Silicon ChipMarket Centre - June 1992 SILICON CHIP
  1. Outer Front Cover
  2. Contents
  3. Publisher's Letter: The oscilloscope - the everyday time machine
  4. Vintage Radio: The basics of receiver alignment; Pt.3 by John Hill
  5. Project: Multi-Station Headset Intercom; Pt.1 by Marque Crozman
  6. Project: Infrared Remote Control For Model Railroads, Pt.3 by Leo Simpson & John Clarke
  7. Feature: Computer Bits by Paul Lynch
  8. Serviceman's Log: From a snack to a 3-course meal! by The TV Serviceman
  9. Feature: SuperMac - Video Editing On The Small Screen by Darren Yates
  10. Feature: What's New In Oscilloscopes by Leo Simpson
  11. Subscriptions
  12. Project: Video Switcher For Camcorders & VCRs by John Clarke
  13. Project: Build A 15-Watt 12-240V Inverter by John Clarke & Darren Yates
  14. Back Issues
  15. Order Form
  16. Market Centre
  17. Advertising Index
  18. Outer Back Cover

This is only a preview of the June 1992 issue of Silicon Chip.

You can view 46 of the 96 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:
  • The basics of receiver alignment (April 1992)
  • The basics of receiver alignment; Pt.2 (May 1992)
  • The basics of receiver alignment; Pt.3 (June 1992)
Items relevant to "Multi-Station Headset Intercom; Pt.1":
  • Multi-Station Headset Intercom PCB [01302921] (AUD $7.50)
  • Multi-station Headset Intercom PCB pattern (PDF download) [01302921] (Free)
  • Silicon Chip article scan, June 1992 - Multi-Station Headset Intercom Pt1 (AUD $10.00)
Articles in this series:
  • Multi-Station Headset Intercom; Pt.1 (June 1992)
  • Multi-Station Headset Intercom; Pt.2 (July 1992)
Articles in this series:
  • Infrared Remote Control For Model Railroads, Pt.1 (April 1992)
  • Infrared Remote Control For Model Railroads, Pt.2 (May 1992)
  • Infrared Remote Control For Model Railroads, Pt.3 (June 1992)
Articles in this series:
  • Computer Bits (July 1989)
  • Computer Bits (August 1989)
  • Computer Bits (September 1989)
  • Computer Bits (October 1989)
  • Computer Bits (November 1989)
  • Computer Bits (January 1990)
  • Computer Bits (April 1990)
  • Computer Bits (October 1990)
  • Computer Bits (November 1990)
  • Computer Bits (December 1990)
  • Computer Bits (January 1991)
  • Computer Bits (February 1991)
  • Computer Bits (March 1991)
  • Computer Bits (April 1991)
  • Computer Bits (May 1991)
  • Computer Bits (June 1991)
  • Computer Bits (July 1991)
  • Computer Bits (August 1991)
  • Computer Bits (September 1991)
  • Computer Bits (October 1991)
  • Computer Bits (November 1991)
  • Computer Bits (December 1991)
  • Computer Bits (January 1992)
  • Computer Bits (February 1992)
  • Computer Bits (March 1992)
  • Computer Bits (May 1992)
  • Computer Bits (June 1992)
  • Computer Bits (July 1992)
  • Computer Bits (September 1992)
  • Computer Bits (October 1992)
  • Computer Bits (November 1992)
  • Computer Bits (December 1992)
  • Computer Bits (February 1993)
  • Computer Bits (April 1993)
  • Computer Bits (May 1993)
  • Computer Bits (June 1993)
  • Computer Bits (October 1993)
  • Computer Bits (March 1994)
  • Computer Bits (May 1994)
  • Computer Bits (June 1994)
  • Computer Bits (July 1994)
  • Computer Bits (October 1994)
  • Computer Bits (November 1994)
  • Computer Bits (December 1994)
  • Computer Bits (January 1995)
  • Computer Bits (February 1995)
  • Computer Bits (March 1995)
  • Computer Bits (April 1995)
  • CMOS Memory Settings - What To Do When The Battery Goes Flat (May 1995)
  • Computer Bits (July 1995)
  • Computer Bits (September 1995)
  • Computer Bits: Connecting To The Internet With WIndows 95 (October 1995)
  • Computer Bits (December 1995)
  • Computer Bits (January 1996)
  • Computer Bits (February 1996)
  • Computer Bits (March 1996)
  • Computer Bits (May 1996)
  • Computer Bits (June 1996)
  • Computer Bits (July 1996)
  • Computer Bits (August 1996)
  • Computer Bits (January 1997)
  • Computer Bits (April 1997)
  • Windows 95: The Hardware That's Required (May 1997)
  • Turning Up Your Hard Disc Drive (June 1997)
  • Computer Bits (July 1997)
  • Computer Bits: The Ins & Outs Of Sound Cards (August 1997)
  • Computer Bits (September 1997)
  • Computer Bits (October 1997)
  • Computer Bits (November 1997)
  • Computer Bits (April 1998)
  • Computer Bits (June 1998)
  • Computer Bits (July 1998)
  • Computer Bits (November 1998)
  • Computer Bits (December 1998)
  • Control Your World Using Linux (July 2011)
MARKET CENTRE Cash in your surplus gear. Advertise it here in Silicon Chip. r------- ------------------, : CLASSIFIED ADVERTISING RATES Advertising rates for this page: Classified ads: $10.00 for up to 15 words plus 40 : I I I I I I cents for each additional word. Display ads (casual rate): $20 per column I centimetre (Max. 10cm). Closing date: five weeks prior to month of sale. I To run your classified ad, print it clearly on the form below or on a separate sheet I of paper & send it with your cheque or credit card details to : Silicon Chip I Classifieds, PO Box 139, Collaroy Beach, NSW 2097. Or fax the details to (02) I ~ ~I 1 _ _ _ _ __ _ _ _ __ _ _ __ I I 1 I ANTIQUE RADIO ANTIQUE RADIO restorations. Your one-stop rad io repair shop. Specialising in restoring vintage radios including chassis rewiring, re-condensing, quality new parts, valves, valve sockets, speakers, power & audio transformers. Secondhand radio dials & parts for most brands & models. About 400 radios in stock for sale, restoration & parts. Every restored wireless is covered by a 2year warranty on parts & labour. We restore damaged woodwork & cabinets & French polish (approx. 40 coats). Vintage car radios available for sale or restoration . Repairs done on tape decks & amplifiers. Open Sat. 10am-5pm; Sun. 12.30-5pm . 109 Cann St, Bass Hill, NSW 2197. Phone (02) 645 3173 BH or (02) 726 1613 AH. FOR SALE MY AUSTRALIAN DESIGNED low cost super fast Z80 micro-controller development system has gained acceptance already with educational institutions. Pop it on the end of any PC MS-DOS or Z80 machine&awayyougo. Boards, EPROM & 720Kb disc $76 including postage for a short form kit. Gee, I wish I had this when I was a kid. For more information, send a 45c stamp to Don McKenzie, 29 Ellesmere Crescent, Tullamarine 3043. Phone (03) 338 6286. Enclosed is my cheque/money order for $._ _ __ o Bankcard Card No. D Visa Card or please debit my D Master Card '---'---'----'----'I I'--~~I I'--J..__J___~II'--'----'---~ Signature_ __ _ _ __ __ _ _ Card expiry date_ _ _,/_ __ Name _ _ __ _ __ _ _ _ _ __ _ _ _ _ __ __ __ Street - ----'- - - - - -- - -- - -- - -- - - - Suburb/town _ _ _ _ _ _ _ _ _ _ _ Postcode._ __ _ __ XI I I I I I I I I I L------ -------- ----------- ~ 94 SILICON CHIP WEATHER FAX programs for IBM XT/ ATs *** "RADFAX2" $35 is a high resolution, shortwave weather fax, Morse & RTTY receiving program. Needs CGA, SSB HF radio & Radfax decoder. Also "RF2HERC", "RF2EGA" & "RF2VGA", same a,s RADFAX2 but suitable for Hercules, EGA & VGA cards respectively. $35. *** "SATFAX" $45 is a NOAA, Meteor & GMS weather satellite picture receiving program. Uses EGA & VGA modes, needs EGA or VGA colour monitor & card, plus "WEATHER FAX" PC card . $45. *** All programs are on 5.25inch or 3.5-inch discs (state which) & include documentation. Add $3 postage. Only from M. Delahunty, 42 Villiers MEMORY EXPANSION r UNIDEN SCANNERS DON'T PAY MORE! PRICES AT MAY 3RD, 1992 SIMM 1Mbx9 sons $48 1Mbx8100ns $43 1Mbx8 sons $48 4Mbx980ns $183 4Mbx8 sons $175 256x9 sons $16 (FOR SIP ADD $1) TOSHIBA T1000SE 2Mb T2000SX 4Mb T1600 2Mb T31 OOOSX 2Mb T3200SX 2Mb T3200 3Mb T52002Mb T2000SX8Mb $230 $320 $140 $135 $135 $230 $150 $760 DRAM-DIP 41100080 256x480 41256 80 1Mbx480Z 1Mbx480S 1OOXLT RRP $449.95. Our price $409 100 memories, Lo-Hi VHF, Air, UHF 200XLT RRP $549.95. Our Price $477 200 memories, Lo-Hi VHF, Air, UHF, 800 MHz $80 $420 $325 $475 $530 CO-PROCESSORS 387/33/40 $235/$280 387/20/25 $210/$215 SX20/25 $155/$170 287/10/20 $100/$125 Sales Tax 20%. Overnight Delivery. Credit Cards Welcome. PELHAM 50XL RRP $299.95. Our price $211 10 memories, Lo-Hi VHF, UHF $5.40 $5.60 $2.00 $25.00 $25.00 DRIVES 3½ PANAS 1.44 S'GATE IDE 64/16 S'GATE IDE 42/28 S'GATE IDE 108/16 S'GATE IDE 130/16 Tel (02) 9B0 69B8 Fax (02) 980 699 DIGI-CART DSP BOARD For 16-bit IBM compatibles. Broadcast quality 44.1 kHz/16 bit stereo audio with audio recorder software. $1599 + Tax Custom software service for applications available. PC Computers (08) 332 6513 36 Regent St Kensington SA All prices include delivery. Phone any1ime today! (03) 883 9535; Fax (03) 432 0716 TopCom Communications PO Box 336, Greensborough, Vic 3088. ~ ~ TRANSFORMER REWINDS ALL TYPES OF TRANSFORMER REWINDS FIX-A-KIT KIT REPAIR & CONSTRUCTION 3 MONTHS WARRANTY ON REPAIRS 12 MONTHS WARRANTY ON CONSTRUCTION TECHNICAL ASSISTANCE HVCAL ELECTRONICS TRANSFORMER REWINDS Design, Manufacture & Repair of Electronic Reply Paid No.2, PO Box 438, Singleton, NSW 2330. Ph: (065) 761291. Fax: (065) 761003. (02) 633 5477 PLAY MODULE: 16 x 2 with provision for backlighting -$22. * LASER DIODE POINTER: pen sized 5mW pointer in presentation case - $199. * LASER DIODE GUNSIGHT: small adjustable 5mW unit with one pistol or rifle mount$299. * VISIBLE LASER DIODE HEAD: 3V battery operation, 5mW670nm $135. * ARGON LASER HEADS: used but "low hours" units, deliver 30-1 S0mW of bright blue beam! - $800. * BINOCULAR IR VIEWER: clip over a standard helmet - $649. * 12V OPERATED LASER: one used 3mW Siemens laser head plus an inverter kit - $109. * 12V OPERATED LASER: one new 1mW tube plus an inverterkit-$149. * MAINS OPERATED LASER: new 10mW tube plus a new potted mains power supply$389. * 12V LASER BARGAIN: 12V laser inverter kit plus one of our "mystery" tubes, you wont be disappointed $89. * MAINS OPERATED LASER BARGAIN: potted mains power supply plus one of our "mystery" tubes - $139. * 40kHz ULTRASONIC TRANSDUCERS: $4 for a pair, 40kHz xtal - $3.50 * PIR DETECTORS: dual element units supplied with a lens and a suitable circuit- $9.90 * SECOND GENERATION NIGHT VISION TUBES: very small fibre optically coupled tubes that will perform under starlight illumination, rejects with some blemished - from $500 * ELECTRO$: 2200µF/35Vradial $1.20; 470µF/35V radial 60c; 6800µF/ 35V snap in $3. * STEPPER MOTORS: 5V, 7.5-deg., 6.6-ohm, 2-phase - $12. * MAGNIFIER LAMP: 750mm spring balanced arm reach and metal clamp, for 120V operation but easy to rewire, porcelain lamp socket - $79. * MYLAR CAPACITORS: 0.047µF/350V - 60c ea. * LCD PHONE DISPLAY: Hitachi $2 * OPTICAL SWITCH: IR LED and detector on one screw mount assy- $2 * DUAL TV ANTENNA: Panasonic extends to over 1 metre - $9.50 *KEY Equipment WANTED DISTORTION TEST SET wanted to buy. Must be auto-nulling and with instruction manuals. Can be Audio Precision, Sound Technology 170x, Hewlett Packard 339 or equivalent standard. If you have one to sell, please contact Leo Simpson on (02) 979 5644 with details and price. St, New Farm, 4004 Old. Phone (07) 358 2785. 16 CHANNEL MIXER: this is the prototype unit, as described in the February to April issues of SILICON CHIP. Complete and going. $850. Phone Leo Simpson on (02) 97_9 5644. BEAM DIVERGING LENS: used in holography etc, - $9.90 * IR FILTERS: 130mm glass $69, 75mm perspex $16.00 * SOLAR PANELS: one watt into 6-8V loads, 150 x 150 x 2.5mm $10 ea. or 10 for $85 * MONOCULAR IR NIGHT VIEWER: complete small scope, plus kit power supply $269.00 * MAINS OPERATED LASER: two used 3mW Siemens tubes plus a new potted mains power supply - $199. * MAINS OPERATED LASER: new 4mW tube plus a potted power supply$249.00 * SILICON SOLAR CELLS: under load deliver 175mAat 0.46V, 12.5 x 50mm - $1 ea.* IR LASER: collimator assembly plus new 5mW 780nm laser diode, plus driver kit - $89. * LCD DIS- Forty pages of dreams! z ID :e JUNE 1992 95 r-------------------------, SILICON CHIP BINDERS l These beautifully-made binders will protect your copies of SILICON CHIP. They feature heavy-board covers and are made from a distinctive 2-tone green vinyl that will look great on your bookshelf. Advertising Index Active Media Images ................. 64 Alpine Technologies .................. 62 Altronics ................ ...... ......... 72-75 Antique Radio Restorations .... .. 94 A-One Electronics ........ ............. 31 * High quality. * Hold up to 14 issues * 80mm internal width. * SILICON CHIP logo printed in gold- Av-Comm .... .. ....................... 34,63 Breakthrough Computers .......... 86 David Reid Electronics ................ 3 Electronic World ........................ 35 Emona Instruments .. .... ............. 55 coloured lettering on spine & -cover. Geoff Wood Electronics ............ 79 Harbuch Electronics .................. 39 Yes! Please send me _ _ _ SILICON CHIP binder(s) at $A11.95 plus $A3 p&p each (NZ $A6 p&p). Hewlett-Packard ................. IFC,59 Enclosed is my cheque/money order for $_ _ _ _ or please debit my Jaycar Electronics ................ 45-52 0 Bankcard O Visa Card O Master Card Hycal Instruments ........ ........ 33,94 J.V. Tuners ................................ 39 Oatley Electronics ...... ............... 95 PC Computers .. ........................ 95 Card No. Pelham ........ .... .......... ................ 95 Signature_ _ _ _ _ _ _ _ _ _ _ Card expiry date_ _ _/_ __ Peter C. Lacey Services ........... 36 Philips Test & Measurement .... . 57 Name _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __ Street _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __ RCS Radio ................................ 96 Resurrection Radio .......... .. ......... 9 Rod Irving Electronics .... ...... 10-15 Suburb/town _ _ _ _ _ _ _ _ _ __ Postcode_ _ _ _ __ Rolec Pty Ltd ........................ 22-23 Silicon Chip Back Issues .. ... 88-89 SILICON CHIP PUBLICATIONS PO Box 139, Collaroy Beach, NSW 2097, Australia. Phone (02) 979 5644 Fax: (02) 979 6503. L-------------------------J Silicon Chip Binders ............ .. .... 96 Stewart Electronics ...... ............. 95 St Lucia .... .. .... ......................... .. 54 Tektronix ................................. OBC Telecom .. ................. .... ........ ...... 29 SWITCH: shunt type with two keys - $5 *DYNAMIC MICROPHONE: cassette recorder replacement with lead and 3.5mm plug, 200-600 ohms - $5 * STEREO HEADPHONES: Walkman type, featherweight, high performance - $5 * MAINS FILTERS: in IEC socket, 40 joule varistor supplied - $5 * CRO TUBES: 1-inch electrostatic deflection type CV1522 - $35 * VALVES: 866A $5; 6C6-$5 * IEC EXTENSION LEAD: 2-metres long - $6. • A 10% discount applies on a 10-off purchase of any one of the above items* All of the items listed are new unless stated otherwise * You can obtain an illustrated "flyer" that gives more information on these products. Send stamped SAE. Major cards accepted with phone & fax orders. Certified p&p Australia $5; NZ (via airmail) 96 SILICON CHIP $10. Oatley Electronics, PO Box 89, Oatley, NSW 2223. Phone (02) 579 4985. Fax (02) 570 7910. Transformer Rewinds ............ .... 95 TopCom Communications .. ....... 95 Yokogawa ... .. .. ....... ...... ............ IBC PC Boards Printed circuit boards for SILICON CHIP projects are made by: • Jemal Products, 5 Forge St, Welshpool, WA 6106. Phone (09) 350 5555. RCS Radio Pty Ltd is the only company that manufactures and sells every PC board and front panel published in SILICON CHIP, ETI & EA. • Marday Services, PO Box 19-189, Avondale, Auckland, NZ. Phone 88 5730. RCS Radio Pty Ltd, 651 Forest Rd, Bexley, NSW 2207. Phone (02) 587 3491 • RCS Radio Pty Ltd, 651 Forest Rd, Bexley, NSW 2207. Phone (02) 587 3491.