I have been at Merritt Res in the middle of Cherry Co for a few days. I have a PSR600 using ARC500 full version for programming and a VHF high band antenna. I see one channel is P25 NAC and some are DPL. I have not heard anything but static bursts on 154.98, not a peep out of any thing else. With the ARC500 I have tried SQ Mode all P25 with the listed number 656 NAC and do not hear anything. All the other channels are DPL, is that DCS on the PSR600? I tried it as well as CTCSS/Search and no go. Also tried leaving all channels blank for SQ Mode and SQ Code. Also tried all as P25 and the listed DPL. Any ideas?