Silicon ChipContents - February 1990 SILICON CHIP
  1. Outer Front Cover
  2. Contents
  3. Publisher's Letter: On taking risks and picking winners
  4. Vintage Radio: Safety with vintage radios by John Hill
  5. Feature: Bose Noise Cancelling Headphones by Leo Simpson
  6. Feature: Remote Control by Bob Young
  7. Project: 16-Channel Mixing Desk by John Clarke & Leo Simpson
  8. Project: A High Quality Audio Oscillator, Pt.2 by Leo Simpson
  9. Serviceman's Log: Another song about Sam by The TV Serviceman
  10. Project: The Incredible Hot Canaries by John Clarke
  11. Project: Phone Patch For Radio Amateurs, Pt.2 by John Clarke & Greg Swain
  12. Feature: Computer Bits by Steve Rayor
  13. Project: Amateur Radio by Garry Cratt, VK2YBX
  14. Feature: PC Program For Great Circle Bearings by Phillip Watson, VK2ZPW
  15. Back Issues
  16. Feature: The Evolution of Electric Railways by Bryan Maher
  17. Market Centre
  18. Advertising Index
  19. Subscriptions
  20. Outer Back Cover

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

You can view 51 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:
  • 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:
  • 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:
  • A High Quality Audio Oscillator (January 1990)
  • A High Quality Audio Oscillator, Pt.2 (February 1990)
Articles in this series:
  • Phone Patch For Radio Amateurs, Pt.1 (January 1990)
  • Phone Patch For Radio Amateurs, Pt.2 (February 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)
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:
  • The Evolution of Electric Railways (November 1987)
  • The Evolution of Electric Railways (December 1987)
  • The Evolution of Electric Railways (January 1988)
  • The Evolution of Electric Railways (February 1988)
  • The Evolution of Electric Railways (March 1988)
  • The Evolution of Electric Railways (April 1988)
  • The Evolution of Electric Railways (May 1988)
  • The Evolution of Electric Railways (June 1988)
  • The Evolution of Electric Railways (July 1988)
  • The Evolution of Electric Railways (August 1988)
  • The Evolution of Electric Railways (September 1988)
  • The Evolution of Electric Railways (October 1988)
  • The Evolution of Electric Railways (November 1988)
  • The Evolution of Electric Railways (December 1988)
  • The Evolution of Electric Railways (January 1989)
  • The Evolution Of Electric Railways (February 1989)
  • The Evolution of Electric Railways (March 1989)
  • The Evolution of Electric Railways (April 1989)
  • The Evolution of Electric Railways (May 1989)
  • The Evolution of Electric Railways (June 1989)
  • The Evolution of Electric Railways (July 1989)
  • The Evolution of Electric Railways (August 1989)
  • The Evolution of Electric Railways (September 1989)
  • The Evolution of Electric Railways (October 1989)
  • The Evolution of Electric Railways (November 1989)
  • The Evolution Of Electric Railways (December 1989)
  • The Evolution of Electric Railways (January 1990)
  • The Evolution of Electric Railways (February 1990)
  • The Evolution of Electric Railways (March 1990)
OUR NEW 16-CHANNEL FEBRUARY 1 990 MIXER has switchable balanced and unbalanced line inputs, equalisers on each input channel, effects and foldback facilities, and LED bargraph VU meters. Details page 18. FEATURES 10 Bose Noise Cancelling Headphones by Leo Simpson Electronics cancels the noise 78 PC Program For Great Circle Bearings by P. Watson You just punch in the co-ordinates 94 The Evolution of Electric Railways by Bryan Maher Pt.28: the French TGV fast trains PROJECTS TO BUILD 18 16-Channel Mixing Desk by John Clarke New design has equalisers on each input channel 32 A High Quality Audio Oscillator, Pt.2 by Leo Simpson Construction and testing THIS NOVEL UNIT will produce the sounds of two canaries singing together in a way which will intrigue you. Seven Schmitt triggers are all it takes to set the unit twittering. .See page 50. 50 The Incredible Hot Canaraies by John Clarke Schmitt triggers give it the twitters 62 Phone Patch For Radio Amateurs, Pt.2 by Greg Swain Final assembly and troubleshooting 74 Random Wire Antenna Tuner For 6 Metres by G. Cratt Tune up a long wire for optimum VSWR SPECIAL COLUMNS 6 ·Vintage Radio by John Hill Safety with vintage radios 14 Remote Control by Bob Young Transmitter encoders & black wire syndrome 44 Serviceman's Log by the TV serviceman Another song about Sam 68 Computer Bits by Steve Payor Some ideas on computer interfacing - ~ •- . ONCE UPON A TIME, the serviceman acquired a TV analyser. It sure came in handy this month. You can read about his self-inflicted agony by turning to page 44. DEPARTMENTS 2 Publisher's Letter 3 Mailbag 26 Circuit Notebook 60 Bookshelf 84 Product Showcase 90 Back Issues 100 Ask SIiicon Chip 103 Market Centre IBC Subscription Page OBC Silicon Chip Binders LOOKING FOR A random wire antenna tuner for the 6-metre (50MHz) band? This easy to build unit will solve those antenna hassles. See page 74·. FEBRUARY1990 1