Using The Close Call Feature - Uniden UBC3500XLT Owner's Manual

Using the Close Call Feature

Using the Close Call Feature
Your scanner's Close Call
scanner so it detects, displays the frequency of, and
lets you hear a nearby strong radio transmission. You
can set the scanner so the Close Call feature works "in
the background" while you are scanning other
frequencies, turn off normal scanning while the Close
Call feature is working, or turn off the Close Call
feature and use the scanner normally. You can set the
scanner so it alerts you when the Close Call feature
finds a frequency. You can also set the frequency band
where you want the scanner to look for transmissions.
To turn Close Call detection on (CC DND, CC PRI) or
off, press
Func
appears on the display. When CC PRI is on,
appears on the display and normal operation is
briefly interrupted about every 2 seconds.
Notes:
• CC DND (Do Not Disturb) - The scanner checks for
a Close Call hit every 2 seconds only if the scanner
is not currently stopped on a transmission. If the
scanner is on a transmission the scanner waits until
the signal ends to perform a Close Call check. This
prevents breaks in audio during Close Call checks.
• CC PRI - Close Call works even if there is a
transmission. Checks for a Close Call hit every 2
seconds.
• The Close Call feature works well for locating the
source of strong local transmissions such as
mobile and handheld two-way radios in areas with
no other strong transmission sources. Several
factors affect Close Call performance, however.
Performance is increased with higher transmit
power, receive antenna tuned to the target band,
and a low background RF level. Other than the
antenna, you have no control over these factors,
but they explain why performance might vary by
both location and time.
TM
then . When CC DND is on,
Using the Close Call Feature
feature lets you set the
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