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20-428 Owner's Manual
each transmission to identify talk groups.
setting squelch for trunking mode
Your scanner automatically mutes the audio during trunk scanning when it decodes control channel
data. However, we recommend you turn SQ clockwise and leave it set to a point just after the
rushing sound stops. This lets the scanner quickly acquire the data channel.
programming trunking frequencies
You program trunking frequencies the same as non-trunked frequencies, except that you must store
the appropriate mode (MO, ED, or LT) with each frequency.
Notes:
• You can scan only one type of trunked frequency, either EDACS, Motorola, or LTR in a bank at
one time. You can, however, mix conventional channels and frequencies in a bank.
• If you are programming trunked frequencies for Motorola Type I and hybrid systems, you must
first program the fleet map (see "Programming Fleet Maps").
• If you are programming frequencies for an EDACS system you must store them in the Logical
Channel Number order (usually listed as LCN#). For example, LCN1 would go into channel 01 for
the current bank, and LCN2 would go into channel 02.
• If you are programming frequencies for an LTR system you must store them in the home repeater
order. For example, home repeater order 1 would go into channel 01 for the current bank, and home
repeater order 2 would go into channel 02.
Follow these steps to program trunked frequencies:
1. Press PROG and select the bank.
Note: To move through the bank selection faster, press PROG then FUNC and hold down /¥ or ¥/. To
move through the banks one at a time, repeat the sequence of PROG, FUNC then /¥ or ¥/ until you
reach the desired bank.
2. Press TRUNK to enter the ID program mode.
3. Repeatedly press MODE to select Motorola, EDACS (GE/Ericsson), or LTR (EF Johnson) system
to scan. This sets the talk group ID decoding method to be used for the bank.
Note: If you select conventional mode instead of Motorola, EDACS, or LTR, the scanner does not
scan trunked frequencies. Trunking mode not selected, press Mode key. appears.
4. Press PROG to enter the program mode.
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