I've just spent a week on Maui. Not a lot of time for listening, but I did some searching with my PRO-106. No sign of anything P-25-like on the public-safety channels, though I'm not sure what the Johnson system will sound like in P25.
I am hearing FM traffic on the "rebanded" analog trunking system. And as others have commented, although the scanners won't follow the LTR Multi Net II system, just scanning the frequencies as conventional channels is effective enough. I put each area's frequency group in a separate bank. The system seems to simulcast at least some traffic on each area's system.
Each area has one channel that sounds like a dead carrier. It's probably carrying subaudible data, directing traffic to the other channels. I listened to a few of these for maybe 15 minutes, and didn't hear any voice traffic, but given what I've read about the Johnson system, I'm sure they could carry voice traffic if the other channels are busy.
Which, most of the time, they're not. Maui's small population is pretty peaceful, and there's not a lot of radio traffic. A few domestic disturbances, some noise complaints, a fire call or two. Nothing EMS related - I'm guessing that's on some other channels I didn't program. Come to think of it, though, I haven't seen a lot of ambulances running around, either.
The ham radio repeaters are also pretty quiet. It would be fun to have an HF station and "be DX," but so far not enough room in the luggage for that.
73,
Gary KN4AQ
