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Have Quick (also HAVEQUICK, short HQ) is an ECM-resistant frequency-hopping system used to protect military aeronautical mobile (OR) radio traffic. Since the end of World War II , U.S. and Allied military aircraft have used AM radios in the NATO harmonised 225–400 MHz UHF band (part of NATO B band [ 1 ] ) for short range air-to-air and ground ...
[1] [2] [3] It is a radio designed to allow ground forces to communicate with aircraft on either the VHF AM aircraft band (116.000 to 149.975 MHz) or the UHF AM aircraft band (225.000 to 399.975 MHz) in 25 kHz steps. [2] [4] Some versions also have FM capabilities that allows communications on the same frequency range in FM mode. Its first use ...
A RadioShack device, the Multiple Video Distribution System (15-1284 or 150-1284), was marketed in the early-1980s with the capability of block conversion of up to three independent RF modulator signals from VHF channel 3/4 for home viewing on any of channels 74/75, 78/79 and/or 82/83 - channels which remained unused in most markets.
The original Bell System US and Canadian mobile telephone system includes three frequency bands, VHF Low (35-44 MHz, 9 channels), VHF High (152-158 MHz, 11 channels in the U.S., 13 channels in Canada), and UHF (454-460 MHz, 12 channels). Alternative names were "Low Band", "High band" and "UHF".
UHF 225-512 MHz military/homeland defense; UHF 806-824, 851-869, 869-902, 935-941 MHz public safety bands; Continuous Tone-Coded Squelch System (CTCSS), used by many public safety agencies, is available above 400 MHz and below 88 MHz. [6] The transceiver weighs about 12.2 lb (5.53 kg).
It covers both Ultra High Frequency (UHF) and Very High Frequency (VHF) bands with AM, FM, as appropriate. The ARC-182 radio supports the HAVE QUICK II anti-jam waveforms, with an optional control unit. It features a guard channel capability for monitoring 40.5, 121.5, 156.8 and 243 MHz. Transmitter minimum power is 10 watts, AM, and 15 watts, FM.
The Baofeng UV-5R is a popular beginner amateur radio HT in the US. However, the FCC cited the Houston, Texas based importer Amcrest Industries which owns and operates Baofeng radio US for illegally marketing the UV-5R, "capable of operating outside the scope of its equipment authorization", the FCC Citation said, which is outside of its Part ...
Ultra high frequency (UHF) is the ITU designation [1] [2] for radio frequencies in the range between 300 megahertz (MHz) and 3 gigahertz (GHz), also known as the decimetre band as the wavelengths range from one meter to one tenth of a meter (one decimeter).