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42 Trunking Operation
SEARCHING A TRUNKED BANK
Once the data channel is acquired, the scanner begins a
trunk search. With the search function, you will be able
to find all the active talk groups within the trunked sys-
tem. Press
SCAN
. You can switch to the trunk scan
mode from the trunk search mode. See “Scanning the
Talk Group ID Lists” on Page 50.
While scanning conventional frequencies, follow the
steps below to switch to the trunk mode after the scan-
ner finds the data channel.
1. Press
TRUNK
. The scanner begins scanning both
trunking and conventional banks.
2. Hold down
SCAN
for about 1 second. The scanner
switches to the trunk scan mode.
3. Hold down
SRC
for about 1 second. The scanner
switches to the trunk search mode.
Hint:
While searching, you may not know exactly to
whom the talk group IDs are assigned until you listen
awhile. To locate talk group ID lists for your local police,
fire, and other agencies, refer to frequency guides avail-
able at your local RadioShack store or on internet sites
such as
www.trunkscanner.com
. You can also deter-
mine the type of agency you are listening to after a short
while, be it a police, fire, or emergency medical 2-way ra-
dio user. Once you have identified the type of service,
note the associated talk group ID of that unit for future
programming. See “Identifying a Trunked Frequency” on
Page 44. Determining the service associated with a talk
group ID might take awhile, but discovering the ID owner
of each signal is half the fun of trunk scanning!
Turning a Trunked Bank On or Off
Press
DATA (ALT)
during trunk scanning. The selected
trunked banks appear. Press the bank number (
0
–
9
), to
turn the desired bank on or off.
20-524A.fm Page 42 Tuesday, June 27, 2000 3:41 PM