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Contents Vol.14, No.6; June 2001 FEATURES 12 Weird & Wonderful: New Generation Pilotless Aircraft Global Hawk isn’t the only player on the unmanned aerial vehicle (UAV) scene. Here’s a look at some other innovative designs – by Bob Young 19 Win Two Uniden Mini 2-Way Radios Would you like the chance to win two Uniden UH-040XR UHF CB radios? Just tell us in 50 words or less what you would use them for PROJECTS TO BUILD 24 A Fast Universal Battery Charger It charges nicad, NiMH, lithium-ion and SLA batteries, as well as conventional car and bike lead-acid batteries. Build it and solve all your charging problems in one hit – by John Clarke A PC To Die For; And You Can Build It Yourself – Page 4. 34 Phonome: Call, Listen In & Switch Devices On & Off Simple device lets you call home, switch devices on and off and even listen for any sounds. There’s no connection to the phone line – by Leon Williams 70 L’il Snooper: A Low-Cost Camera Switcher Monitor up to four security cameras on a single monitor with this easy-to-build unit. It automatically selects each camera in turn – by Jim Rowe 80 A PC Games Port Tester So your joystick doesn’t work? Is it the games port, a software problem or the joystick itself? This simple device will tell you if the games port is OK – by Trent Jackson COMPUTERS Fast Universal Battery Charger – Page 24. 4 A PC To Die For – And You Can Build It For Yourself Building you own PC is a lot of fun and you get to know exactly what goes into the machine. We show you how to go about it – by Greg Swain 62 Using Linux To Share An Internet Connection; Pt.2 Our topics this month include connecting to the Internet, setting up demand dialling and installing a firewall – by Greg Swain SPECIAL COLUMNS Phonome: Call, Listen In & Switch Devices On & Off – Page 34. 58 Serviceman’s Log A tangle of faults in jungle ICs – by the TV Serviceman 94 Vintage Radio The miniature STC A-141 mantle radio – by Rodney Champness DEPARTMENTS 2 32 48 57 85 Publisher’s Letter  89 Circuit Notebook   99 Mailbag 101 Book Reviews 102 Subscriptions Form 104 Products Showcase Ask Silicon Chip Notes & Errata Market Centre Advertising Index L’il Snooper: A Low-Cost Camera Switcher – Page 70. June 2001  1