Function Operation - Retevis Rb648 Bedienungsanleitung

Function operation

1. Turn onloff
1 1 Turn the power switch clockwise to turn on the radio, the radio will sound a power-on prompt and all icons wil
be displayed in full screen when the radio is turned on. After the radio is turned on, the default mode of the radio
is in direct call mode, displaying the currently used channel and CTC/DCS, etc.
1.2 When turning off the radio, turn the power switch counterclockwise
2. Volume adjustment
In standby or receiving state, turn clockwise to increase the volume, counterclockwise
1-9 levels of volume can be adjusted cyclically.
Note:
When the volume is not adjusted to a suitable state, please do not put the raido speaker too close to the ear to
avoid the sound being too loud and hurting the hearing
3. Transmit/Receive
3.1 In standby mode, press and hold the transmit button [PTT] to speak. When the transmit icon is displayed, it
means that the call is being sent. To avoid cutting off your call content, please press the [PTT] key for a short
pause, and then start speaking
3 2 Release the transmit button [P TTI can receive the signal sent from the same channel, the speaker emits the
call sound, and when receiving, the receive icon WII be displayed
Note:
1) When the radio is transmitting, please keep the radio in a vertical position and keep the microphone 3-5cm
away from the mouth When transmitting, please keep the radio at least 3 cm from the head or body.
2) During use, there is no need to perform multiple power-on and power-off actions, and at the same time adjust
the volume to a volume suitable for your hearing
3) Before calling on radio, please set the frequency of the transmitter and receiver to the same.
4) Please set the CTC/DCS of the transmitter and receiver for the channel you want to talk to to be the same
4. Set the channel
4.1 In the standby state Of direct call mode, press the [MENU] key once, the current channel will flash.
4 2 Press [A] or [V] key to select the channel you want to set
4 3 Press the [PTT] key to save the current setting and exit the menu or press the [MENU] key to jump to the
next menu setting
4.4 The radios can only communicate when they are set to the same channel, and the sound is clear, no noise.
5. CTC/DCS selection
This product supports a total of 121 groups of CTC/DCS, 38 groups of analog sub-tone codes and 83 groups
(N-phase and I-phase) digital sub-tone codes can be set through software (CPS)
5.1 In the standby state of direct call mode, press the [MENU] key twice, the current CTC/DCS setting will flash
5.2 to select the CTC/DCS you want to set. Press and hold the [A] or [V] key to quickly
switch the CTC/DCS.
5 3 Press the [P TTI key to save the current setting and exit the menu Or press the [MENU] key to jump to the
next menu setting
6.TOT function
When you press and hold the [PTT] key continuously to talk for more than 15-600 seconds, the radio wil emit a
continuous warning tone, the radio will stop transmitting automatically.
7. set can Tone
7 1 In the standby state of direct call mode, press the [MENU] key 3 times, the setting screen of the current cal
tone will flash "CA".
7.2 to select the call tone you want to set, and the radio speaker wil emit the corresponding
call tone at the same time
7 3 Press the [P TTI key to save the current setting and exit the menu or press the [MENU] key to jump to the
next menu setting
Note: When the call tone menu setting is se ected as O, the call function will be invalid when long press the
[CALL] key.
8. Roger Beep
This product supports the Roger Beep function, which can send a sound to remind the receiver that the
transmission has ended
8 1 In the standby state of direct call mode, press the [MENU] key 7 times, and "rb" wil be displayed on the
screen.
8.2 to select
8.3 Press[PTTlkey to save the current settings and exit the menu
8 4 After the function is turned on, there will be a prompt tone after the radio is finished transmitting
121
ON and OFF
until a click sounds
38
03
to decrease the volume,
83