Radio Shack PRO-92 - Manual (Page 50)

50 Trunking Operation
SETTING SQUELCH FOR THE
TRUNKING MODE
Your scanner automatically mutes the audio during trunk
scanning when it decodes control channel data. Howev-
er, we recommend you turn
SQUELCH clockwise and
leave it set to a point just after the hissing sound stops.
This lets the scanner quickly acquire the data channel.
PROGRAMMING TRUNKING
FREQUENCIES
You program trunking frequencies just like non-trunked
frequencies, except that you must store the appropriate
mode (MO, ED, or LT) with each frequency.
Notes:
• You can store only one trunked EDACs and Motor-
ola channel in a bank. You can, however, mix LTR
and conventional channels in a bank.
• If you are scanning UHF trunking frequencies under
the 512 MHz range using subaudible data and are
not using a base frequency and offset, lock out all
data channels. See “Programming Motorola Trunk-
ing Systems (UHF-Lo)” on Page 51 and “Locking
Out Channels or Frequencies” on Page 41. Turn off
the scanner to remove the lockouts.
• If you are programming trunked frequencies for
Motorola Type I and hybrid systems, you must first
program the fleet map (see “Programming Fleet
Maps” on Page 53).
• You must store frequencies using the subaudible
trunking method in banks, mode by mode.
Follow these steps to program trunked frequencies.
1. Press PGM and select the bank, then press TRUNK
to enter the ID program mode.
2. Repeatedly press MODE to select LT for EF
Johnson, MO for Motorola, or ED for the EDACS
(GE/Ericsson) system to scan. This sets the talk
group ID decoding method to be used for the bank.
20-522b.fm Page 50 Thursday, September 7, 2000 9:41 AM