If the MFK is set to operate only one feature besides
On/Off the radio, Volume Change should be the only
feature applied to MFK.
Consult your dealer or system administrator for the
best options available for MFK.
Push-To-Talk (PTT) Button
The PTT button on the side of the radio serves two
basic purposes:
• While a call is in progress, the PTT button allows
the radio to transmit to other radios in the call.
Press and hold down PTT button to talk. Release
the PTT button to listen. The microphone is
activated when the PTT button is pressed.
• While a call is not in progress, the PTT button is
used to make a new call. See Making a Radio Call
on page 49 for more information.
Identifying Radio Controls
32
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