I recently put the 700 system into my 996T, but hadn't tried listening to it until now.Driving around with it today I got a solid decode on the control channel while driving in the Allied Gardens and Mission Gorge area but only briefly. The scanner struggles to keep hold of the CC and most of the time cannot. Stationary at home, it would only briefly catch the CC and the scanner spent most of its time in search of a usable signal. I wonder if some transmitters have recently been activated because as I think you said before, I don't remember it being this bad in the past, then again, I don't listen often.
Seems to work, finds the control channel, signal strength fluctuates between 2 and 5, with the radio not moving at all.
Says it is trunking, but no traffic even in search mode, at 8pm..