members. Yearly PUBLICITY EMAIL CHAIRMAN Stephen Sutley membership dues are $20 (U.S. funds). Box 1094 Submissions for the Joumal are always wel Russ Turner Larry Oark Pacifica, CA 94044 come. -
Alignment of AM Superheterodyne Radios
Volume 27, Issue 5 Sept/October 2016 Alignment of AM superheterodyne radios By CRC Member—Gregory Malanowski When you acquire a vintage superheterodyne radio, its type, there is a possibility that the chassis could be dan- resonant circuits are almost always out of alignment and gerously at or close to the power line potential. There- they badly need your intervention. This could be caused fore, install small capacitors, 1000pF/630V in series by several factors, usually a combination of a few of with the signal and the ground wires from the generator. them. The most common is a result of past attempts to restore the sensitivity of the radio, which had usually The first necessary step is tuning the intermediate fre- been a crime committed by quency (If) filters to the the former owner or by factory-recommended fre- some unprofessional repair quency of your receiver. man, who had mindlessly Use a non-ferrite tuning turned back and forth all tool, whether it is a screw- accessible trimming con- driver or a hex socket densers and ferrite cores wrench. inside the coils. This is the most challenging situation, Some manufacturers sug- for the delicate ferrite gest connecting the signal cores had been often se- generator wire to the anode cured using a hard lacquer, of the mixer tube. That is and could have cracked as usually neither safe nor a result of careless em- easy. You can achieve the ploying a metal screwdriv- same results by applying er. Also, the antique trim- the If signal to the antenna ming condensers, with a input while the radio is mica dielectric or a layer of silver evaporated over deli- tuned to the lowest end of the broadcast frequency cate ceramic plates, sometimes break easily.