i noticed that my PSR-600 doesn't stay locked onto the control channel, but still "scans" it. I have no conventional channels in this group (group/scanlist2) and priority is turned off, but it still flashes the T and the I miss some of the radio IDs. The ccdump shows it scanning the cc instead of hanging onto it.
http://jhsands.com/latest.p500
http://jhsands.com/latest.p500