Radio Shack 20-164 - Manual (Page 25)

48
Trunk Scanning
49
Trunk Scanning
Trunk Scanning
In each bank, you can mix conventional
channels and frequencies in a bank. However,
you can scan only one trunking mode at a
time, either EDACS, Motorola, or LTR.
Press SCAN. The scanner scans through
unlocked channels in active banks. To focus
on trunk scanning, you can turn off banks that
contain only conventional channels. To change
the scanning direction, press S or T.
For Motorola channels, your scanner displays
the Talk Group ID memory location, received
frequency, voice channel (VC), and the
Motorola ID number.
Notes:
• Your scanner automatically mutes the
audio while it decodes control channel
data. However, we recommend you turn
SQ clockwise and leave it set to a point
just after the hiss stops. This lets the
scanner quickly acquire the data channel.
• For Motorola trunking systems, more than
one talk group can transmit at a time. If
you manually tune the scanner, you will
hear the talk group on that channel, but
the display will alternate between all active
Talk Group IDs.
• For EDACS and Motorola (above 406 MHz
range), the scanner monitors the control
channel between each transmission to
identify talk groups. For some Motorola
(under 512 MHz range) and LTR systems, the
scanner uses the subaudible data sent with
each transmission to identify talk groups.
Trunking Delay
You can set a Talk Group ID delay separately
from the channel delay. When active, the
scanner checks the Talk Group ID for the delay
time when a transmission ends.
To set a Talk Group ID delay:
1. Press FUNC then •/DELAY while you are
programming the Trunk Group ID.
“ENTER
key saves. 2.0 seconds” appears.
2. Use S or T to set ID Delay: None, 0.5,
1.0, 1.5, 2.0, 2.5, 3.0, 3.5, or 4.0 seconds.
3. Press ENT.
Locking Out Talk Group IDs
You can only lock out Talk Group IDs when the
scanner is in the Closed mode.
To lock out Talk Group IDs:
1. Press PROG then TRUNK.
2. Press FUNC, S or T to move to the
desired bank.
3. Press S or T to select the ID.
4. Press L/OUT to lock out the ID. “lo”
changes to “LO.”
5. To remove the lockout from a trunking ID,
manually select the ID memory, and press
L/OUT.
“LO” changes to “lo.”
Note: You cannot clear all lockouts from
a talk group at the same time.