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Contents Vol.14, No.2; February 2001 FEATURES 6 How To Observe Meteors Using Junked Gear The Earth gets hit by countless small meteors every day. Here’s how to observe and count them using readily available “junk” – by Bruce Mitchell 56 Review: Sony’s Big Rear-Projection TV Set Big, bright and impressive, this 121cm set makes you want to start watching TV again – by Leo Simpson 72 An Easy Way To Make PC Boards At Home Learn how to transfer etching patterns to blank PC boards using nothing more complicated than a laser printout and a hot iron – by Heath Young Observing Meteors Using Junked Gear– Page 6. PROJECTS TO BUILD 14 L’il Pulser Train Controller Here’s a pulse-power train controller that’s cheap and easy to build. It works from any standard 12V model train supply – by John Clarke & Leo Simpson 26 MIDI-Mate: A MIDI Interface For PCs Easy-to-build project connects to your PC’s sound card to provide full MIDI input and output ports – by Jim Rowe 32 Build The Bass Blazer It gives a visual readout of the bass signals from your home theatre or car stereo system on four bargraph displays – by Rick Walters L’il Pulser Train Controller – Page 14. 62 A 2-Metre Elevated Groundplane Antenna Novel design includes a matching section to match the impedance of the feed cable. It’s easy to build too – by Philip Watson 76 The LP Doctor: Cleaning Up Clicks & Pops; Pt.2 Second article has all the construction details – by John Clarke SPECIAL COLUMNS 40 Serviceman’s Log The spirit of Christmas past – by the TV Serviceman MIDI-Mate: A MIDI Interface For PCs – Page 26. 84 Vintage Radio The Healing 412E: a PC-board valve radio – by Rodney Champness DEPARTMENTS 2 4 53 55 71 Publisher’s Letter Mailbag Product Showcase Electronics Showcase Subscriptions Form 89 91 94 96 Ask Silicon Chip Notes & Errata Market Centre Advertising Index 2-Metre Elevated Groundplane Antenna – Page 62. FEBRUARY 2001  1