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2. KCBS-TV/FM Tower - Wikipedia

   en.wikipedia.org/wiki/KCBS-TV/FM_Tower

   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 ...

3. Mount Wilson (California) - Wikipedia

   en.wikipedia.org/wiki/Mount_Wilson_(California)

   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 ...

4. Citizens band radio - Wikipedia

   en.wikipedia.org/wiki/Citizens_band_radio

   After the 1973 oil crisis, the U.S. government imposed a nationwide 55 mph speed limit, and fuel shortages and rationing were widespread.Drivers (especially commercial truckers) used CB radios to locate service stations with better supplies of fuel, to notify other drivers of speed traps, and to organize blockades and convoys in a 1974 strike protesting the new speed limit and other trucking ...

5. Antenna farm - Wikipedia

   en.wikipedia.org/wiki/Antenna_farm

   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.

6. Loop antenna - Wikipedia

   en.wikipedia.org/wiki/Loop_antenna

   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.

7. List of 50 kW AM radio stations in the United States

   en.wikipedia.org/wiki/List_of_50_kW_AM_radio...

   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.