National Geographic 9111400 Mode D'emploi page 16

8. Scanning for an active radio channel
Press and hold the UP  button 2 seconds: The "SCAN" function indicator will ap-
pear on the display and the channel will scan continuously from 1 to 8. Once an ac-
tive channel is found, the scanning will stop and you can listen to the transmission.
When the transmission on the found channel stops, the scanning will resume au-
tomatically. Note: If you press PTT button while listening to a found channel, the
device will go back to stand-by mode on the found channel.
9. Monitor
Press and hold the DOWN  button about 3 seconds to activate monitor.
Release the DOWN  button to return to stand by mode.
10. Setting the Call tones
The device has 10 call tones.
Press the MENU button 4 times, "CA" is displayed and on the current call tone.
Press the UP/ DOWN  button to change another call tones.
Press the PTT button to confirm and return to stand-by mode.
11. Sending a call tone
Press the PTT button once quickly, the call tone will be transmitted on the selected
channel.
12. Roger Beep On/Off
After the PTT button is released, the device will send out a roger beep to confirm
that talking stopped.
Press the MENU button 5 times, "RO" will be displayed.
Press the UP / DOWN  button to toggle the roger beep ON/OFF.
Press The PTT button to confirm your selection and return to the stand-by mode.
13. Backlit display
Press any button except for the MENU button to activate the back light of the LCD
display. The back light will illuminate for about 5 seconds.
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