APX 4500 O2 CH
24
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CONTENTS
Push-To-Talk (PTT) Button
IDENTIFYING RADIO CONTROLS
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.
Accy No-Dot
Button (Purple)
Scan On/Off
PTT