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FM broadcasting - Wikipedia, the free encyclopedia |
 | | FM radio is a broadcast technology invented by Edwin Howard Armstrong that uses frequency modulation to provide high-fidelity sound over broadcast radio. |
| | FM radio is distributed primarily through broadcast reception of FM radio signals, although it is also possible to distribute FM signals via cable FM, either by using an adapter to plug analogue cable wires directly into an FM receiver, or through the use of television channel allocations on a digital cable service. |
| | The Zenith-GE pilot-tone multiplex system was added to FM radio in the early 1960s to allow FM stereo. |
| en.wikipedia.org /wiki/FM_radio (658 words) |
