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b. If the received talk group does not match the selected talk group, then the received talk group
name is displayed.
• When the dwell display is set to received talk group and the scan mode is None, the radio only
receives voice on its selected talk group. When the call is received, the alias (if available) or the user
ID of the incoming caller is displayed.
• When the dwell display is not set to received talk group, then there is no display indication of an
incoming call.

8.20.2 Transmit a Voice Call

1. Select the desired talk group.
2. Depress and hold the PTT button, wait a couple of seconds. If programmed by the administrator, a
grant tone will be sounded.
3. Begin speaking into the microphone in a normal voice.
4. For maximum clarity, hold the radio approximately 2 inches from your mouth. Take care not to cover
up the microphone while speaking.
5. Release the PTT button to terminate an outgoing voice call.
8.21 ADJUST AUDIO TREBLE LEVEL
The tone of received signals can be adjusted using the radio’s “Treble Menu.”
1. Press the or buttons to cycle through the menu until “Treble Menu” is displayed.
2. Press or to increase or decrease level. There are four levels available: low, medium, medium-
high, and high.
3. Press or wait a few seconds to return to the dwell display.
8.22 TALK GROUP LOCK OUT
There are two ways to focus voice communications by suppressing calls from talk groups in the active
profile.
• No Scan. By changing the Scanning Mode to “No Scan” only the selected talk group is scanned.
• Lock Out. By locking out selected talk groups, background noise or chatter can be eliminated and
scanning resources can be focused on just those groups whose calls you wish to monitor.
Lock out is a listening (receive) function and only blocks received calls on locked out talk
groups. Lock out does not affect transmit capability. “No Scan” and “Lock Out” do not
apply to recent emergency lock outs.
Only talk groups in the active profile can be locked out, since they are the only talk groups whose voice
calls can be heard on the radio. Talk group lock out is a scan-related feature. With lock out, one or more
talk groups in the active profile can be temporarily disabled from being scanned. Calls are not received on
locked-out talk groups. Lock out settings are not retained between profile changes or when the radio is
power cycled.