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Contents Vol.19, No.11; November 2006 SILICON CHIP www.siliconchip.com.au Features    8  Review: Sony Alpha A100 Digital SLR Camera Sony’s new 10-megapixel black beauty has the goods – by Barrie Smith   16  Review: JVC KD-AVX2 Car Entertainment System A complete entertainment system in a DIN-sized package – by Julian Edgar   68  Review: Bitscope BS310 Mixed Signal Oscilloscope It packs a digital oscilloscope, logic analyser, data recorder and waveform generator into one affordable package – by Peter Smith Sony Alpha A100 10-Megapixel Digital SLR Camera – Page 8. Pro jects To Build   26  Build A Radar Speed Gun, Pt.1 Easy-to-build Doppler speed radar system can read directly in km/h or mph for speeds in excess of 250km/h – by Jim Rowe   34  Build Your Own Compact Bass Reflex Loudspeakers Ready-to-assemble with Peerless & Vifa drivers; you decide the final finish – design by Aaron Waplington   41  Programmable Christmas Star Hundreds of pre-programmed patterns, high-brightness LEDs, twinkle effects and light enough to hang on your Christmas tree – by David Meiklejohn   76  DC Relay Switch For High-Current Loads Build A Radar Speed Gun, Pt.1 – Page 26. Want to switch power to a high-current load using a circuit capable of supplying just a few milliamps? This device is the answer – by John Clarke   80  LED Tachometer With Dual Displays, Pt.2 Completing the construction, tips on installation and adjusting the default software settings to suit your car – by John Clarke   88  PICAXE Net Server, Pt.3 Controlling a simple motor-driven device via the Internet – by Clive Seager Special Columns  48 Serviceman’s Log So hopelessly devoted to you – by the TV Serviceman  62 Circuit Notebook Build Your Own Compact Bass Reflex Loudspeakers – Page 34. (1) Wiegand Decoder; (2) Electronic Combination Lock; (3) Model Train Detector; (4) Picaxe To LCD Interface; (5) Picaxe-Controlled Yoghurt Maker  72 Salvage It! Using the convex lenses from car headlights (bike light) – by Julian Edgar   96  Vintage Radio Radio Corporation’s WS108 military transceiver – by Rodney Champness Departments   2 Publisher’s Letter   4 Mailbag  61 Order Form  94 Product Showcase siliconchip.com.au 104  Ask Silicon Chip 107  Notes & Errata 110  Market Centre Programmable Christmas Star – Page 41. November 2006  1