Operation Manual

13
SCANNING BASICS
This section provides a background on how scanning works.
You don’t really need to know all of this to use your scanner,
but some background knowledge will help you get the most
from your UBC75XLT.
WHAT IS SCANNING?
Unlike standard AM or FM radio stations, most two-way
communications do not transmit continuously. Your
UBC75XLT scans programmed channels until it  nds an
active frequency, then stops on that frequency and remains
on that channel as long as the transmission continues. When
the transmission ends, the scanning cycle resumes until it
receives another transmission on a programmed channel.
WHAT IS SEARCHING?
The UBC75XLT searches for active frequencies. This is
di erent from scanning because you are searching for
frequencies that have not been programmed into the
scanner. When you select frequency bands to search, the
scanner searches for any active frequency within the lower
and upper limits you specify for that band. When the scanner
 nds an active frequency, it stops on that frequency as
long as the transmission lasts. If you think the frequency is
interesting, you can program it into one of the bands. If not,
you can continue to search.
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