User's Manual

CONVENTIONAL FEATURES

Group IDs

Each Project 25 channel is programmed with a group ID code that

determines the group of mobiles which will receive your call on that

channel and also which calls you can receive.

Coded Squelch

Project 25 conventional channels use a NAC (Network Access

Code) instead of Call Guard squelch (see page 30) to control which calls

are received on a channel. Both the correct group ID and NAC must be

detected to receive a call. However, other operation, such as monitoring,

is similar to when Call Guard squelch is used.

Changing Talk Group Assigned To A Channel

If the TG SEL option switch is programmed, the talk group assigned

to a channel can be changed. This change is permanent (cycling power

does not reselect the old talk group). Proceed as follows:

1. Select the channel to be changed and then press the

TG SEL option

switch.

2. Rotate the Select switch to display talk group to be assigned to that

channel. Talk groups are indicated by a unique identification in the

alphanumeric display.

3. To select that talk group and return to normal operation, press the

SEL

switch again or press the Select switch. If talk group selection has

been disabled on the channel by programming, the talk group does not

change, “NO LIST” is displayed, and a tone sounds.

Individual Calls

If the CALL option switch is programmed, individual calls can be

placed to a specific mobile radio on Project 25 channels. This call differs

from standard group calls in that only one mobile instead of entire groups

of mobiles may receive the call. To respond to an individual call, simply