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2. FM transmitter (personal device) - Wikipedia

   en.wikipedia.org/wiki/FM_transmitter_(personal...

   Frequency range is 88.1 - 88.3 - 88.5 - 88.7 MHz Belkin TuneCastII FM Transmitter with a modified antenna connected to an iPod music player. A personal FM transmitter is a low-power FM radio transmitter that broadcasts a signal from a portable audio device (such as an MP3 player or a smartphone) to a standard FM radio.

3. List of channel numbers assigned to FM frequencies in North ...

   en.wikipedia.org/wiki/List_of_channel_numbers...

   The range originally adopted in 1945 began with channel 201 (88.1 MHz), or a value high enough to avoid confusion with television channel numbers, [2] which over the years have had values ranging from 1 to 83. Having a gap between the highest TV channel number and the lowest FM channel number allowed for expansion, which occurred in 1978 when ...

4. Broadcast range - Wikipedia

   en.wikipedia.org/wiki/Broadcast_range

   The legally protected range of a station extends beyond this range, out to the point where signal strength is expected to be 1mV/m for most stations in North America, though for class B1 stations it is 0.7mV/m, and as low as 0.5mV/m for full class B stations (the maximum allowed in densely populated areas of both Canada and the U.S.).

5. List of North American broadcast station classes - Wikipedia

   en.wikipedia.org/wiki/List_of_North_American...

   All domestic (United States) AM stations are classified as A, B, C, or D. [1]A (formerly I) — clear-channel stations — 10 kW to 50 kW, 24 hours.. Class A stations are only protected within a 750-mile (1,207-kilometer) radius of the transmitter site.

6. FM broadcasting - Wikipedia

   en.wikipedia.org/wiki/FM_broadcasting

   Position of FM radio in the electromagnetic spectrum A commercial 35 kW FM radio transmitter built in the late 1980s. It belongs to FM radio station KWNR, in Henderson, Nevada, and broadcasts at 95.5 MHz. FM broadcasting is a method of radio broadcasting that uses frequency modulation (FM) of the radio broadcast

7. General Mobile Radio Service - Wikipedia

   en.wikipedia.org/wiki/General_Mobile_Radio_Service

   Theoretically, the range between two hand-held units on flat ground would be about one or two miles (about 1.5–3 km). Mobile units might have a slightly farther range when mounted on a car roof. A GMRS repeater with an antenna mounted high above the surrounding terrain can extend the usable range to 20 miles or more (30+ km) depending on height.