3.8 Setting the Roger Beep
The Roger Beep is a tone which is automatically transmitted whenever the PTT button is released. This alerts the receiving party to inform that you have intentionally ended the transmission, and you are now in receive mode.
a.Press the MENU button 9 times, the “ON” icon is blinking on the LCD Screen.
b.Press the UP or DOWN button to select the Roger beep
On/Off.
c.Press the PTT button to confirm your setting.
3.9 Setting the Key Tone ON or OFF
This feature allows the Terrain 650 to emit a confirmation tone after pressing each button.
a.Press the MENU button 10 times, the “ON” icon is blinking on the LCD Screen.
b.Press the UP or DOWN button to select the Key tone
On/Off.
c. Press the PTT button to confirm your setting.
4. Setting the Dual Watch Mode
Your Terrain 650 is capable of monitoring two channels, the current
and another (dual watch) channel. If the unit detects a signal on either channel, it will stop and receive the signal.
a. Press the MENU button 11 times, “DCM” icon will be displayed while “OF ” flashes on the LCD Screen.
b.Press the UP or DOWN button to select the Dual Watch channel
c.Press the MENU button to change the CTCSS code.
d. Press the UP or DOWN button to select the desired CTCSS code
e. Press the MENU button to change the DCS code. f. Press the PTT button to confirm your setting.
5.Auxiliary Features 5.1 Key Lock
The Key Lock feature allows user to disable the UP, DOWN and MENU buttons so that the Terrain 650
settings could not be changed accidentally.
a. To activate the Key Lock feature, press and hold the MENU button until key lock “ 
”icon appears on the LCD Screen.
b. To deactivate the key Lock feature, press and hold the MENU button until key lock “
”icon disappears on the LCD Screen.
Note: The PTT, and POWER buttons will remain functional even if the Key Lock feature is activated.
5.2 LCD Screen Back Light
Every time a button is pressed (except PTT and CALL button), the LCD Screen back light will illuminate for 4 seconds.
5.3 Microphone/Earphone/Charge Jack
The Terrain 650 is equipped with an auxiliary microphone, earphone, and charge jack located at the opposite side of the PTT button.
