Adjusting volume level
Use the up/down key to increase or
decrease the volume. And you can
always find the volume level indicator
in the lower right corner of the screen.
Receiving
The radio is ready to receive signals when it is tuned to
the channel that has the same frequency and CTCSS
code as the one that is transmitting. To receive signals,
you also need to leave this very radio’s TALK button
untouched. When signals have been received on the
current channel, RX icon will appear in the lower right
corner of the screen.
Transmitting
Press and hold “TALK” button to talk
to another person. Release the button
for response.
TX Icon will appear in the lower right
corner of the screen when radio is
transmitting.
To get maximum clarity, please speak directly to the
microphone and hold the mic 2 inches from your mouth.
Note: RT388 can only work together when the units are
tuned to the same channel and have the same
CTCSS code on that channel.
Channel Lock
Press and hold MENU button until
icon appears on the screen,
which indicates that the radio is
locked to the current channel,
namely, you cannot switch it to another channel under
this status. To unlock the channel lock function, press
MENU button again for about 2 seconds.
Flashlight
The radio is equipped with flashlight
function, which will bring a lot of
convenience in the dark.
Press “LAMP” button to turn the
flashlight on. And the process to turn
it off is the same as turning it on, just
press “LAMP” button, that’s it.
Select Channel
These units have 8 Channels available for US and
Canada market.
To select any among the 8, you need press MENU
button once, then the channel number on the screen
will blink;
Using up/down key to select the channel you want to
communicate on;
Press TALK button to choose the desired channel and
return to normal mode. Or press MENU button to confirm
the channel and go to set CTCSS code.
Set CTCSS Code
Within a channel, you can partly
avoid interference from other radios
by setting CTCSS code (01-38)
while code 00 refers to no privacy
code is selected. To select any
among the 38, you need press MENU button twice,
then the CTCSS code on the screen will blink;
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