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Contents Vol.12, No.10; October 1999 FEATURES   4  Sharing A Modem For Internet &    Email Access WinGate provides the sharing and functions as a DHCP server and firewall into the bargain – by Greg Swain 37  Introducing Home Theatre Large-screen movie action for your lounge room – by Louis Challis 42  Internet Access – Reduced Prices No time limits, no download limits, no fine print – and no hassles 79  The Ultimate Programmable Remote Control Introducing Home Theatre – Page 37. JBL’s “Take Control” TC1000 – by Leo Simpson PROJECTS TO BUILD 16  Backup Battery For Cordless Phones Backup Battery For Cordless Phones – Page 16. Simple circuit keeps your cordless phone operating during blackouts – by Leo Simpson 24  Build The Railpower; Pt.1 A remote controlled throttle for model railways – by John Clarke & Leo Simpson 54  Semiconductor Curve Tracer Build it and display the dynamic characteristics of semiconductors on an oscilloscope – by Rick Walters 64  Autonomouse The Robot; Pt.2 Final assembly and testing – by John Clarke 82  An XYZ Table With Stepper Motor Control; Pt.6 Making the pen holder & plotting a PC board pattern – by Rick Walters SPECIAL COLUMNS 20  Serviceman’s Log Did lightning strike at all? – by the TV Serviceman 76  Vintage Radio Railpower Remote Controlled Throttle – Page 24. Jim Birtchnell and his radios – by Rodney Champness DEPARTMENTS   2  Publisher’s Letter 44  Mailbag 53  Subscriptions Form 70  Product Showcase 73  Electronics Showcase 74  Circuit Notebook 90  Ask Silicon Chip 93  Notes & Errata 94  Market Centre 96  Advertising Index Build A Semiconductor Curve Tracer – Page 54. October 1999  1