Radio Shack 20-164 User Manual page 22

advantages.over.typical.portable.frequency.
counters..
Signal.Stalker.II.is.more.sensitive.than.
portable.frequency.counters.and.will.detect.
transmissions.at.a.greater.distance..Signal.
Stalker.II.rapidly.searches.the.RF.spectrum.in.
1.MHz.segments..If.it.detects.a.signal,.Signal.
Stalker II searches in finer steps until the signal
source.is.found.
Signal.Stalker.II.can.search.all.frequencies,.
or you can define frequency ranges, to avoid
ranges.with.constant.activity,.such.as.paging.or.
broadcast.transmitters..
To use Signal Stalker II:
1.. Hold.the.Signal.Stalker.button.(
approximately.1.second..
2.. To.change.the.scanned.band.(All.Band.or.
Police/Fire),.press.FUNC.then.Signal.Stalker.
( )..For.a.list.of.Signal.Stalker.Bands,.see..
Appendix.D.
3.. To.turn.off.a.bank,.press.the.bank.or.group.
number.while.Signal.Stalker.II.is.active.
4.. To.turn.off.Signal.Stalker,.hold.the.Signal.
Stalker.button.(
Priority mode is not available while using
the Signal Stalker II.
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.
).again.

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