Interesting, I believe that used to be their MDT channel long ago when they were on VHF.
Unfortunately, can't help much more. Have tried UniTrunker on two different PCs (desktop and
laptop), two different OS's (Win98 and XP Pro), and different versions (Legacy and recent one),
with adjustable audio attenuator cable, with no luck.
I am having similar results; my PRO-2096 into Pro96Comm gives me a good decode. All my other tapped radios give me nothing with P25. I get awesome decodes on Fleetnet and Ottawa EDACS. Even MPT sites decode. LTR and P25 are causing me grief.