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Mast radiators radiate vertically polarized radio waves, with most of the power emitted at low elevation angles. In the medium frequency (MF) and low frequency (LF) bands AM radio stations cover their listening area using ground waves, vertically polarized radio waves which travel close to the ground surface, following the contour of the ...
The ground-hugging waves allowed the signals to travel beyond the horizon, out to hundreds of kilometers. However the newer FM and TV transmitters used the VHF band, in which radio waves travel by line-of-sight, so they are limited by the visual horizon. The only way to cover larger areas is to raise the antenna high enough so it has a line-of ...
main mast of Shaanxi No.10 Transmitting Station, Chunhua, Xianyang, Shaanxi, China: May 2, 1982 [10] Guyed steel lattice mast 129 [11] High winds and corrosion Senior Road Tower, Missouri City, Texas, US December 7, 1982: Guyed steel lattice mast 569 Guy support wire severed Total collapse during installation of 6-ton FM antenna on new 1800 ft ...
The diamond-shaped tower was patented by Nicholas Gerten and Ralph Jenner for Blaw-Knox July 29, 1930. [5] and was one of the first mast radiators.[1] [6] Previous antennas for medium and longwave broadcasting usually consisted of wires strung between masts, but in the Blaw-Knox antenna, as in modern AM broadcasting mast radiators, the metal mast structure functioned as the antenna. [1]
The Telefarm Towers is a transmission site for FM radio and television broadcasting in Shoreview, Minnesota consisting of two guyed towers.. The towers, called Shoreview Towers by local residents, are owned by Telefarm, Inc., a joint venture of Twin Cities broadcasters CBS Television Stations (WCCO channel 4), Hubbard Broadcasting (KSTP channel 5, KSTC channel 5.2, KSTP-FM 94.5 FM, and KTMY ...
David Charles Hahn (October 30, 1976 – September 27, 2016), sometimes called the "Radioactive Boy Scout" and the "Nuclear Boy Scout" was an American nuclear radiation enthusiast who built a homemade neutron source at the age of seventeen.
The northern tower was fed from the transmitter through a top coil, with the top coil of the southern slave tower being fed via the capacitance wires. The MW aerial was an insulated guyed steel lattice mast with a height of 147 metres. All masts virtually stood in the sea on the narrow Gisseløre peninsula, providing excellent radiation efficiency.
A guyed radio mast. A guyed mast is a tall thin vertical structure that depends on guy lines (diagonal tensioned cables attached to the ground or a base) for stability. The mast itself has the compressive strength to support its own weight, but does not have the shear strength to stand unsupported or bear loads.