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An antenna tracking system tracks a primary antenna to follow a moving signal source, such as a communication satellite. A secondary antenna has a greater beam width than the primary antenna and receives the same tracking signal from the satellite. The primary antenna is tracked according to a predetermined search pattern which causes a ...
Doppler radio direction finding. Doppler radio direction finding, also known as Doppler DF, is a radio direction-finding method that generates accurate bearing information with minimal electronics. It is best suited to VHF and UHF frequencies and takes only a short time to indicate a direction. This makes it suitable for measuring the location ...
Area served City of license VC RF Callsign Network Notes Beckley/Bluefield: Oak Hill: 4 31 WOAY-TV: ABC: Bluefield: 6 17 WVVA: NBC: CW on 6.2, MeTV on 6.3, Court TV on 6.4, Start TV on 6.5, Circle on 6.6
Comparison of EM simulation software. The following table lists software packages with their own article on Wikipedia that are nominal EM (electromagnetic) simulators; Antenna modeling, especially in Amateur Radio. Widely used as the basis for many GUI-based programs on many platforms. Version 2 is open source, but Versions 3 and 4 are ...
Area served City of license VC RF Callsign Network Notes Aberdeen: 16 17 KDSD-TV: PBS: satellite of KUSD-TV. World Channel on 16.2, Create on 16.3, PBS Kids on 16.4, SDPB Radio on 16.5, SDPB Classical on 16.6
Direction finding antenna near the city of Lucerne, Switzerland. Direction finding ( DF ), or radio direction finding ( RDF ), is the use of radio waves to determine the direction to a radio source. The source may be a cooperating radio transmitter or may be an inadvertant source, a naturally-occurring radio source, or an illicit or enemy system.
Free TV Networks is an American specialized digital multicasting and advertising-supported video on demand network media company owned as a joint venture between Warner Bros. Discovery, Lionsgate and Gray Television. The company owns and operates two broadcast television networks and plans to launch four FAST streaming networks that each carry ...
Phase-comparison monopulse. Phase-comparison monopulse is a technique used in radio frequency (RF) applications such as radar and direction finding to accurately estimate the direction of arrival of a signal from the phase difference of the signal measured on two (or more) separated antennas [ 1] or more typically from displaced phase centers ...