Did anyone ever find a solution for this? I have the same issue, 325P2 that receives P25 perfectly on a conventional system, but none of the trunking Phase I P25 data is being read. I can hear the noise on the Control Channel, but no SID is being displayed. Strong signal, it just does not seem to be reading standard P25 in a trunked system. An anomaly that may be a clue in this is that it can read the few Phase II TDMA systems in the area, but not standard Phase I voice. I used a separate 396XT and it can read the CCs etc just fine from the same location; in fact, on a conventional channel, the 325 picks up a better signal, so it is not the antenna. It's almost as if the 325 is only looking for Phase II TDMA and is ignoring regular P25.