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Airband refers to VHF frequencies 108 to 137 MHz, used for navigation and voice communication with aircraft. Trans-oceanic aircraft also carry HF radio and satellite transceivers.
Very high frequency (VHF) is the ITU designation [1] for the range of radio frequency electromagnetic waves (radio waves) from 30 to 300 megahertz (MHz), with corresponding wavelengths of ten meters to one meter.
UHF radio stands for ultra-high frequency radio. UHF radio frequencies range between 300 MHz and 3 GHz, making them higher in frequency than VHF (very high frequency) radio frequencies, which range between 30 MHz and 300 MHz.
15 Αυγ 2020 · In general, VHF radios operate in the 138-174 MHz frequency band and UHF radios operate in the 400-512 MHz frequency band making UHF roughly three times higher in frequency than VHF. One important characteristic of radio waves is the wavelength which is the distance between peaks on a wave:
28 Σεπ 2024 · Communication Characteristics. Range and Coverage. HF: Best for long distances, capable of reaching thousands of miles depending on conditions, frequency, and equipment. VHF: Generally effective up to 100 miles, especially in open areas with minimal obstructions.
One of the primary distinctions between UHF and VHF is their frequency range. VHF operates in the range of 30 MHz to 300 MHz, while UHF operates in the range of 300 MHz to 3 GHz. This means that UHF frequencies are higher than VHF frequencies.
2 Σεπ 2017 · Generally, VHF frequency range is 30~300MHz and UHF is 300~3,000MHz. (according to Wikipedia). However, in ATC, VHF frequency range is 117.975-137MHz and UHF is 225MHz-400MHz. Why is there a difference? And what are the reasons for these differences?
