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2. Radio masts and towers - Wikipedia

   en.wikipedia.org/wiki/Radio_masts_and_towers

   A mast radiator or mast antenna is a radio tower or mast in which the whole structure is an antenna. Mast antennas are the transmitting antennas typical for long or medium wave broadcasting. Structurally, the only difference is that some mast radiators require the mast base to be insulated from the ground.

3. Antenna tuning hut - Wikipedia

   en.wikipedia.org/wiki/Antenna_tuning_hut

   The radio frequency current from the transmitter is supplied to the antenna through a cable called the feedline.The antenna tuning hut contains a matching network made of high wattage capacitors and inductors (coils) that in combination match the antenna's impedance to the feedline, to efficiently transfer power into the antenna.

4. List of catastrophic collapses of broadcast masts and towers

   en.wikipedia.org/wiki/List_of_catastrophic...

   Removal of load-bearing diagonals during FM antenna installation Multi-station tower supporting antennas of TV stations WDBO-TV, WFTV, and WMFE-TV, and radio stations WDBO-FM and WDIZ-FM – two workers on tower killed KCRG-TV Tower Walker, Iowa: October 4, 1973: Guyed Steel Tower 598 Tower modifications

5. Mast radiator - Wikipedia

   en.wikipedia.org/wiki/Mast_radiator

   A mast radiator (or radiating tower) is a radio mast or tower in which the metal structure itself is energized and functions as an antenna. This design, first used widely in the 1930s, is commonly used for transmitting antennas operating at low frequencies , in the LF and MF bands, in particular those used for AM radio broadcasting stations.

6. Antenna tuner - Wikipedia

   en.wikipedia.org/wiki/Antenna_tuner

   An antenna tuner, a matchbox, transmatch, antenna tuning unit (ATU), antenna coupler, or feedline coupler is a device connected between a radio transmitter or receiver and its antenna to improve power transfer between them by matching the impedance of the radio to the antenna's feedline. Antenna tuners are particularly important for use with ...

7. Lightning arrester - Wikipedia

   en.wikipedia.org/wiki/Lightning_arrester

   Powerline worker performs maintenance of a lightning arrester on an electrical transmission tower in New Brunswick, Canada. A lightning arrester (alternative spelling lightning arrestor) (also called lightning isolator) is a device, essentially an air gap between an electric wire and ground, used on electric power transmission and telecommunication systems to protect the insulation and ...

8. T-antenna - Wikipedia

   en.wikipedia.org/wiki/T-antenna

   The name comes from its resemblance to an inverted letter "L" (Γ). The T-antenna is an omnidirectional antenna, radiating equal radio power in all azimuthal directions, while the inverted-L is a weakly directional antenna, with maximum radio power radiated in the direction of the top load wire, off the end with the feeder attached.

9. AN/URC-117 Ground Wave Emergency Network - Wikipedia

   en.wikipedia.org/wiki/AN/URC-117_Ground_Wave...

   UHF and LF receive antennas mounted on either a 10 ft. mast, 30 ft. light pole, or 60–150 ft. tower. A diesel backup generator, with a two-chambered fuel tank having a capacity of 1,020 US gallons (3,900 L) The main GWEN antenna operated intermittently in the LF band at 150 to 175 kilohertz (kHz) (below the bottom of the AM broadcast band at ...