Retevis RB648 Bedienungsanleitung Seite 6

9. Button Function
9.1 [SOSI key: long press this key to turn on the alarm function, press the PTT key to stop
9.2[CALL] key: long press this key to switch between direct call and NOAA weather mode; short press this key to
transmit call tone
9 3 [SCAN] key: long press this key to start listening; short press this key to start scanning
9 4 [MENU] key: long press this key to operate the lock or unlock function; short press this key to enter or exit the
menu
9.5[Alkey: short press up
9.6[V Ikey: short press down
9 7[PTT] key transmit or save settings (in menu mode)
10. key lock function
The keyboard lock function is to prevent users from misoperation when they do not want to change the settings
of the radio.
10.1 Press and hold the [MENU] key until the Ock icon appears to enter the keyboard lock state.
10 2 Press and hold the [MENU] key until the lock icon disappears to exit the keyboard lock state
Note: When the keyboard is locked, a key failure tone WII be emitted when any key is pressed except for the
[PTT] key
11. channel scan
11.1 In the standby state, press the [MENU] key 6 times, and the screen will display "SC"
11 2
11 3 to save the current setting and exit the menu
11.4 The scanning function of the radio to scans the channels with valid signals, you can easily scan all channels
Note: When the scan menu setting is selected as OF, the scan function will be invalid when pressing the [SCAN]
12. Start scan:
12 1 Press the [SCAN] key in standby mode of direct call mode to enter the scan mode, the channel number WII
be displayed in an upward increment, and the [SCAN] icon will be displayed on the LCD.
12.2 When an active channel is detected, the radio automatically pauses to receive signals on this channel until
the signal disappears. After the signal disappears for 5 seconds, the radio will continue to scan.
12.3 During the scanning process, press the [PTTI key, the radio will stop on the channel that entered the scan
and transmit. If a valid signal is detected, the scan will stop and receive the signal, press the [PTT] key and the
radio will transmit on the current channel scanned After releasing the [P TTI key for 5 seconds, the radio wi
continue to scan
12.4 Press the [SCAN] key again to exit scan and return to the radio standby mode.
13. VOX function
When the VOX function is turned on, you do not need to press the [PTT] key to be able to talk, speaking directly
into the microphone, calls will automatically transmit
13.1 In the standby state of direct call mode, press the [MENU] key 4 times, VOX wil be displayed on the screen,
and the VOX level can be set
13.2
9 = High sensitivity leve
Medium sensitivity level
1 = low sensitivity level
O = OFF
13.3 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
Select sensitivity O, turn off the VOX function, and the VOX icon wil disappear
13.4 Talk directly into the microphone and the call will be transmitted automatically. There is a brief delay
between the start of speaking and the radio transmission.
13.5 Stop speaking, the radio can enter the receiving state
14. Battery power display
The battery icon shows the power level, from full to empty
charge in time, accompanied by a ow battery reminder (once every 30 seconds). When the battery power is low,
the radio will be turned
Note: When the radio is not used for a long time, you need to charge the radio from time to time.
15. Caller Vibration
15 1 In the standby state of direct call mode, press the [MENU] key 8 times, and the screen wil display "U 1"
15 2
15.3 Press[PTT]key to save the current settings and exit the menu
to select ON and OFF
to select sensitivity level 1-9:
and low battery warning
off.
to select ON and OFF
When the power level is O,the user is prompted to
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