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RADIO TELEVISION and HOBBIES JUNE, 1964 Vol. 26

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RADIO TELEVISION and HOBBIES JUNE, 1964 Vol. 26 JUNE, 1964 RADIO Vol. 26 No. 3 RADIO, TELEVISION, TELEVISION HI Fl, ELECTRONICS, and HOBBIES AMATEUR RADIO, POPULAR SCIENCE. HOBBIES. % ■ s ■J op. • p V 1 \ h E m < H m $ 5 5C v. s: s. u V'. arm * ■C. 'A. - A " - H ? n m r. % % & i I - > PAGE II RADIO, TELEVISION & HOBBIES JUNE, 1964 Vtt1 /S ^ SEMI-PROFESSIONAL TAPE RECORDER 505R 4-TRACK STEREO AND MONAURAL THE LATEST IN *- TAPE RECORDERS 505R Tape Recorder only £270 + 12J% Sales Tax 505R Complete with speakers and output amplifiers, £350 + 12i% Sales Tax. m The TEAC 505R is a 2-speed, Semi-Professional, high- FEATURES quality tape recorder which will record and reproduce Tape Speeds V/t and 3% ips 4-track stereo and 4-track monaural, as well as reproduce Heads 4 Pre-amp 4 valves per channel 2-track stereo and monaural. It is fitted with extra heads Frequency 30 to 16,000 c/s for 3% ips to permit instant monitoring from the tape, or by the Response 30 to 18,000 c/s for T'/z ips flick of switch to monitoring from the sound source. Like Signal/Noise Ratio Better than 50 db professional machines, it is fitted with three hysteresis Wow and Less than 0.15% at 7.5 ips Flutter Less than 0.25% at 3% ips synchronous motors, giving individual drives for capstan, Inputs 2 Microphone and 2 Line take-up and rewind. A special feature, "Reverse Auto- Input Microphone 0.5 Megohm, unbal. matic," enables the previously recorded track to be Impedances Line 0.25 Megohm, unbal. played back automatically after the finish of one track Output IV. from cathode follower without rewinding the tape. Twin V.U. meters permit Meter Indications Source or tape output individual monitoring of each channel on stereo either Monitoring From source or tape from source or tape. A mixing circuit enables microphone Rewind and Fast Forward and line inputs to be superimposed on one another. A 45 sees, for 1,200' Dimensions IB'/V W, 14'/." H, 8'/2"D tape footage counter and tape-break switch are fitted. Weight Approx. 37 lb. The TEAC 505R is a machine with that little extra for Power 240V., 50 cycle the connoisseur or for those requiring a machine for professional use. THE AMALGAMATED WIRELESS AUDIO CENTRE (AUSTRALASIA) LIMITED 72 Clarence Street SYDNEY. PHONE 2 0233, EXT. 360. PrlnUd <nd publWud by Sungravurt Ply. Limilad, of Mantmora Avanua, Roiabary al Manlmora Avanua, Koiabary. AUSTRALIA'S NATIONAL ELECTRONICS JOURNAL ItADIO, TELEVISION mid HOBBIES ABC CERTIFIED CIRCULATION IN EXCESS OF 41,000 Volume 26, Number 3 June, 1964 u Editor: SHADOW" LICENSING NEVILLE WILLIAMS /"'OADED into action by repeated complaints M.I.R.i.E. (Aust.) (VK2XV). of malpractice, various groups in the radio- Technical Editor; television service industry have recently been ex- PHILIP WATSON (VKJZPW) ploring means of restoring public confidence by A.M.I.R.E.E. (Aust.). identifying, accrediting or licensing individual Technical Staff; servicemen. JAMIESON ROWE 6.Sc. (Tech.) Grad. I.R.E.E. (Aust.) One such prominent group in Victoria, the KEITH JEFFCOAT (VKJBX) "Electrical & Electronic Servicemen's Licensing KEITH WOODWARD (VK2IAU) Committee," has issued a circular indicating that JOHN DAVIDSON (ViarjE) their planning is now complete and that they are ROBERT FLYNN ready to process applications and issue "volun- tary" servicing licences. They state that it is not Advertising: their intention to deprive any practising service- SELWYN SAYERS, Mgr. man of his current livelihood and that "unquali- BILL SUMMONS, Rep. Sydney fied but operative servicemen may continue work- GIL O'NEILL, Rep. Melb. ing in the industry under a temporary permit." Circulation; It is not surprising that this last sentence has W. CUMMING, Mgr. evoked a reaction . "how very, very generous of them." Personally I have no reason to doubt the motives of this committee Subscription Rates; but I do have serious reservations about its apparently precipitate approach. C'vealth, FIJI, N. Guinea, The point is that this committee, in common with other such groups, United Kingdom and British Dominions £A2 p.a. has no present legal standing. It cannot justifiably talk about "licensing" Foreign CA2/I0/- p.o. and certainly not about permitting people to continue in the industry on a "temporary" basis. Even without the legal implications, this last phrase Editorial Offices: 12th Floor, 235-243 Jones St., presents difficulty enough. How temporary? Until they die, or must Broadway, Sydney. Phono 2-0944. servicemen, under pain of ultimate exclusion, go back to learn at a desk Ext. 2531, 2525-6-7. what they've already learned in the field? Advertising Offices: There is another important aspect of this matter. If it is all right Blh Floor, 235-243 Jone. St., for one non-government group to issue "licences" and "permits," then Broadway, Sydney. Phone 2-0944, surely it is all right for any other to do likewise. The pattern is being Ext. 2931, 2508, 2510. set for opposition groups to issue their own licences, their own permits Circulation Dept.: and their own identifying photographs, which can be as impressive in 9th Floor, 235-243 Jones St., Broadway, Sydney. Phone 2-0944. appearance as the occasion demands. This puts the whole thing right Ext. 2505, 2509. back where it started, except that the public will be called upon to evalu- ate rival documents as well as rival servicemen! Postal Address: Box 2728, G.P.O., Sydney. (Re Meanwhile those individuals who are disinclined to conform to "un- technical queries, see "Answers official officialdom" will presumably suffer, because they lack documents To Correspondents" page.) which they are not legally required to hold. -Melbourne Office: "Radio, Television and Hobbies" has no special stake in the question 392 Little Collins St. Phone of licensing—either for it or against it. It certainly has no reason to op- 67-8131. pose any group activity aimed at stamping out malpractice. However, it does believe that there should be only one authority by which licences Cover Picture: should be issued—or seem to be issued—namely the Government itself. The aircraft industry might appear to bo quite distinct from the electronics industry, yet the two are becoming highly interdependant. Sig- nificantly, this nest of pow- erful jet motors was photo- graphed at the power plant factory of the General Electric Company at Evendale, Ohio, In This Issue: U.S.A. As a matter of interest, aircraft style jet turbines are The Automatic Factory 4 20,000 Ohms/Volt Multimeter 56 proving their usefulness for power generation, because of Colour Flight Simulation 9 Basic Radio Coursa 61 their ability to be put Into Welding Hoir-Sixed Wires II A Reader Built It 70 operation at short notice to Telegraphy — Part Three 12 Audio Topics 75 meet heavy peak loads. Review—Probing Dolphin Classical Review 77 Speech 17 intarctate Dlitrlbutors: Variety Fore 81 Distributed In N.S.W. by Sungravurt Ply. Review—Medical "Pod" 19 Trade Reviews, Releases 89 Ltd.. Mejitmoro Avenue, Rotebery. N.S.W.; in Victoria by Sungravure Ply. Scientific and Industrial News 21 Amateur Band News, Notes 93 Ltd., 392 Little CoIIIqs St., Melbourne; TV I Problems—Part Two 28 ' In South Australia by Sungravure Pty. Listening Around the World 101 Ltd., 104 Currlo St., Adelaide; In Western More About Transistor Ignition 33 Answers to Correspondents __ 105 Australia by Western Press; In Queeni* land by Gordon and Gotch The Serviceman Who Tells -- 37 Book Reviews 109 (A/asia) Ltd.; in Now" Zea- land by Truth (N.Z.) Ltd; In A Simple Mantel Set 41 Classified Advertisements 111 Tasmania by Davies Bros. « Let's Buy An Argument 51 Index to Advertisers 112 Ltd.; "Mercury," Hobart. ■ INSTROL- PLAYMASTER .^.■u -u1, wU Jii NOS. 106 AND 107 COMBINED STEREOPHONIC AMPLIFIER-TUNERS Ho. 106 "New Look" case and engraved label V-VV-- . V ^ This outstanding design is the result of a combination of Unit No. 4 Amplifier and Program Source No. 2 Amplifier. The Instrol dial assembly used in both 106 P L .A Y M a s T E -R-— and 107 incorporates the main call signs from all States plus Kilocycles. The "New Look" case features a smart, glossy, smooth hood with rounded corners. The body of- the case is the latest baked wrinkle finish enamel. Price; Complete Kit of Parts £50/10/- Built and Tested £60/18/- (Deduct £3 if outside case not required.) If required in "Standard" case with anodised label, deduct £2/5/-. SPECIAL PARTS AVAILABLE SEPARATELY No. 107 with "Standard" case and anodised label "New Look" Box, chassis, panel and brackets £6 0 0 The latest Playmaster design, which is virtually a com- (Postage 8/ extra) bination of Unit No. 3 Amplifier and Program Source Standard Box, chassis, panel and brackets .. £4 12 0 No. 2 Tuner, (Postage 8/- extra) Price: De Luxe Etched Label (gold/black letters) .. £2 5 0 Complete kit of parts £40 18 0 (Postage 1/- extra) Built and tested £51 5 0 Anodised Label (gold/black letters) £1 8 0 Extra for "New Look" case and engraved (Postage 1/- extra) label £2 5 0 Set of 6 brown/gold knobs £1 0 0 Extra for 2 Magnavox Electrostatic (Postage 1 /- extra) Tweeters with associated parts (not Complete dial kit, including glass, assembly flex) £5 18 0 instructions, back plate, etc £1 15 0 (For cabinet mounting, deduct £2 if ouside case not (Postage 3/- extra) required.) A Complete range of INSTROL - PLAYMASTER THE INSTROL PLAYHASTER HI-FI STEREO EQUIPMENT PROGRAM SOURCE No. 2 TUNER Price: Kit of Parts £16/18/0. Built and tested £26/0/0. Instrol-Playmaster offers you a complete range of highest quality audio equipment to THE INSTROl-PLAYMASTER i* the original "R.
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