Hi Jeff and Brian,

I have the pro96 and its been my experience that once you have found the
digital control channel, the scanner automatically tracks the various
frequencies used.  On the older analog trunking system, the control channel
would change frequency every 24 hours, but on the abco 25 system the control
channel only changes frequency if a transmitter goes down or for
maintenance.
73

Bob, [log in to unmask], K8LR
My grandfather always said,
"A shot in the glass is better than one in the ass!"