Ok, so your have determined that you need a two way radio system for communicating with others. The first hurdle that most come to is determining if you need UHF or VHF. These two frequencies make up most of the two way radio market so let's talk for a minute about what these are and which one is right for you.

UHF is Ultra High Frequency and VHF is Very High Frequency. Neither is better then the other but one maybe better for your specific use.

The main difference between UHF and VHF is the wavelength. UHF has a shorter wavelength which makes it better for more dense terrain. When I say more dense terrain you could be dealing with more hills, more trees, or more buildings. UHF has better penetrating capabilites. UHF will deal better with going thru walls or other obsticals then VHF.

VHF has a longer wavelength which means that it will transmit futher for the same amount of wattage vs UHF. VHF will not penetrate, ie. go thru walls or other obstacles, as well as UHF. VHF performs better for distance(i.e. goes further when you have a clear line of site), but UHF has better penetrating power (i.e. goes thru walls or orbstacles.)

Well that is the long (VHF) and short (UHF) of it, pun intended. It's not as confusing as it may seem however we do have knowledgeable people to help you with this or any other two way radio communications questions you may have.