Retevis RB20 Manuel D'utilisation page 16

2.3 Group call
To start the group call In the group call, choose the
desired group and click twice to enter the group.
Long press the to start the group call
After you choose the private call, Press "PttDown" and
you can transmit the radio, and release
the "PttDown" to wait for replying. The radio can press
"PTT" to reply.
Notice: the continuous transmission maximum time is
50S, when you over 50S, it will exits transmit
automatic.
To start the Temporary call
In the Group list, choose the desired member, right
click the member, choose the Private call.
Click to cancel temporary group call If it is no one
start talking within 10s, The temporary will exit
automatically.
2.4 To start the private call
Private call, when the dispatcher choose this function, it can transmit anyone in private call.
Operation:
click one radio you want to speak to, then right click, you can find three options: Private call/Get location/Get
track
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