telephone amplifier

11·32 - elektor november 1981 telephone amplifier makes distant callers loud and clear " Keeping in touch" is easier said than done, despite the modern telephone networks that stretch to the four corners of the globe. For one thing, a pound for a minute seems a lot of money to hear Granny"s faint voice ten thousand miles away and then not understand a word she"s saying. Elektor has come up with a solution in the form of an amplifier which, when connected to the telephone, enables the whole family to listen in to the conversation. Some callers, of course, don"t need amplifying, as anyone blessed with an old aunt who bel lows hearty greetings down one"s ear at eight o"clock on a Sunday morning wi ll agree. Here an attenuator would be more appropriate! But then that is an exception. Distant and sometimes even local lines can be very poor indeed, so that an ampl if ier is really practical. For instance, when relatives ring up from South Africa, say, or Australia, it would be much mor...