DNT Young446 plus Notice D'utilisation page 39

External earset
Earsets can be connected to the radio on the Microphone/Speaker jack
on the top of the radio.
To avoid damage to the radio use only original
dnt accessories.
Turn off the radio before connecting external
accessories. Adjust the volume to a low level to
avoid injuries by hearing a loud signal.
General
All settings made in the menu are stored and the
radio returns to standard mode if no button is
pressed within 10 seconds.
Don't touch the antenna during transmission, to
avoid malfunction of the radio.
Transmitting
VOX (HANDS-FREE OPERATION)
VOX allows to switch automatically between transmitting and receiving by
voice operation. The radio transmits while speaking into the microphone
without pressing the PTT button and automatically returns to reception
when the operator stops speaking.
All manuals and user guides at all-guides.com
To transmit, press and hold the PTT (PUSH-TO-TALK)
button and speak with a normal voice at about 5 cm
away from the microphone. The
on while transmitting. Release the PTT button at the
end of transmission.
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General operation
transmitter icon is