Uniden UBC 120XLT - Manual (Page 14)

Operation Overview
Note; Before operating the UBC^20XU for Ню first tíme,
make sure you have fully charged the Battery Pack,
1. Before turning on the scanner, rotate the Squelch
Control fully clockwise,
2. Turn the scanner on by rotating the On-Off/Voiume
Control clockwise until you hear a click. Turn the
Volume Control a small amount clockwise to a low
listening level.
3. You should hear either a "rushing” noise or some
communications. If you are monitoring a transmission,
wait until it stops before adjusting the Squelch Control.
4. Readjust the volume to a comfortable listening level.
5. Turn the Squelch Control counterclockwise just until the
rushing noise disappears. At the squelch threshold,
any incoming signal just slightly stronger than the noise
will open the squelch. Any communication that is
received will open the Squelch, and stop scanning or
Searching.
Note: If squelch is set too tight, that is, too far
counterclockwise from the threshold point, a much
stronger signal is required to open the squelch. If squelch
is set on a point clockwise from the threshold, you will hear
a constant sound (noise, if no signal is present.) The
scanner will not scan.
The UBC 120XLT has 100 memory channels, each of which
can be programmed to store one frequency. The channels are
divided into ten 10-channel banks, useful for storing similar
frequencies in order to maintain faster scanning cycles.
You can monitor communication in one of two ways:
■ SCAN If you have programmed channels, you can
scan alt programmed channels in the selected bank(s),
except locked out channels. When scanning stops on
an active frequency, it remains on that channel as long
as the transmission continues. When the transmission
stops, the UBC 120XLT resumes scanning, If the Delay
Mode is on, the scanner remains on the same channel
for 2 more seconds, waiting for a responding
transmission. If there is no responding transmission
within 2 seconds, the scanning cycle resumes.
Any channels that are not programmed (000.0000) are
skipped during scan.
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