What is transmitter?

  • (noun): Set used to broadcast radio or tv signals.
    Synonyms: sender
    See also — Additional definitions below


In electronics and telecommunications a transmitter or radio transmitter is an electronic device which, with the aid of an antenna, produces radio waves. The transmitter itself generates a radio frequency alternating current, which is applied to the antenna. When excited by this alternating current, the antenna radiates radio waves. In addition to their use in broadcasting, transmitters are necessary component parts of many electronic devices that communicate by radio, such as cell phones, wireless computer networks, Bluetooth enabled devices, garage door openers, two-way radios in aircraft, ships, and spacecraft, radar sets, and navigational beacons. The term transmitter is usually limited to equipment that generates radio waves for communication purposes; or radiolocation, such as radar and navigational transmitters. Generators of radio waves for heating or industrial purposes, such as microwave ovens or diathermy equipment, are not usually called transmitters even though they often have similar circuits.

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Some articles on transmitter:

Heidelstein Transmitter
... Heidelstein transmitter is a facility for FM- and TV-broadcasting on the Heidelstein mountain in the Rhön ... The Heidelstein transmitter is property of Deutsche Telekom ...
Transmitter - History
... The first primitive radio transmitters (called Hertzian oscillators) were built by German physicist Heinrich Hertz in 1887 during his pioneering investigations of radio waves ... These spark-gap transmitters were used during the first three decades of radio (1887-1917), called the wireless telegraphy era ... turn of the century, such as the Alexanderson alternator and Poulsen Arc transmitters ...
Haganeyama Transmitter
... Haganeyama Transmitter (はがね山標準電波送信所, haganeyamahyoujyundenpasoushinjyo) is an LF-time signal transmitter at Fuji-cho, Saga-city, Saga-ke ...
Polatlı Today - Longwave Transmitter
... Near Polatli, there is a longwave broadcasting transmitter, which works on 180 kHz with a transmitter output power of 1200 kW ...
Alpha (navigation) - Transmitters
... Alpha transmitter Novosibirsk (55°45′22″N 84°26′52.4″E / 55.75611°N 84.447889°E / 55.75611 84.447889) Alpha transmitter Krasnodar (45°24 ...

More definitions of "transmitter":

  • (noun): Someone who transmits a message.
    Synonyms: sender
  • (noun): Any agent (person or animal or microorganism) that carries and transmits a disease.
    Synonyms: vector