MM-013994-001, Rev. J
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9.20.2 From ECP to OTP Mode
Press the or buttons to cycle through available systems until OPEN SKY appears in the display.
Pause briefly and the radio will switch automatically from ECP to OTP operation.
9.21 RECEIVING AND TRANSMITTING VOICE CALLS
As soon as the radio completes the initialization sequence and registers on the OpenSky network, the user
will begin to hear calls from the Talk Groups in the active profile, if available.
9.21.1 Receiving a Voice Call
No action is required to receive a voice call. The display responds to incoming voice calls as follows:
• When the dwell display is set to received Talk Group and the scan mode is Normal or Fixed:
a. If the received Talk Group matches the selected Talk Group, then the alias (if available) or user
ID of the incoming caller is displayed.
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.
A radio receiving a System All Call, Regency All Call, or an Agency All Call displays
“All Call” instead of the alias. A radio not transmitting on a Talk Group in emergency
status will drop all other calls to scan into an All Call.
9.21.2 Transmitting a Voice Call
1. Select the desired Talk Group.
2. Press and hold the PTT button, wait a couple of seconds. If programmed by the administrator, a
grant tone will sound.
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.
9.22 ADJUSTING 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.
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