Antennas are used to send and receive frequency signals. Very high frequency (VHF) and ultrahigh frequency (UHF) antennas are designed to transmit and pick up different ranges of frequencies in the broadcast spectrum. To help simplify matters, the frequencies in the broadcast spectrum are grouped into channels.
Each channel contains six frequencies. For example, channel 2 is assigned to the 54 to 60 megahertz range; channel 3 is assigned to the 60 to 66 megahertz range; and so on. VHF antennas do not transmit and receive the same channels as UHF antennas.
Look at the size of the elements that make up the antenna. VHF signals are on the low side of the broadcast frequency band, which means they have longer wavelengths. In order to pick up these longer wavelengths of VHF signals, the elements that make up a VHF antenna have to be sufficiently long as well.
UHF signals, on the other hand, have shorter wavelengths. The component parts of a UHF antenna do not have to be as long as those ... more.
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