That might be it.
Yes , might be it...I've noticed that when the CC switches to this one frequency, Unitrunker signal strength bar jumps low to high(green to red) a lot, and I see in sdr that a anolog voice is being broadcasted over with very wide bandwidth. But this does not look like a voice or data, And it happens on all 15 trunked frequencies. I think its a tone overlay. I have a suspicion, I will buy a scanner with a dtap and get Unitrunker to control it for Provoice. And see if its the quality of audio coming from the RTL stick...Maybe it won't pick it up, and it will work better with dsd