ETI 1981-12 December.Pdf
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DEC. 1981 $i.95* NZ $2.50 ELECTROÍ°4>4 31 4%,/14 re, 0% INTERNATIONAIjSO4.TODAY ;JO W ' d ° . ro \ \ \ VsQ,?, \ . q \ .1\ ' . ®. e ,. ..d , . --- -- 0GM P ¡1 f100 boar r: Tai . J Par-tic lele The average hi-fi designer versus the human ear. The human ear were tired of comprom forms part of a sound ise, Vector Research receiving system that represents a new outperforms the best standard in high fidelity audio equipment excellence. known to science. Discussing the Capable of inter- Vector VRX 9000, pret ing a dynamic EJ Stereo Review states range of 120db or 10 "The receiver surpassed octaves, it has double virtually every one of its the capability of any performance specific man made electronic ations ... it sounds equipment. 1' as good as it looks,which is a The ear can 1, saying lot..." discern direction, High Fidelity coloration and musical states "a receiver with within a complex detail - , such sophisticated per rendition of a 50 piece formance and functions orchestra in a manner demands attention." no electronic equip Popular Electronics ment is able to do. on the Vector VCX 600 It is, in short, a rt cassette deck, "Lower sophisticated piece of Flutter readings than equipment that should those of the VCX 600 represent the most are hard to find .. stimulat ing challenge to any designer of while not cheap, it affords excellent value." audio equipment. Hi-Fi Buyer's Review sums up. Unfortunately it's a challenge that's "Vector Research is a newcomer to largely ignored. Which is why in most stereo the audio scene, but if the VCX 600 is any guide, this company should be very successful." Ic r4- --- If then you are an audiophile whose interest goes beyond famous names and shiny moo o rusorcyur sor .r._ _ knobs then you owe it to yourself to learn o - > 7 t1 l g - , more about Vector Research. oaroMe~ rDear V. R., In my book, beauty is in theear a>t' w of the beholder. Send me the test reports : y .8" and the name of my nearest stockist. OA/ . -r.:,. J. Name C ó Address systems handling power and volume are Postcode substituted for subtlety and frequency Keio International Pty. Ltd. response. Vector Research however is one 198 Normanby Road, South Melbourne 3205. of the few exceptions. Developed by a team telephone: (03) 643546. of highly experienced audio engineers who Lo4MET! Vector Research. A fraction better than excellent. Registered by Australia Post - Publication No. NI3P0407 No. 0013-5216 ELECTRONICS ISSN TODAY INTERNATIONAL Well, it has been an eventful year for us here at ETI. We put our best foot forward - project wise - right at the start by commencing the Series 5000 hi-fi projects with the QUICK INDEX 100 W MOSFET stereo amplifier featuring performance unrivalled by any published project - or commercially available amp. In February we became the first magazine in the world to review loudspeakers using spectral decay analysis - thanks to the work of FEATURES Louis Challis. Now we can measure those subtleties you can hear. In March we exposed the fallibility of police speed radars with a detailed examination of their workings never previously seen in the technical press. April was our tenth birthday issue - and the biggest selling issue for many years! In 8 SUPERFET is here! May we featured a technical review of research work carried out on the Shroud of Turin 14 Particle Beam Fusion following examination of it by an international scientific team in October 1978. It was 67 OSCAR 9 Flies! the first such technical review published worldwide, and we gained an enormous 110 WIN a System 80 - Contest amount of attention from the general media as a result. 154 Dregs In June we launched Hobby Electronics which, disappointingly, we had to discontinue as a monthly publication in November. We also launched COMDEC, a computer magazine for business people - which gained immediate success. You win PROJECTS & TECHNICAL some, you lose some. In July we commenced the second stage of the Series 5000 projects with the 26 824/825: Slot Car Controllers introduction of the Stereo Control Preamp, since widely acclaimed. September saw the 37 159: Expanded Scale Voltmeter start of construction of the long-awaited Learners' Microcomputer for the first time, a - 91 685: 2650 Computer on S100 truly low-cost computer project aimed at those who want to get into microcomputing 42 Lab Notes: The LM396 10A Reg. without boiling their brain cells or breaking the bank. October stood out, not only because David Tilbrook appeared on the front cover, but 54 Ideas For Experimenters for the ZX81 contest, which attracted what seems to be the greatest number of entries 62 Shoparound of any contest we've ever run! Results next issue. The November issue represented a 147 Printed Circuit Artwork, etc. 'first' for us - but maybe you didn't notice. The cover featured silver! That's real silver in the ink! Stash those precious copies away, there's about three cents worth on each cover - you might make a killing on the silver market when the price rises again! COMPUTING TODAY This month we continue our support of the hobby computerist with another in our series of S100 computer projects - the ETI-685. And there's more to come. 73 IBM Helps the Deaf Well, so much for the year in review. Next year? That would be telling. Suffice to say 76 Printout - News and Views we not only plan to continue our high standard of projects, features and reviews but 86 Newton's Cool -a game we'll introduce a few new things as well. 91 685: 2650 Computer on S100 We extend to our readers and advertisers best wishes of the season and trust that 110 System 80 to Win! Contest have - you a prosperous, exciting new year. 118 Sorcerer Keyboard Beeper SIGHT & SOUND 127 Blank Tape Levy - Inquiry? 132 Sight & Sound News 140 Quad's New Electrostatics 150 Sansui SE -8 Equaliser Review GENERAL 8 News Digest 69 Letters 66 ARRL Books- low prices! 114 Babani Books - on special! Roger Harrison 148 Mini -Mart- Readers' Adverts Editor 105 ETI Services °J! 4f*:? fl ETI December 1981 - 3 ELECTRONICS TODAY Ampex 138 Abacus 90 IaTERNATI NAL Australian Source r 81 Applied Technology 101 Altronics 22-23 Adaptive Electronics 113 Archive Computers 116 mel .W'v 4 J' Arena 133 Acoustic Foundry 128 ELECTRO,r' Anderson Digital 88 47 TODAY G, All Electronic Components o AED 89 INTERNATIONAUn Ampec 129 eti Audio Engineers 142 ry Auditec 136 fIOT CAR A8RSoanar 44 Atram 139 COnTROIIERs ; Bishop Graphics 50 Bright Star Crystals 10 , Best Vision 29 Boffin 125 r Bose 126 Consolidated Marketing 44,45 CAS.H.Computers 112,125 L, CP/M Data 112 PARTICLE BEAM FUSION 14 Computallor 117 Could particle beam Computer Country 82 '._.f fusion supersede the fission Computerware 125 N TER processes of present-day nuclear reactors to Customized Technology 78 board provide the answer to world energy requirements? Cleftronics 143 Brian Dance investigates. Convoy 134,137,153 A look Dick Smith 6 16.17,40-41,56-57, IN IQUA_D'S NYW /,, 59,61,63,64,71,74,75,108,121,143 - ( [A3 Í1 --Particle David Reid 24 Danish HI -Fi 139 Direct Comp. Retail 106 Electronic Agencies 25 Elmeasco 7 ua.,.,e., ., , , .numunnunu. Ellistronics 124 Slot cars are fun! ... for kids of all ages. Jonathan Elsema 125 Scott, together with Corey and Jamye Harrison, Emona 125 Electromark 60 proved the point for our photographers by Energy Control 122 converting the studio into a miniature Le Mans Electrocraft 60 (complete with sound effects from the side of the . f i . rr r¡.¡.. Electronic Concepts 123 ¡. mouth and odd staff making crowd noises to egg Emac 145 You join in the fun, commencing Electronic Developments 21 them on). too can Fairlight 62 page 26. Hagemeyer OBC Imark 60 Imagineering 78 Jaycar 36,48,68 'Recommended retail price only Javelin 13 ** -****9 Jensen 65 Kitparts 90 WIN A SYSTEM 80 CONTEST 110 Looky Video 122 - Complete a simple crossword and write a Microtrix 84 short Magnetic Media 90 essay, and a Dick Smith System 80 personal Micro80 72 computer could be yours. Marantz 130 Mag Video 131 McWilliams 146 Nula 116 North Point Hi-fi 136 OZmail 89 Printed Circuits 12 Pre -Pak 52-53 NEWS DIGEST 8 O.T. Computers 120 SUPERFET arrives; Hobbyist toolkits; How not to Reimer 137,153 solder your fingers; Rod Irving 35,57,107 Something terrible happened in Radio Despatch 21 space; Ideas for Christmas; etc. Royston 128 824/825: SLOT CAR Radio Parts 116 COMMUNICATIONS NEWS 67 RMIT 128 CONTROLLERS 26 Sansui 149 Oscar 9 flies; Study of radio -induced changes in Hours of fun for electronics enthusiasts and their S.I. Microcomputers 79 ionosphere; and more. families - invest in a cheap slot car set and turn it System Software 109 into your version of Le Mans! For once your family Software Source 122 PRINTOUT 76 won't moan about your hobby! Sheridan Electronics 55 Fluke microsystem SME Electronics 120 troubleshooter; ComputerLand Stolmack 143 on the Gold Coast; TRS-80 hotline; Apple II Users' 159: EXPANDED SCALE Semiconductor Imports 70 Guide - book review; Sanyo display screen easy Sony IBC on the eyes; etc. VOLTMETER 37 Scope 70 This' simple, low-cost Instrument can be built into TCG 109 power supplies or used as a portable or fixed battery TCT Micro 106 SIGHT & SOUND 127 condition monitoring meter. Vicom 11 Blank tape levy inquiry; ITT digital television; four- Vanli IFC hour VHS cassettes; National Panasonic low -light Warburton Franks 85 Camera; Will the videodisc survive?; etc.