User's Manual

20-405 User’s Guide DRAFT
The Scanner is not working at all.
• The AC or DC adapter might not be connected. Be sure the adapter’s barrel plug is fully inserted
into the PWR 9V jack. The center tip of the adapter’s barrel plug must be set to positive.
The scanner does not receive any stations or reception is poor.
• An antenna is not connected or is connected incorrectly. Be sure an antenna is properly connected
to the scanner.
The scanner is on but does not scan.
• The squelch might not be adjusted correctly. Turn SQUELCH clockwise.
• Only one channel or no channels are stored. Store frequencies into more than one channel.
The keypad does not work.
• The scanner might need to be reset or initialized. Turn the scanner off then on again, or initialize the
scanner (see “Initializing the Scanner” on page XX).
While scanning, the scanner locks on frequencies that have unclear transmission.
• Some frequencies programmed into the scanner might be the same as birdie frequencies. Avoid
programming birdie frequencies or only listen to them manually.
Birdie Frequencies
Every scanner has birdie frequencies. Birdies are signals created inside the scanner’s receiver,
which may interfere with transmissions on the same frequencies. If you program one of these
frequencies, you hear only noise on that frequency. If the interference is not severe, you might be
able to turn SQUELCH clockwise to omit the birdie.
To find the birdies in your scanner, disconnect the antenna and move it away from the scanner. Make
sure that no other nearby radio or TV sets are turned on near the scanner. Use the Tune to search
every frequency range from its lowest frequency to the highest. Occasionally, the searching will stop
as if it has found a signal, often without any sound. This is a birdie. Make a list of all the birdies in
your scanner for future reference.
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