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Contents Vol.12, No.11; November 1999 FEATURES 4 USB: Hassle-Free Connections To Your PC USB makes it easy to add peripherals to your PC but what hardware and software do you need? – by Peter Smith 39 Electric Lighting; Pt.15 How neon signs are made – by Julian Edgar 56 Setting Up An Email Server USB: Hassle-Free Connections To Your PC – Page 4. Want to set up your own email server and cut telephone costs? We show you how – by Peter Smith PROJECTS TO BUILD 16 A Speed Alarm For Cars; Pt.1 Is your licence looking a bit dodgey? This compact speed alarm will help you stick to the speed limits – by John Clarke 31 Multi-Colour LED Christmas Tree A low-cost microcontroller chip produces multiple colours and multiple patterns – by Les Grant Build A Speed Alarm For Your Car – Page 16. 62 Build An Intercom Station Expander It’s called the “Addacom” and it lets you add four extra stations to any existing 2-way intercom – by Paul Hoad 72 Foldback Loudspeaker System For Musicians It uses readily available drivers and can be built using basic hand and power tools – by John Clarke 80 Railpower Model Train Controller; Pt.2 Final article describes the IR remote control circuit and gives the full construction details – by John Clarke SPECIAL COLUMNS Multi-Colour LED Christmas Tree – Page 31. 26 Serviceman’s Log Price isn’t everything – by the TV Serviceman 68 Vintage Radio The case of the disappearing TV sets – by Rodney Champness DEPARTMENTS 2 22 44 53 55 Publisher’s Letter Circuit Notebook Mailbag Product Showcase Electronics Showcase 89 90 93 94 96 Subscriptions Form Ask Silicon Chip Notes & Errata Market Centre Advertising Index Foldback Loudspeaker System For Musicians– Page 72. November 1999  1