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The antenna may not be more than 20 feet (6.1 m) above the highest point of the structure it is mounted to, or the highest point of the antenna must not be more than 60 feet (18.3 m) above the ground (47 CFR 95.408(c)) if installed in a fixed location. [4] CB radios must include AM or SSB modulation and may include frequency modulation. [5]
Bell Labs' horn antenna, April 2007. The horn antenna at Bell Telephone Laboratories in Holmdel, New Jersey, was constructed on Crawford Hill in 1959 to support Project Echo, the National Aeronautics and Space Administration's passive communications satellites, [8] [5] which used large aluminized plastic balloons (satellite balloon) as reflectors to bounce radio signals from one point on the ...
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 ...
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 ...
This type of antenna is called a Hogg or horn-reflector antenna, invented by Albert Beck and Harald Friis in 1941 and further developed by D. C. Hogg at Bell Labs in 1961. It consists of a flaring metal horn with a reflector mounted in the mouth at a 45° angle, so the antenna receives radio waves at a 90° angle to the horn axis.
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.
Antenna farms have often been the source of complaints from local neighborhoods, particularly when a new tower is added. This has been increasingly so for TV stations, which have been pursuing with alacrity the construction of new digital television antennas. Because many of these towers are already full, or were built well before there was the ...
Stadium on 22.2, TBD on 22.3, Antenna TV on 22.4 Raleigh: Durham: 28 14 WRDC: MyNet: Charge! on 28.2, Comet on 28.3 Wilson: 30 20 WRAY-TV: TCT: Roanoke Rapids: 36 27 WUNP-TV: The Explorer Channel satellite of WUNC-TV ch. 4 Chapel Hill PBS on 36.2, PBS Kids on 36.3, The North Carolina Channel on 36.4 Fayetteville: 40 22 WUVC-DT: UNI
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