Uniden SC200 Operating Manual page 57

PROBLEM
Channel Activity
Indicators are flashing
but no sound is heard.
If you still cannot get satisfactory results and want
additional information, or to return the unit for service,
please call or write the Uniden Parts and Service Division.
The address and phone number are listed in the Warranty
(at the end of this manual).
SOLUTION
1. May be a private or telephone
interconnect call, which are
intentionally blocked by your
scanner.
2. The ID in your display is not
active.
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