i'm a gme man my self to put my two cents worth in about weather or not you need the new 80ch set's the older 40ch sets are wideband the new 80ch set's are narrow band they are planning to phase out the wide band set's over the next five years but i'll belive it when i see it, some 40ch units can be upgraded some only need to be reprogrammed to narrowband and have the other channels put in but that only my two cent