Silicon ChipMarket Centre - May 1990 SILICON CHIP
  1. Outer Front Cover
  2. Contents
  3. Publisher's Letter: Power lines and the environment: a touchy subject
  4. Feature: Error Correction For Digital Recordings by Phillips
  5. Vintage Radio: Cleaning up the chassis by John Hill
  6. Project: High Energy Ignition For Reluctor Pickups by John Clarke & Leo Simpson
  7. Project: Build A 4-Digit Capacitance Meter by John Clarke & Greg Swain
  8. Feature: Amateur Radio by Garry Cratt, VK2YBX
  9. Project: 16-Channel Mixing Desk; Pt.4 by John Clarke & Leo Simpson
  10. Serviceman's Log: Something old & something new by The TV Serviceman
  11. Project: The Mozzie CW Transceiver by Clive Chamberlain
  12. Feature: Remote Control by Bob Young
  13. Feature: Computer Bits by Jennifer Bonnitcha
  14. Feature: Waveform Generation Using A PC, Pt.3 by Steve Payor
  15. Back Issues
  16. Market Centre
  17. Advertising Index
  18. Subscriptions
  19. Outer Back Cover

This is only a preview of the May 1990 issue of Silicon Chip.

You can view 44 of the 104 pages in the full issue, including the advertisments.

For full access, purchase the issue for $10.00 or subscribe for access to the latest issues.

Articles in this series:
  • Amateur Radio (November 1987)
  • Amateur Radio (December 1987)
  • Amateur Radio (February 1988)
  • Amateur Radio (March 1988)
  • Amateur Radio (April 1988)
  • Amateur Radio (May 1988)
  • Amateur Radio (June 1988)
  • Amateur Radio (July 1988)
  • Amateur Radio (August 1988)
  • Amateur Radio (September 1988)
  • Amateur Radio (October 1988)
  • Amateur Radio (November 1988)
  • Amateur Radio (December 1988)
  • Amateur Radio (January 1989)
  • Amateur Radio (April 1989)
  • Amateur Radio (May 1989)
  • Amateur Radio (June 1989)
  • Amateur Radio (July 1989)
  • Amateur Radio (August 1989)
  • Amateur Radio (September 1989)
  • Amateur Radio (October 1989)
  • Amateur Radio (November 1989)
  • Amateur Radio (December 1989)
  • Amateur Radio (February 1990)
  • Amateur Radio (March 1990)
  • Amateur Radio (April 1990)
  • Amateur Radio (May 1990)
  • Amateur Radio (June 1990)
  • Amateur Radio (July 1990)
  • The "Tube" vs. The Microchip (August 1990)
  • Amateur Radio (September 1990)
  • Amateur Radio (October 1990)
  • Amateur Radio (November 1990)
  • Amateur Radio (December 1990)
  • Amateur Radio (January 1991)
  • Amateur Radio (February 1991)
  • Amateur Radio (March 1991)
  • Amateur Radio (April 1991)
  • Amateur Radio (May 1991)
  • Amateur Radio (June 1991)
  • Amateur Radio (July 1991)
  • Amateur Radio (August 1991)
  • Amateur Radio (September 1991)
  • Amateur Radio (October 1991)
  • Amateur Radio (November 1991)
  • Amateur Radio (January 1992)
  • Amateur Radio (February 1992)
  • Amateur Radio (March 1992)
  • Amateur Radio (July 1992)
  • Amateur Radio (August 1992)
  • Amateur Radio (September 1992)
  • Amateur Radio (October 1992)
  • Amateur Radio (November 1992)
  • Amateur Radio (January 1993)
  • Amateur Radio (March 1993)
  • Amateur Radio (May 1993)
  • Amateur Radio (June 1993)
  • Amateur Radio (July 1993)
  • Amateur Radio (August 1993)
  • Amateur Radio (September 1993)
  • Amateur Radio (October 1993)
  • Amateur Radio (December 1993)
  • Amateur Radio (February 1994)
  • Amateur Radio (March 1994)
  • Amateur Radio (May 1994)
  • Amateur Radio (June 1994)
  • Amateur Radio (September 1994)
  • Amateur Radio (December 1994)
  • Amateur Radio (January 1995)
  • CB Radio Can Now Transmit Data (March 2001)
  • What's On Offer In "Walkie Talkies" (March 2001)
  • Stressless Wireless (October 2004)
  • “Degen” Synthesised HF Communications Receiver (January 2007)
  • WiNRADiO: Marrying A Radio Receiver To A PC (January 2007)
  • PICAXE-08M 433MHz Data Transceiver (October 2008)
  • Half-Duplex With HopeRF’s HM-TR UHF Transceivers (April 2009)
  • Dorji 433MHz Wireless Data Modules (January 2012)
Articles in this series:
  • 16-Channel Mixing Desk (February 1990)
  • 16-Channel Mixing Desk (March 1990)
  • 16-Channel Mixing Desk, Pt.3 (April 1990)
  • 16-Channel Mixing Desk; Pt.4 (May 1990)
  • Modifications To The 16-Channel Mixer (November 1990)
Articles in this series:
  • Remote Control (October 1989)
  • Remote Control (November 1989)
  • Remote Control (December 1989)
  • Remote Control (January 1990)
  • Remote Control (February 1990)
  • Remote Control (March 1990)
  • Remote Control (April 1990)
  • Remote Control (May 1990)
  • Remote Control (June 1990)
  • Remote Control (August 1990)
  • Remote Control (September 1990)
  • Remote Control (October 1990)
  • Remote Control (November 1990)
  • Remote Control (December 1990)
  • Remote Control (April 1991)
  • Remote Control (July 1991)
  • Remote Control (August 1991)
  • Remote Control (October 1991)
  • Remote Control (April 1992)
  • Remote Control (April 1993)
  • Remote Control (November 1993)
  • Remote Control (December 1993)
  • Remote Control (January 1994)
  • Remote Control (June 1994)
  • Remote Control (January 1995)
  • Remote Control (April 1995)
  • Remote Control (May 1995)
  • Remote Control (July 1995)
  • Remote Control (November 1995)
  • Remote Control (December 1995)
Articles in this series:
  • Computer Bits (May 1990)
  • Computer Bits (June 1990)
  • Computer Bits (July 1990)
  • Computer Bits (August 1990)
  • Computer Bits (September 1990)
Articles in this series:
  • Computer Bits (February 1990)
  • Computer Bits (March 1990)
  • Waveform Generation Using A PC, Pt.3 (May 1990)
  • Waveform Generation Using A PC, Pt.4 (July 1990)
Cash in your surplus gear. Advertise it here in Silicon Chip. MEMORY CHIPS CLASSIFIED ADVERTISING COUPON 46 Advertising rates for this page: Classified ads - $7 .00 for up to 15 words plus cents for each additional word; Display ads (casual rate) - $20 per column centimetre (max. 10cm). Closing date: five weeks prior to month of sale. If you use a PO Box number, you must include your permanent address and phone number for our files. We cannot accept ads submitted without this information. To run your own classified ad, put one word on each of the lines below and send this form with your payment to: Silicon Chip Classifieds, PO Box 139, Collaroy Beach, NSW 2097. Prices at February ht, 1990 Speed Chip type SIMMS 9 9 (MACS) 8 (IBM) 9 SIPPS 9 x 256 9 x 1Mb DIP 411000 (1Mb) 414256 (1 Mb) 41256 41464 (256) 4164 ZIP 414256 (1 Mb) 41256 411000 (1Mb) 4400 (4Mb) PLEASE PRINT EACH WORD SEPARATELY, IN BLOCK LETTERS 2 6 4 3 5 x 256 x 1Mb x 1 Mb x 1 Mb HP PS2 Sales Tax 20% 7 8 10 9 120ns 100ns B0ns Prices (excluding tax) 40.00 48.00 128.00 132.00 122.00 130.00 165.00 44.00 52.00 132.00 136.00 12.70 13.40 13.80 14.60 3.50 4.10 4.40 4.25 4.60 2.30 2.50 2.70 4.00 16.00 Overnight delivery 18.00 5.00 18.00 - 20.00 150.00 Credit cards welcome DISCOUNTS FOR DEALERS Phone for pricing on 70ns, 80ns, PS2, Compaq, and NTX 12 11 13 14 15 ($7 00) PELHAM Tel (02) 427 0011 - Fax (02) 428 5460 16 ($7.40) 17 ($7.80) 18 ($8.20) 19 ($860) 20 ($9 00) 21 ($9.40) 22 ($9.80) 23 ($10 20) 24 ($10.60) 25 ($11.00) FIX-A-KIT NO CHARGE FOR KITS THAT CAN'T BE REPAIRED 3 MONTHS WARRANTY ON REPAIRS CONSTRUCTION AVAILABLE Name Street Postcode Suburb/Town Enclosed is my cheque or money order for $ Bankcard D Visa Card D MasterCard or please debit my D Card No I I Signature ... ANTIQUE RADIO ANTIQUE RADIO RESTORATIONS. Your one-stop electronic repair shop. Specialising in restoring vintage radios including chassis rewiring , quality new parts, valves, valve sockets, speakers, transformers, cabinet restoration. Quality secondhand radio dials & parts for most brands & models. About 400 radios in stock for restoration & parts. Every restored wireless is covered by a 2-year warranty on parts & service . French polishing of timber cabinets available. Vintage car radios in valve & transistor types available for restoration. Repairs done on tape decks, amplifiers, TVs & videos. Open Sat. 1Oam-5pm; Sun. 12.30-5pm. 109 102 $20 PER HOUR LABOUR SILICON CHIP Card expiry date ...... ./ ..... .. . Cann St, Bass Hill, NSW 2197. Phone (02) 645 3173 BH or (02) 726 1613 AH. HYCAL INSTRUMENTS DESIGN, MANUFACTURE, REPAIR OF ELECTRONIC EQUIPMENT (02) 633 5897 PUBLIC DOMAIN & shareware software for IBM & compatibles . Catalog disc $4 .00 on 5.25-inch 360K or 3.5-inch 720K disc. Also TVREPAIR.TXT which covers faults in most popular brands. It can save hours of work. Just $29 inc. p/post. Martins Television Service, PO Box 1013, Taree , NSW 2430. FOR SALE COMPONENTS: 100,000 3300pF 50V miniature ceramic capacitors $300; boxes of 500 4 70pF, 680pF 3kV and 330pF, 220pF 1kV - $25 each; grain oriented steel sheet, 1 ,OOOkg, each 290 x 1 20mm & 250 x 95mm - $1 000 the lot; boxes of 800 .01µF monolithic capacitors, 1OOV, 0.2mm spacing - $25 per box; brand new Murata disc capacitors, 1OkV working, 30kVA, size 110mm x 15mm - $25 each. AvComm Pty Ltd, PO Box 386, Northbridge, 2063 . Phone (02) 9497417. TOSHIBA T3100 co-proGessor kit. This piggy-back board enables the fitting of an 80287-8 to the early T3100. Two types available, solder in & plug in. Solder version $250.00. Plug-in version $375.00. Import Technologies (07) 372 5138. WOW! DRAM PRICES have dropped. Now is the right time to build your own parallel printer buffer. Advertised since January 1985. Featured in AEM in March 1987 and SILICON CHIP in October 1989. Over 2500 units sold. r~-------------·- -------, BINDERS & SUBSCRIPTION COUPON To: Freepost 25, Silicon Chip Publications, PO Box 139 Collaroy Beach, NSW 2097, Australia. NO POSTAGE STAMP REQUIRED IN AUSTRALIA. D New subscription Start in _ _ _ _ _ _ __ D Renewal 0 Please send me_ ___ SILICON CHIP binder(s) at $A 11 .95 plus $A3 p&p each (NZ p&p $A6). Name _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __ (PLEASE PRINT) Street._ __ _ __ __ _ _ _ _ _ _ _ _ _ __ _ _ __ Suburb/town _ _ _ _ _ _ _ _ _ _ _ _ Postcode_ _ _ _ __ Australia 1 year (12 issues) D $A42 NZ & PNG (airmail) Overseas surface mail Overseas airmail D $A65 D $A62 D $A 120 2 years (24 issues) D $A84 D $A130 D $A130 D $A240 Enclosed is my cheque/money order for $ _ _ _ _ or please debit my D Bankcard D Visa Card D MasterCard Signature_ _ _ _ __ __ _ _ _ _ Card expiry date_~-- Same kit, just updated. Now SK-1 M. No obligation. For a free catalog send a 41 c stamp to Don McKenzie, 29 Ellesmere Crescent, Tullamarine 3043. BELT KITS FOR VCRs. Please supply brand & model number & $12.00 for each kit required. Prompt dispatch assured. James Cotterill, PO Box 44 , Farrer, ACT 2607. SOLAREX SOLAR PANELS & accessories at trade prices. Send SAE to Solar Technology, PO Box 1129, Esperance, WA 6450. SATFAX: NOAA, METEOR & GMS weather satellite picture receiving program for IBM XT/AT. Displays in 64 colours. Needs EGA colour monitor & card and "Weather Fax" PC card. $45 plus $3 postage. RADFAX2: HF WEATHER FAX, Morse & RTTY receiving program for IBM XT/AT. Needs CGA, SSB HF, FSK/tone decoder. Also "RF2HERC" & "RF2EGA", same as RADFAX2 but suitable for Hercules & EGA cards respectively. $35 plus $3 postage. All programs are on 5.25-inch 360K or 3.5-inch disc & include full documentation. Only from M. Delahunty, 42 Villiers St, New Farm, Qld 4005. Phone (07) 358 2785. LOGIC ANALYSER. Gould Instruments K40 stand alone analyser. Eight nonvolatile memories, 7-inch CRT, 4 x 2K sample memories, 2 x 16-channel, probes up to 1 00MHz, asynchronous capture. Weighs 7.7kg. $1345.00. Import Technologies (07) 372 5138. EPSON P80 PORT ABLE battery rechargeable SO-column printer. Serial interface. Very compact & light. 1 .1 kg . Uses normal or thermal paper. $1 7 5 . Import Technologies (07) 372 5138. NEW SERVICE - PARTS location and supply. Want just that part of a kit or just a hard to find part? We will find and supply them for you . No search fees. Send SSAE with requirements to Part Search, PO Box 491, Noarlunga Centre, SA 5168. Phone (08) 382 8919. TOSHIBA LCD SCREEN. Originally to suit T1500 desktop. 240 x 180mm, Advertising Index Access Communications ... ...... 3 Allied Capacitors .. ....... ..... .. .. 45 Altronics .......... ......... ..... 56-59 Arista ... .. ....... .. ... ......... ... .... 23 Aust. Test & Measurement .... 73 AvComm Pty Ltd ...... ...... ...... 63 Board Solutions ..... .. ....... 12, 13 Dauner Electronics ..... .... ... .... 89 David Reid Electronics ... ... ... IFC Dick Smith Electronics ... .. .. .. 6, 7 Electronic Solutions ........ 46,4 7 Elmeasco ... ... ....... ... .... .. 17,87 Force Electronics ......... .... ... 41 Geoff Wood Electronics .. ...... 51 Harbuch Electronics ... .. ... 8 7, 89 Hycal Instruments .. ............ 1 02 Jaycar Electronics 26-29, 78-81 Jiloa ........ ... ........................ 11 Novacastrian Electronics . . OBC PC Marketplace ... ... .... .. ... ... IBC Pelham ....... .. ...... .. .... .. .. .. .. 102 RCS Radio ......... ........ ... .... .. 64 Resurrection Radio ....... ... ...... 11 Rod Irving Electronics ..... 90,91 Sheridan Electronics ........ .... 85 PC Boards Printed circuit boards for SILICON CHIP projects are made by: • RCS Radio Pty Ltd, 651 Forest Rd, Bexley, NSW 2207. Phone (02) 587 3491. • Jemal Products, 5 Forge St, Welshpool , WA 6106. Phone (09) 350 5555 . • Marday Services, PO Box 19-189, Avondale, Auckland, NZ. Phone 88 5730. • Electronic Toy Services, 2/ 111 Glynville Drive, Hackham West, SA 5163. Phone (08) 382 8919. 640 x 200 pixels. Uses 5V supply & TTL drive signals. Suit experimenter. $150. Import Technologies (07) 372 5138. BWD OSCILLOSCOPE, 35MHz Dual Trace Model 830. Brand new - never used. Super bargain at $800. Contact Claude on (086) 28 2435 anytime. ALL TYPES OF ASTRONOMICAL telescopes & related accessories, new & secondhand. Best prices in Australia. Contact Astronomy & Electronics Centre, PO Box 45, Cleve, SA 5640. Phone 086 28 2435. MAY 1990 103