What channels are VHF and UHF?
The International Telecommunication Union (ITU) has allocated 15 band numbers to the radio spectrum of frequencies of which VHF is band 8 (30 MHz to 300 MHz), and UHF is band 9 (300 MHz to 3GHz).
Differences between UHF and VHF
The communication range of UHF radio is shortened than VHF radio. Because UHF has a shorter frequency wavelength, it is subject to more interference during propagation, but it is allowed to occupy a larger bandwidth. In the short wavelength of UHF radio, the size of the radio wave is directly related to the transmission length and the receiving antenna.
Typically, UHF antennas are short and wide. VHF is commonly used in FM radio(Like NOAA channels work on 162MHz), radio, long-range data communications, and maritime communications. VHF is very popular in professional applications. Since VHF radio waves are longer and suffer less interference during transmission, the call distance is longer than that of UHF.