Retevis RB27, User Manual

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Note: Selecting a Privacy Code of "OFF" will disable the Privacy feature. To communicate between two RB27
radios, all radios in your group must be set to the same channel and Privacy Code selections.
The transmission Privacy Codes setting steps are as follows:
1> Press [MENU] key to enter the main menu, and press [+UP]/[-DOWN] key to enter the MENU 02.
2> Press [MENU] key again to enter the TXCODE menu;
3> Press [+UP]/[-DOWN] key to select the Privacy Code, and the selection range is OFF / 67.0~754N.
Note: The state of the Privacy Code is off, and the display is OFF. When the display is OFF, press the [+UP] key to
select CTCSS with priority, range 67~254.1Hz (50 groups in total); when the display is OFF, press the [-DOWN]
key to select DCS with priority, range D754I-023N (104 groups in total).
During the selection process, Pressing and holding the [+UP] / [-DOWN] key to quickly search for the sub-tone
code.
4> Press [MENU] key to confirm;
5> Press [PTT] or[A/B] key to exit the menu mode.
6.3.3 Squelch level (SQL) - MENU 03
This function turns on the Squelch when the signal is strong; the Squelch will stay off when the signal is weak. Set
the same DCS codes of your group and turn on the squelch.
By setting the level too high, you may not receive the weak signals; while by setting it too low you may receive
noises or undesired signals.
NOTE: This transceiver has 10 (0-9) available levels: 0 means that the Squelch is turned on. From level 1 to level
9 you will have different levels of noises reduction.
The higher is the level, the louder will be the Squelch.
The steps for setting the squelch level are as follows:
1> Press [MENU] key to enter the main menu, and press [+UP]/[-DOWN] key to enter the MENU 03.
2> Press [MENU] key again to enter the SQL menu;
3> Press [+UP]/[-DOWN] key to select the squelch level, select the range 0, 1-9
4> Press [MENU] key to confirm;
5> Press [PTT] or [A/B] key to exit the menu mode.
6.3.4 Backlight intensity (LIGHT) - MENU 04
The LCD backlight is convenient for you to use at night or in a dark environment. The LCD backlight setting steps
are as follows:
1> Press [MENU] key to enter the main menu, and press [+UP]/[-DOWN] key to enter the MENU 04.
2> Press [MENU] key again to enter the LIGHT menu;
3> Press [+UP]/[-DOWN] key to select the LCD backlight switch, and the selection range is ON/OFF/KEY;
Note: ON-backlight will be always on; OFF-backlight will be always off; KEY-touch key will automatically activate
the backlight. Without any key operation, the backlight will be automatically turned off after a delay of 5 seconds.
4> Press [MENU] key to confirm;
5> Press [PTT] or [A/B] key to exit the menu mode.
6.3.5 Beep tone (BEEP) - MENU 05
If you enable this function, every time a key is pressed, you will hear a Beep tone. You can set it as follows:
1> Press [MENU] key to enter the main menu, and press the [+UP]/[-DOWN] key to enter the MENU 05.
2> Press [MENU] key again to enter the BEEP menu;
3> Press [+UP]/[-DOWN] key to select the BEEP switch, and the selection range is ON/OFF;
Note: ON-turn on the key prompt sound; OFF-turn off the key prompt sound.
4> Press [MENU] key to confirm;
5> Press [PTT] or [A/B] key to exit the menu mode.
6.3.6 VOX (VOX) - MENU 06
Your radio has 5 VOX level settings: (OFF/1~5).
This function allows hands-free conversations: just speak in the direction of the microphone and the communica-
tion will be automatically activated.
The steps for setting up VOX voice control transmission are as follows:
1> Press [MENU] key to enter the main menu, and press the [+UP]/[-DOWN] key to enter the MENU 06.
2> Press [MENU] key again to enter the VOX menu;
3> Press [+UP]/[-DOWN] key to select the VOX switch and sensitivity, the selection range is OFF, 1~5;
Note: Level 5 low sensitivity, use under high background noise; Level 1 high sensitivity, use under low background
noise. Select ‘OFF’ will turn off the VOX function. After the VOX function is turned on, the screen will display the
’VOX‘icon.
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