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This manual contains 30 telephone improvements. Projects feature step by step instructions, a schematic diagram, complete parts list and parts layout diagram. They include an ear piece amplifier and flashing ring projects for the hearing impaired. If your telephone has a harsh or annoying ring or you want to keep the kids from dialling numbers when you're away or you want the telephone to tell you when it's been left off the hook these and many other problems can be solved easily and inexpensively with Delton T. Horn's 'Ready to Build Telephone Enhancements'. Horn shows how to turn an average, everyday telephone into something much more ...a fully functional multi purpose home communications system that saves you time, money and worries. With 30 simple, low cost projects to choose from, this book aims to offer something for everyone from musical ringers to 900 number disconnects to off the hook alarms. Other novel ideas for electronics hobbyists and do it yourselfers include: a touch tone signaller and decoder, hold button with music, computerized auto dialler, call timer with automatic hang up, long distance lockouts, auto answering modem and tape recorder interface.
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