Vsp5151 is right on the money. I believe it was 1978. I actually found an article about it in a 1978 or 1979 issue in State Trooper magazine at the VCU Library. I miss that system. Vehicular repeaters would often be running even when the trooper was driving--they must've had to turn them on and off manually. The Aerotron radios had some interesting idiosyncracies, too. Functioned as kind of a radar detector for me. The Aerotron radios had some interesting idiosyncracies, too. I believe that they'd encode PL on the Tac channel to match whatever dispatch channel the radio was tuned to. Pretty sure they didn't decode PL on tac, though. On the low band system, I think Div.1 used 42.68 & 42.88--can't remember which was base and which was mobile. When my great uncle was a deputy in New Kent, I think VSP was dispatching them--and am pretty sure they kept dispatching King & Queen after switching to the high band system.
Anybody remember their abortive early plans for a trunked system? I seem to remember that somebody decided that a new type of system should be designed by folks out of VPI. They also had a deal with MCI to build various cell towers on state properties with the idea that they could use those towers for the fantasy system.
73/Allen (N4JRI)