Operating The Unit - Retevis RT638 Mode D'emploi

Operating the unit

Turning unit on/off
1- Switching on
Press and hold the Menu/PWR until you hear a beep sound.
2- Switching off
Press and hold the Menu/PWR until you hear a beep sound.
Adjusting the Volume
You have 8 preset volume levels. To raise the volume press the Up / Scan button and to decrease the volume,
press the Down /MONI button , then press PTT button or Menu/PWR button to confirm.
Key lock
Press & hold Lock button for 6 seconds, the unit will be locked and lock icon will be displayed in the LCD screen.
When the unit is locked ,only Torch button, Menu/PWR button, PTT button and Lock button can be available.
Press & hold Lock button for 3 seconds, it will be unlocked.
Torch
Press and hold the Torch button, it will be on. Release the button, it will be off. When the unit is turn off, the torch
still can be on/off by Torch button.
Auto scan
Press & hold the Up / Scan button for 2 seconds to activate auto scan. Press & hold the Up / Scan button for 2
seconds to deactivate auto scan Or Press Menu/PWR button to deactivate auto scan.
Monitor (Zero squelch)
Press & hold the Down/Moni button for 2 seconds to activate monitor.
Press & hold the Down/Moni button for 2 seconds to deactivate monitor.
Changing Channels
You have channels with the legal frequency at your disposal. To communicate with another device, you must set
the both on the same channel. To change channels, once you have turned your unit on, press the Menu/PWR
once and use the Up/Down buttons to scroll through to your desired channel. To set your desired channel, press
the PTT button to confirm changes.
Your unit is simplex "one way at a time". While you are speaking, you can not receive a Transmission.
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