i caught today pioneer electric units talking and one told the other to switch to t.a.-3. i was wondering if he meant talk around three? if so they have at least 3 or more simplex channels in their marcs radios. any one with connections to these power companies? i was thinking about the old 800 mutal aid channels, the new 800 mutual aid channels, 853.4875, there is three or four marcs simplex channels, some of the new 700 mhz simplex channels.