Uniden UBC144XLT - Manual (Page 14)

Priority Scanning
Your UBC144XLT has fixed Priority Channel, Channel I . Priority Scan works like
a "dual watch" function. When you activate Priority Scan mode, the scanner starts
"sampling," or keeping track of the activity on Channel 1 while listening to other
channels.
Every 2 seconds, the scanner checks Channel 1 for activity. If a signal is present,
Channel 1 will be monitored until the transmission ends, and a constant "P" appears
on the channel display. When the signal stops for more than 2 seconds, normal
operation resumes.
First program the frequency most important to you into
Channel 1.
Press (pwoHiTif) to set the scanner in Priority Scan mode,
"P" appears on the display momentarily every 2 seconds
to indicate that the Priority scan is on.
To exit Priority scan, press (pRioHin).
Channel Lockout
You can lock out a channel so it is not scanned. This does not erase the frequency
from the channel when it is locked out. You can lock out up to 15 channels,
including the Priority channel, but not all 16 channels.
Example: Suppose you want to lock out Channel 2 because it stops on transmissions
you don’t want to hear.
Press
( lockoit )
when the scanner stops on Channel 2. The
scanner locks out Channel 2 and immediately advances to
the next channel to resume scanning.
In the Manual mode, press
( lockout )
to lock out the
displayed channel, PressingTocKOur) does not advance to
the next channel in Manual mode.
The LOCKOUT LED lights to indicate the displayed
channel is locked out.
Whenever you want to search for channels that arc locked out, press C* manuk O
repeatedly to go through all 16 channels. If a channel is locked out, the LOCKOUT
LED lights.
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