Spectrum Sweeper; Using Spectrum Sweeper - Grecom PSR-300 Owner's Manual

Spectrum Sweeper

Your scanner's Spectrum Sweeper feature provides a powerful new tool for
you to rapidly detect, monitor and store frequencies for nearby radio transmis-
sions. The Spectrum Sweeper feature is similar in functionality to portable fre-
quency counters that cost much more than your scanner, but provides many
advantages over typical portable frequency counters. For example:
The Spectrum Sweeper allows you to sweep the entire range of your scanner's
design frequencies, or you can specify those frequency ranges that you wish
to sweep and exclude ranges that you do not want to sweep. This allows you to
omit frequency ranges with constant strong frequency activity, such as those
with paging or broadcast transmitters. Many portable frequency counters will
remain locked to a nearby constant signal, such as a paging or broadcast
transmitter, and will not function properly until you have left the vicinity of the
transmitter.
The Spectrum Sweeper feature is more sensitive than portable frequency
counters and will detect transmissions at a greater distance. You can activate
the Attenuator to reduce the sensitivity if desired.
Once an active frequency is found, the transmission is played through your
scanner's speaker, and you can quickly store it in any of your scanner's memory
locations.

Using Spectrum Sweeper

Your scanner's Spectrum Sweeper functions when you press and hold
approximately 1 second. The Spectrum Sweeper function can be set to watch
for activity on all band frequencies or PubSafety frequencies only. To change
the all bands to PubSafety or vice versa, press FUNC then
All Band:
36
Band Frequency (MHz)
0 25.000-54.000
1 108.000-136.99166
2 137.000-174.000
3 216.0025-299.975
4 300.000-405.9875
5 406.000-470.000
6 470.0125-512.000
7 764.000-805.996875
8 806.000-868.9875
896.000-960,
9
1240-1300.000
for
.