Special Features; Scanning Channels - Retevis RT628 User Manual

• Lock and unlock the keypad (when held down and
not in a menu)
Use to:
• Talk
• Save a setting
Talking and Listening
To communicate, all radios in your group must be set
to the same channel and Interference Eliminator Code.
To talk, press and hold PTT. Hold the radio 2 to 3
inches away from your mouth when speaking.
When you finished speaking, release PTT (press to
talk, release to listen)
Checking the Channel Before Transmitting
Your radio has 22 channels shared on a "take turn"
basis. For uninterrupted communication, do not talk on
a channel if someone else is currently talking on it.
To check for activity on a channel before you talk,
press and hold ♪/MON. If you hear static, the channel
is clear to use.

Special Features

Interference Eliminator Code
Interference Eliminator Codes help minimize interference
by providing you a choice of code combinations. To set
the code for a channel:
1. Press twice, then the code starts to flash.
MENU
2. Press UP or DOWN to select the code 0-121 or 121-0.
3. Press PTT to save the code setting.
You can set a different code for each channel using
this procedure.
Note: You must set the Interference Eliminator Code to
0 if you want to communicate with another radio
which didn't set up the Interference Eliminator
Code.
Push to Talk Timeout Timer
To prevent accidental transmissions and save battery
life, the radio emits a continuous warning tone and
stops transmitting if you press PTT for 180 continuous
seconds.
Locking the Keypad
To avoid accidentally changing your radio settings,
press and hold for 3 seconds or until
MENU
You can turn the radio on and off, adjust the volume,
receive, transmit, send a call tone, and monitor
channels. All other functions are locked.
To unlock the radio, press and hold
or until is no longer displayed.

Scanning Channels

Use scanning to monitor channels for transmissions or
to find someone in your group who has accidentally
changed channels. To start scanning, briefly press and
release . The scan indicator
the radio detects channel activity, it stops scanning
and you can hear the transmission. To respond to the
transmission, press PTT within 5 seconds,the channel
will be confirmed.
Scan Advance
If the radio stops scanning on a channel you do not
3
displays.
for 3 seconds
MENU
displays. When