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Airband or aircraft band is the name for a group of frequencies in the VHF radio spectrum allocated to radio communication in civil aviation, sometimes also referred to as VHF, or phonetically as "Victor". Different sections of the band are used for radionavigational aids and air traffic control. [1] [2] [3]
Once the target frequencies were identified, radio frequency jamming could easily be employed to degrade or completely disable communications. The Have Quick program was a response to this problem. Engineers recognized that newer aircraft radios already included all-channel frequency synthesizers along
The AN/ARC-182 is a family of military aircraft radio transceivers designed for two-way, multi-mode voice communications over a 30 to 400 MHz frequency range. It covers both Ultra High Frequency (UHF) and Very High Frequency (VHF) bands with AM, FM, as appropriate.
The aircraft emergency frequency (also known in the USA as Guard) is a frequency used on the aircraft band reserved for emergency communications for aircraft in distress.The frequencies are 121.5 MHz for civilian, also known as International Air Distress (IAD), International Aeronautical Emergency Frequency, [1] or VHF Guard, [1] and 243.0 MHz—the second harmonic of VHF guard—for military ...
In the Americas (defined as International Telecommunication Union (ITU) region 2), the FM broadcast band consists of 101 channels, each 200 kHz wide, in the frequency range from 87.8 to 108.0 MHz, with "center frequencies" running from 87.9 MHz to 107.9 MHz. For most purposes an FM station is associated with its center frequency.
Operator would watch the scanner for broadcasts in the typical night fighter MF and VHF radio bands (VHF low band, roughly 37 MHz to 49 MHz - including frequencies used for Close Air Support), if one was seen on the CRT, they would tune it and see if it was indeed an operator. If so, one of the three jammers would put out a warbling tone on ...
Wide band Frequency modulation radio originated in the United States during the 1930s; the system was developed by the American electrical engineer Edwin Howard Armstrong. However, FM broadcasting did not become widespread, even in North America, until the 1960s. Frequency-modulated radio waves can be generated at any frequency.
The term 'ARC-5', while correctly applied to the AN/ARC-5 series, has also come to be a generic, though incorrect, term for the ARA/ATA and SCR-274-N command set units, including those designed by the Aircraft Radio Corporation in the late 1930s. [2] The antecedent of the AN/ARC-5 system was the U.S. Navy's ARA/ATA system, initially deployed in ...