I just programmed both Capitol Police 1 and 2 in my portable here at work yesterday. It has stopped on channel 2 (453.100) once or twice, but the volume was so low I could not hear it. By the time I grabbed it to listen closer, the transmission was gone. I will turn the volume up and lock it on those 2 channels and monitor them for the day.
My Scanners: Uniden Bearcat BC355N, Uniden Bearcat BC125AT, RadioShack PRO-2014, Bearcat 210XL