Publisher's Synopsis
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.
