UHF is good for caravans because it's somewhat more immune to interference, because... Anyone? Anyone?
What are a couple of the propagation properties that make UHF nice for simplex talk groups? It's not a mistake that FRS radios were put on UHF, for example.
Also, UHF can be interesting because of what environmental phenomenon? Anyone? It happens over large geographical features, like oceans and near mountains often.
'91 Pickup - Imelda
'08 Tacoma TRD - Donna
'09 Kawasaki KLR650
'12 Gunnar Rockhound 29
"Our task must be to free ourselves from this prison by widening our circle of compassion to embrace all living creatures and the whole of nature in its beauty. Nobody is able to achieve this completely, but the striving for such achievement is in itself a part of the liberation and a foundation for inner security. " --Albert Einstein