Small-scale use of the FM broadcast band
In some countries, small-scale (Part 15 in United States terms) transmitters
are available that can transmit a signal from an audio device (usually an
MP3 player or similar) to a standard FM radio receiver; such devices range
from small units built to carry audio to a car radio with no audio-in
capability (often formerly provided by special adapters for audio cassette
decks, which are becoming less and less common on car radio designs) up to
full-sized, near-professional-grade broadcasting systems that can be used to
transmit audio throughout a property. Most such units transmit in full
stereo, though some models designed for beginner hobbyists may not. Similar
transmitters are often included in satellite radio receivers and some toys.
Legality of these devices varies by country. The FCC in the US and Industry
Canada allow them. Starting on 1 Oct 2006 these devices became legal in most
countries in the European Union. Devices made to the harmonised European
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