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KCBS-TV/FM Tower (formerly the KNXT/KNX-FM Tower) is a 296.4 meter (972 ft) high guyed radio/television tower on Mount Wilson above Los Angeles (near the Mount Wilson Observatory) at 123 CBS Lane. [1] The KCBS-TV/FM Tower was built in 1986. [2] It was owned by CBS Corporation and used by KCBS-TV (Channel 2) and KCBS-FM (93.1 MHz, 27,500 watts ...
Mount Wilson aerial photo, showing Radio Ridge antenna farm and the Observatory. Photo by Doc Searls. In 1889, Professor William Pickering of Harvard University, along with telescope-maker Alvan Clark, prepared an experiment with 4-and-13-inch (102 and 330 mm) telescopes at Mount Wilson. University students would operate the telescopes for ...
Antennas on Mount Wilson, covered in ice. Where terrain and road access allows, mountaintop sites are very attractive for non-AM broadcast stations and others, because it increases the stations' height above average terrain, allowing them to reach further by avoiding obstructions on the ground, and by increasing the radio horizon.
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Loop antennas interact directly with the magnetic field of the radio wave, rather than its electric field as linear antennas do; for that reason they are on rare occasions categorized as magnetic antennas, but that generic name is confusingly similar to the term magnetic loop normally used to describe small loops.
Omnidirectional antenna unless otherwise specified. A comma after the power indicates sunset. Whatever is after the comma is the night-time authorization, to avoid interfering with other, higher priority stations. Another comma indicates if it's a directional antenna system. DA means the station uses a directional antenna system.
A quad antenna is a self-resonant loop in a square shape; this one also includes a parasitic element.. Loop antennas may be in the shape of a circle, a square, or any other closed geometric shape that allows the total perimeter to be slightly more than one wavelength.
The rubber ducky antenna (or rubber duck aerial) is an electrically short monopole antenna, invented by Richard B. Johnson, that functions somewhat like a base-loaded whip antenna. It consists of a springy wire in the shape of a narrow helix , sealed in a rubber or plastic jacket to protect the antenna. [ 1 ]
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