QUOTE (sandslinger87 @ Jan 23 2012, 09:12 AM)

I talked to some of our avionics folks here at work and in the airplane world UHF is better higher freq. and does not need a line of sight or gets blocked by obsticles and travels further, I will call PCI later and get there thoughts and see if the UHF radio can be set-up to talk to a VHF radio.
VHF covers the frequency range for 30 to 300 MHz. UHF covers from 300 MHz to 3000 MHz (3 GHz). They don't overlap and will not communicate to each other.
For aviation use, UHF is better, but for terrestrial use, VHF works out better. The higher the frequency, the shorter the wavelength and more directional it is, more "line of sight."
Most of the people that I know of are using VHF for their race radio. Actually, I don't know anyone who is using UHF, other than a couple using dual bands to talk to their friends who are still clinging to their FRS radios.