Scan; Monitor; Keypad Lock; A/B Switch - Retevis RB627B Bedienungsanleitung

3. Release the [PTT] key. You can now receive incoming calls. When you do, the Receive RX ---
icon appears on the display.
For maximum clarity, hold the radio 2 to 3 cm away and avoid covering the microphone while
talking.

5.5 SCAN

Your can scan all 30 channels for activity. Pressing and holding [SCAN] key for 2 seconds to
enter. Repeat the same procedure to exit.
Your radio will rapidly scan each of the 30 channels and stop on any active channel. Your radio
will resume scanning after 4seconds when the channel is no longer active.
When you press the [PTT] key to transmit on an active channel, the scanning function will stop
and remain on the active channel for 5 seconds before resuming scan when [PTT] key is no
longer pressed. To resume scanning, quickly press the key.

5.6 Monitor

Press and hold the [MONI] key for around 2 second will let you hear noise so you can adjust the
volume level of the radio when not receiving a signal. This should be used to check activity on
your current channel before transmitting.
Press and hold the [MONI] key for 3 second again to get out of Monitor mode.

5.7 Keypad lock

This function locks the keypad to prevent accidental pressure of the controls.
To avoid accidentally changing the radio setting, press the [A/B ] key for 2 seconds. The
icon will appear on the display.
PTT, LAMP, MONITOR, and FM Radio keys will still be active. Repeat the same procedure to
unlock the keypad.

5.8 A/B switch

Press the [A/B ] switch to select the master frequency.

5.9 Flashlight and Emergency Alert

This function is very useful for night illumination.
To turn it on press [LAMP]; push it again, the flash light will be strobe; push it again: it will turn off.
Open radio, press and hold the [LAMP] key for about 2 seconds to activate the sound and light
alarm function. Press [LAMP] key again to exit the alarm state.

5.10 FM Radio (FM)

The frequency range to listen to the radio is 76-108MHz.
With turned on, Press [FM] to turn on the radio. Select the desired radio frequency with the
[+UP]/[-DOWN] keys. Press [FM] to exit FM radio.
Note: while you are listening to the radio, the channel of A / B receiving signal will automatically-
switch to the channel mode for normal transmitting and receiving.
When the signal disappears the radio will automatically switch again to FM
radio mode.

5.11 1000Hz, 1450Hz, 1750Hz Tone-burst

To send out a tone-burst; you simultaneously will press a key while holding down the PTT. No
further configuration required using this feature.
The following configurations will transmit accordingly:
• [PTT] + [-DOWN] = Transmits 1450Hz Tone Burst
• [PTT] + [+UP] = Transmits 1750Hz Tone Burst
• [PTT] + [MENU] = Transmits 2100Hz Tone Burst
If you have the keypad lock enabled on your radio, you can still send a 1750Hz tone the regular
way without having to unlock your radio.
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