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Essential Spectrum Sweeper parameters
Like every other object type, there are certain parameters in a SWPR record
that are essential in order for the SWPR object to function correctly. By
default, a newly created SWPR object is ready to go without any changes.
In its default configuration, the SWPR object will sweep through all of the
important land mobile radio bands and look for strong signal activity from
nearby transmitters. As you become more familiar with SWPR operation,
you may wish to include or exclude some bands in your sweeps to check
other frequency ranges or to limit the amount of time the scanner spends
sweeping frequency ranges where local transmitter activity is less likely.
This will speed up operation, and when used while scanning, will allow the
radio to return to scanning for activity on CONV, TGRP and other enabled
objects.
To create a new SWPR object, press PROG to place your scanner into
Program Mode, then press the
NEW
softkey, then press the
SRCH
softkey
to view the available Search types, then press the
SWPR
softkey. By
default the SWPR parameters are set for a general purpose sweep of all
important land mobile radio bands. Optionally, you may wish to toggle the
Type:
field from
All Bands
to
Public Safety
by pressing
4
on the 5-way pushbutton pad. When
Public Safety
is selected, the
frequency sweep will be limited to those frequency ranges typically used
for Public Safety communications. Note that other radio services also use
these ranges, so don't be surprised if you occasionally hear activity that is
not Public Safety related. The sub-bands are defined as follows:
0: 25-54 MHz VHF Low Band
1: 108-136.99166 MHz VHF Aircraft Band
2: 137-174 MHz VHF High Band
3: 216.0025-299.975 MHz 220 MHz Commercial/Amateur Band
4: 300-405.9875 MHz UHF Military Air Band
5: 406-470 MHz UHF Band
6: 470.0125-512 MHz UHF-T Band
7: 764-767 MHz 700 MHz Band
769-776 MHz
794-796.996875 MHz
8: 806-868.9875 MHz* 800 MHz Band
9: 896-960 MHz 900 MHz Band, 23 cm Amateur Band
1240-1300 MHz
* Excludes frequencies utilized by the Cellular Mobile Radiotelephone
Service 824-848.9875 MHz and 869-893.9875 MHz.
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