Retevis RA89 User Manual page 15

Function 2: TONE Search Scanning
In operating situations where you don't know the CTCSS/DCS tone being used by another station or stations, you can command the radio
listen to the incoming signal and scan in search of the tone being used.
Enter Menu 29st/30nd to start CTCSS/DCS searching.
If the Tone scanning feature does not detect a tone or a code, it will continue to scan indefinitely. When this happens, it may be that the
other station is not sending any tone.
You can press the PTT key to halt the scan at any time.
You also can press the MONI key during Tone scanning to listen to the (muted) signal from the other station. When you release the MONI
key, Tone scanning will resume.
Tone Scanning works either in the VFO or MR modes.
Function 3: TONE Calling (1750Hz)
If the repeaters in your country require a 1750Hz burst tone for access (typically in Europe), you can press and hold Side Key 1 for 2s and
the transmitter will automatically be activated, and a 1750Hz audio tone will be superimposed on the carrier. Once access to the repeater
has been gained, you may release Side Key 1 and use PTT key to activate the transmitter.
21) VFO Step setting (STEP---MENU 27)
Functions: setting of the synthesizer steps.
Enter Menu 27th to set VFO step.
Available Values: 2.5/5/6.25/10/12.5/25/50/100kHz.
22) Wide/Narrow band selecting (N/W---MENU 28)
Functions: setting of wide/narrow bandwidth.
Enter Menu 28th to set bandwidth.
Available Values: Wide---25kHz/Middle---20kHz/Narrow---12.5kHz
Note: wide band is not available for USA and Canada version.
23) Scrambler (SCR—MENU 31)
Functions: only 2/5 tone version has this function.
This transceiver has 1 group of scramblers. It is accomplished by the addition of components to the original signal in order to make an
extraction of the original signal difficult. And its voice companding technology will make the voice clearer in the noise environment.
Enter Menu 31td to set scrambler group.
24)Dual Watch/Monitor (DW- MENU 34)
Function: Dual Watch feature makes transceiver can monitor the calling signal when FM radio is on and you won't miss any calling.
Enter Menu 34th to set DW. Default: ON.
ADVANCED FUNCTIONS
1)EMERGENCY ALERT [
Under standby mode, press [
radio will transmit emergency ring, until you press PTT, it will exit.
2)KEYPAD LOCK SETTING
Under standby mode, press [
And you can Enter Menu 32th [ LOCK MD ] to set Keypad lock method: ALL/PTT/KEY/KEY+S lock.
3)TONE CALLING (1750 TONE)
To access a repeater, press and hold [ Side key 1 ] for the amount of time specified by the repeater. The transmitter will automatically be
activated, and a 1750Hz audio tone will be superimposed on the carrier. Once access to the repeater has been gained, you may release
[ Side key 1] and use the PTT key to transmit.
4) Channel Storage and Delete
Channel Storage
Under VFO mode, input the desired frequency by keypad directly or select one by pressing [
Long pres [ ] , the digits blinks at the right top of LCD. Press number to input the desired channel directly, or
press [ ] or [ ] to choose the desired one, then press [
Note: after you input the desired channel number, if the channel number blinks, it means that this channel is already
occupied, you can choose another one.
e.g.: to store the frequency: 450.325MHz with CTCSS: 151.4 to the channel 05, the steps are as follows:
1)Under VFO mode, input 450.325.
2)Press [ ] + [ ] [
3)Press [ ] to choose CTCSS mode, LCD displays C-CDC 67.0
4)Press [ ] [ ] to choose 151.4, then press [
5)Press [ ] to Exit.
6)Long press [ ] the digit blinks at the right top of LCD.
7)Press [ ] [ ] to choose 05 directly.
8)Press [ ] to save. LCD displays MR mode and currently the saved channel.
Note: if the screen displays D023N instead of 67.0, go back to CTCSS setting. Press successively the [
until the display shows OFF. Then you can press the [
frequency of the last selected tone.
Channel delete
1) Under VFO mode, long press [
2) Press [ ] [ ] or input channel number you want to delete, then press [
3) After deleting, it will skip into the next channel, if you want to delete it, repeat the above operation.
5) FM RADIO FUNCTION
1) Turn On/Off radio receiver
Under standby mode, long press [
[ ] again, radio receiver is turned off.
] + [ ]
] to enter menu setting. LCD displays "MENU", then press [
] for 2s to lock or unlock the keypad. "
] or press [ ] + [
] , and the digit blinks at the right top of LCD
] to turn on FM radio function, LCD displays "70.00M"，then long press
" will be displayed at the top of LCD when keypad is locked.
] to save.
] , then press [ ] to enter.
] to confirm.
] [ ] key, the LCD screen shows the 67.0 or the
13
] to turn on emergency alert function,
] or [ ] .
] key
] to confirm.