Ultra high frequency

:This article is about the radio frequency. See also UHF (movie), UHF (music video), and UHF (band)

Advantages

The main advantage of UHF transmission is that its high frequency means it has a physically short wave. Since the size of transmission and reception equipment (particularly antennas) is related to the size of the wave, smaller, less conspicuous antennas can be used than with VHF or lower bands.

~ ~ ~ ~ ~ ~ ~ ~ ~ ~

UHF is also widely used in two-way radio systems and cordless phones due to the fact that since UHF signals essentially travel over line-of-sight distances, distant transmissions cannot travel far enough to interfere with local transmissions. A great number of public safety and business communications are handled on UHF, and civilian applications such as GMRS, PMR446, and UHF CB are extremely popular. Where communications greater than line-of-sight are required, a repeater is used to propagate signals that otherwise would not reach their destinations.

Related Topics:
Cordless phone - GMRS - PMR446 - UHF CB - Repeater

~ ~ ~ ~ ~ ~ ~ ~ ~ ~