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Contents Vol.19, No.8; August 2006 SILICON CHIP www.siliconchip.com.au Features    8 Video Projector Survey Looking to buy a video projector for your home theatre set-up? Don’t do it until you’ve read this authoritative survey – by Barrie Smith Comprehensive Video Projector Survey – Page 8. 24 Television – The Elusive Goal; Pt.3 The first 25 years are regarded as the “Golden Age of TV” in Australia. Here’s a nostalgic look back over those years – by Kevin Poulter 83 MoTeC Race Car Data logging, Pt.2 Making sense of all the data that’s monitored by the sensors – by Julian Edgar Pro jects To Build 40 Novel PICAXE LED Chaser Clock It’s got hands to indicate hours, minutes and seconds, plus chaser LEDs that stop and freeze at the seconds hand – by Ron Russo & Clive Seager 48 Build A Magnetic Cartridge Preamplifier Want to play back your old LPs and 78s, or convert them to CD or MP3 files? This high-performance preamplifier will let you do the job – by John Clarke 72 An Ultrasonic Eavesdropper Build this unit and listen to a whole new range of sounds, like the supersonic whine of a gas leak or echo-location chirps from bats – by Jim Rowe Novel PICAXE LED Chaser Clock – Page 40. 90 Multi-Throttle Control For PC Flight Simulators Add this very simple multi-throttle controller (for up to four engines) and start flying with the big boys – by Robert Gott 102 Mini Theremin Mk.2; Pt.2 All the construction and adjustment details – by John Clarke Special Columns 56 Serviceman’s Log The dreaded black spot disease – by the TV Serviceman Magnetic Cartridge Preamplifier – Page 48. 96 Circuit Notebook (1) Infrared Remote Extender; (2) PICAXE Battery Protector; (3) MainsDerived Timebase; (4) Automatic Daytime Running Lights; (5) Cheap 1W Luxeon LED Driver 112 Vintage Radio The HMV B11A 5-valve mantel receiver – by Rodney Champness 117 Salvage It! The good bits inside flatbed scanners – by Julian Edgar Departments   2   4 55 69 Publisher’s Letter Mailbag Order Form Product Showcase siliconchip.com.au 122 125 126 128 Ask Silicon Chip Notes & Errata Market Centre Ad Index An Ultrasonic Eavesdropper – Page 72. Main cover photo courtesy Len Wallis Audio. August 2006  1