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Contents SILICON CHIP www.siliconchip.com.au Vol.26, No.11; November 2013 Features 16 Raspberry Pi XBMC Solution For Multimedia Add element14’s XBMC solution to your Raspberry PI to build a low cost, highperformance media centre for video and audio files – by Ross Tester 20 DRM Digital Radio: What It’s All About DRM (Digital Radio Mondiale) is a new long-distance digital radio standard for the long-wave, medium-wave, shortwave and VHF bands. We take a look at the basics of DRM and explain how it works – by Jim Rowe 64 Using the SiDRADIO to receive DRM30 broadcasts Want to receive DRM30 broad­casts? All you need is our SiDRADIO, a PC running SDR# and some additional decoding software – by Jim Rowe 84 Review: Gratten Spectrum Analyser & Signal Generator Build A GPS Tracker & Record Your Journeys – Page 24. Capable of working at the frequencies used by mobile phones, cordless phones, WiFi networking and so on, these two test instruments offer impressive performance, build quality and value for money – by Jim Rowe Pro jects To Build 24 Build A GPS Tracker & Record Your Journeys This easy-to-build gadget precisely records where your car, boat or plane has travelled over time. By teaming it with Google Earth, you can then see your trips accurately mapped onto the surface of the Earth – by Geoff Graham 36 Dual-Channel Audio Delay For PA Systems Is the combined sound from the front and rear speakers of your PA system out of sync & muddied? This unit can delay the sound from the front speakers by up to 640ms or more to greatly improve intelligibility – by Nicholas Vinen 72 Alscolyser: For Accurate Alcohol Analysis Simple system accurately measures the amount of alcohol in a drink before it ever reaches your mouth, stomach, kidneys or whatever! It can also be used to check the accuracy of cheapie breath alcohol analysers – by Allan Linton-Smith Dual-Channel Audio Delay For PA Systems – Page 36 Alscolyser: For Accurate Alcohol Analysis – Page 72. 78 SiDRADIO: Integrated SDR With DVB-T Dongle, Pt.2 Second article shows you how to fit the various metal shields and complete the assembly by installing it all in a plastic instrument case – by Jim Rowe Special Columns 46 Circuit Notebook (1) 24-Hour Mode For Nixie Clock; (2) Intelligent Drill Battery Charger; (3) FailSafe Starter For Induction Motor Speed Controller 57 Serviceman’s Log Office computers can take some sorting out – by Dave Thompson 90 Vintage Radio The Australian 123 & Dutch 283A “twin” receivers – by Rodney Champness Departments   4 Publisher’s Letter   6 Mailbag 83 Product Showcase siliconchip.com.au 96 Online Shop 98 99 103 104 Subscriptions Ask Silicon Chip Market Centre Notes & Errata Note: due to space constraints, Tiny Tim Amplifier Pt.2 has been held over until December. SiDRADIO: Integrated SDR With DVB-T Dongle, Pt.2 – Page 78. November 2013  1