Retevis RB23, User Manual

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Basic operations
1. Indicator
Red light in transmission, and green light in reception.
2. Channel knob.
Rotate channel knob to switch the channel 1~30. Counterclockwise rotation reduces the channel number,
clockwise rotation increases the number of channels. The prompt alert ring when the channel is free.
3. Power ON/OFF knob/Volume adjust knob
Clockwise rotation to turn on the radio, counterclockwise rotation and hear a click to turn off the radio. Volume
adjusting when rotation.
4. PTT button
Press [PTT] button and speak to call, light red. Light red with alert when the channel is free. Release [PTT]
button to receive, light green and speaker works.
5. Customize the side keys
Program the side keys’ function on programming software of RB23.
Short press [PF1] or [PF2]:
A. Monitor B. Alert C. VOX D. VOX delay E. Scan
Monitor: listen for calls on the chosen channel. If there is no call it is noisy.
Alert: activate the alert function, press [PTT] to return.
VOX: Turn on/off VOX function.
VOX delay: adjust the time of delay.
Scan: Automatically detects channels with scanning enabled in channels from 1 to 30. When there is a signal in
the channel being scanned, the radio will stop on the channel for speaking. (Scan function can be customized for
each channel in the programming software)
6. Squelch level
Signal reception integrity can be adjusting the quelch level. The lower the quelch level, the less noise filtering,
and the longer distance, but the weaker the anti-interference ability.
The factory setting of the radio is level 5. The level can be chosen from 0~9 in the ‘squelch level’, ‘function
setting’ list in programming software. Level 0 means squelch normally open.
7. TOT: Time out timer
The purpose of the TOT is to prevent single radio from occupying the channel for too long, and to avoid damage
PTT
PF1
PF2
Battery
SP/MIC jack/programming cable jack
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