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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. Most of these transmitters plug into the device's headphone jack and then broadcast the signal over an FM broadcast band frequency, so that it can be picked up by any ...
FM transmitter may refer to: A transmitter sending out a frequency modulated signal; A personal FM transmitter, a very short range device to enable the listening of ...
shut down in 1957, towers demolished in 1960. Transmitter and support buildings remain New Brunswick Marconi Transmitter: New Brunswick, New Jersey, USA: 21.8 kHz: shut down in 1948, demolished in 1953. Only the station cottage remains Bolinas Marconi Transmitter
KNX-FM (97.1 MHz, "KNX News 97.1 FM") is a commercial radio station in Los Angeles, California, United States. The station is owned by Audacy, Inc. and airs an all-news radio format in a full-time simulcast with KNX (1070 AM ).
[7] [8]: 24.5–24.6 Due to their low radiation resistance (often less than one ohm) they are inefficient, radiating only 10% to 50% of the transmitter power at most, [3] [6]: 14 with the rest of the power dissipated in the antenna/ground system resistances. Very high power transmitters (~1 megawatt) are required for long-distance communication ...
An American FM radio transmitter in Buffalo, NY at WEDG Edwin Howard Armstrong (1890–1954) was an American electrical engineer who invented wideband frequency modulation (FM) radio. [ 12 ] He patented the regenerative circuit in 1914, the superheterodyne receiver in 1918 and the super-regenerative circuit in 1922. [ 13 ]