Locking Out Frequencies - Radio Shack 20-163 User Manual

Special Signal Stalker
Special Signal Stalker II divides the frequency range by 1 MHz
segments. If you lock out 5 frequencies within 1 MHz segment, the
scanner will skip that segment in subsequent sweeps.
To use Special Signal Stalker II:
1. Press FUNC.
2. Use  or  to select "Sp. Stalker" appears for Special Signal
Stalker II.
3. To turn off Special Signal Stalker II, press FUNC and then  or 
again.

Locking Out Frequencies

When you lock out frequencies during a search, the scanner
continues searching, but ignores the locked out frequencies. You
can lock out up to 50 frequencies in each bank. If you try to lock out
more, "L/O Memory Full!" appears.
While using Signal Stalker II, you can lock out 150 frequencies if
searching all bands and 50 frequencies while searching PubSafety
frequencies. If you lock out 5 frequencies within a 1 MHz segment,
the scanner will skip that segment in subsequent sweeps.
If you lock out all the frequencies in a search bank and only
that search bank is activated, "All ranges Locked out!" appears
and the scanner does not search.
Signal Stalker II still performs a fine step search for locked out
signals. Signal Stalker II will not stop on the signal, but scan
may take longer.
To lock out a frequency:
When the scanner stops on a frequency, press L/OUT.