Audiovox FR140B Owner's Manual page 11

To Transmit
1. Set the desired channel.
2. Press and hold the PTT (Push-to-Talk) button while speaking
slowly and clearly in a normal voice, approximately 2 to 3
inches from the microphone.
3. The TX icon will be displayed while transmitting.
4. Release the PTT button when you finish speaking to
receive incoming signals.
ÿþ
TX
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