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Contents Vol.23, No.1; January 2010 SILICON CHIP www.siliconchip.com.au Features 12 The Automatic Identification System (AIS) In The Pilbara We counted over 200 ships off the Pilbara using AIS from several thousand kilometres away – by Stan Swan 16 Review: ScreenScope SSC-A531 Digital Scope Just add a USB mouse and a monitor and you’ve got a full-featured 50MHz 2-channel digital scope (and it costs just $539) – by Mauro Grassi 21 The Bureau Of Meteorology’s New Doppler Weather Radar It’s the latest in the Bureau of Meteorology’s weather radar upgrades and you can view its images via the ’net – by Ross Tester Pro jects To Build ScreenScope SSC-A531: A FullFeatured Digital Oscilloscope For Less Than $540.00! – Page 16. 28 A Multi-Function GPS Car Computer, Pt.1 Compact unit boasts a digital speedometer, over-speed alarm, fuel economy meter and a GPS clock. It also indicates the time & distance to destination, altitude, current latitude & longitude and more – by Geoff Graham 42 A Balanced Output Board For The Stereo DAC Simple add-on board adds a pair of balanced outputs with XLR connectors to the High-Quality Stereo DAC – by Nicholas Vinen 62 Precision Temperature Logger & Controller, Pt.1 New design provides precise temperature logging for up to 12 hours & can control a 230V heater at up to 10A. The accuracy is 0.1% (excluding probe error) & it interfaces to a PC for control & programming – by Leonid Lerner Multi-Function GPS Car Computer – Page 28. 78 Voltage Interceptor For Cars With ECUs, Pt.2 Pt.2 this month has the full assembly details for both the main unit & the Pushbutton Controller which is used for programming. There are also full details on installing & using the device – by John Clarke 85 WIB: Web Server In A Box, Pt.3 Final article looks at customising the WIB to meet your own requirements, describes how dynamic content is achieved and gives an example FTP session – by Mauro Grassi Special Columns 58 Serviceman’s Log Ever a sucker for punishment – by the Serviceman 68 Circuit Notebook (1) PICAXE-Controlled Slow-Down For DCC Model Trains; (2) Simple Battery Tester; (3) Bathroom Fan Timer Has Single Switch Operation; (4) Using An Old Mobile Phone Battery To Power A LED Torch; (5) PICAXE Digital Clock Balanced Output Board For The Stereo DAC – Page 42. 88 Vintage Radio The impressive STC Capehart A8551 radiogram – by Rodney Champness Departments   2   4 57 67 Publisher’s Letter Mailbag Product Showcase Order Form siliconchip.com.au 94 98 101 102 Back Issues Ask Silicon Chip Notes & Errata Market Centre Precision Temperature Logger & Controller – Page 62. January 2010  1