Maintenance; Birdie Frequencies - Whistler WS1080 Owner's Manual

MAINTENANCE

Maintenance
Keep the scanner dry; if it gets wet, wipe it dry
immediately. Use and store the scanner only in
normal temperature environments. Handle the
scanner carefully; do not drop it. Keep the scanner
away from dust and dirt, and wipe it with a damp
cloth occasionally to keep it looking new.
Modifying or tampering with the scanner's internal
components can cause a malfunction and might
invalidate its warranty and void your FCC authorization
to operate it.

Birdie Frequencies

Birdies are operating frequencies, which all scanners
have, that are created inside the scanner's receiver and
can cause interference. If the interference is not severe,
you adjusting the squelch might omit the birdie, but if
you program one of these frequencies after a search, you
will hear only noise on that frequency.
If you suspect that a frequency you have programmed
is being affected by a birdie, try removing the antenna.
Removing the antenna will help determine if the
interfering signal is a birdie signal being generated inside
of the scanner, or the result of an external interference
source. If the noise on a frequency is not affected when
the antenna is removed, it is almost certainly the result
of a birdie. If the noise disappears when the antenna
is removed, the noise is most likely coming from an
external source. Moving the scanner may reduce or solve
the issue.
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