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a. Press the MENU button twice, the current CTCSS
sub-channel number flashes on the LCD Screen.
b. Press the UP or DOWN button to select one of the 38
CTCSS sub-channels.
c. Press the PTT button to confirm the sub-channel setting.
3.4.2 SETTING THE DCS ADVANCED DIGITAL CODE.
Each channel also has 83 digital codes to let you set up group of
users for more secured private communication.
a. Press the MENU button 3 times. DCS code is blinking on
the LCD screen.
b. Press UP or DOWN button to select the desired DCS
code.
c. Press the PTT button to confirm the DCS channel setting.
Transmitting and Receiving
The
The
3.4.3 Transmitting (sending a speech)
The unit is continuously in the Receive mode when the unit is turned
ON and not transmitting. When a signal is received on the current
channel, “RX” icon will be displayed on the LCD Screen and the
receiver LED lights up.
3.4.4 Transmitting (sending a speech)
a. Press and hold the PTT (push to talk) button to transmit
your voice. “TX’ icon will be displayed on the LCD
Screen.
b. Hold the unit in a vertical position with the MIC
(Microphone) 5 cm away from the mouth. While holding
the PTT button, speak into the MIC (microphone) in a
normal tone of voice.
c. Release the PTT button when you have finished
transmitting.
3.4.5 Monitor
You can use the Monitor feature to check for weak signals on the
current channel.
a. Press and hold the MENU and DOWN buttons at the
same time. “RX” icon will be displayed on the LCD
Screen. Your Terrain 650 will pick up signals on the
b. Press the MENU button to stop the channel monitoring.
3.5 Setting the VOX (Voice Activated) Sensitivity
In VOX mode, the Terrain 650 will transmit a signal only when
Terrain 650 transmission is “one way-at-a-time.” While you
are speaking, you can not receive a transmission.
Terrain 650 is an open-license band. Always identify
yourself when transmitting on the same channel.
current channel, including background noise.
it is activated by your voice or other sounds around you. The unit
will transmit further for 2 seconds even if you stop talking.