Retevis RT18 - Two Way Radio Manual

Function Introduction

• FrequencyFRS
• Up to 16 Channels
• Chinese/English Language
• 50 Groups CTCSS,105 Groups of standard DCS
• Time-out timer(TOT)
• Battery saving function
• Alarm function
• USB rapid charge
• Programmable by PC

Basic information

Parts List

Radio x2
Battery x2
Belt Clip x2
USB Cabel x1,
Hand-Strap x2
User's Manual x1

Basic Parameter

Size: 130X52X14mm
Weight: 80g
Channels: 16
Operating Voltage: 3.3-4.2V DC
Working Temperature:-20℃~+50℃

1. PTT
2. Light
3. Mic
4. Speaker
5. Antenna
6. Side key PTT
7. Channel +
8. Channel -
9. Power on/off switch
10. Volume Switch
11. Earphone Interface
12. Microphone Interface
13. USB Interface
14. Battery

Function Operation

Radio Information

1-Indicator
Green light flashes when radio is receiving. Red light flashes when radio is transmitting.

2-Channel Switch
Choosing desired channel to communication from 1-16.
When the UP button is pressed, increase the channel No.. When the DOWN button is pressed, the channel drops and recycled.

3-Power Switch
Press the power button about 2 seconds to turn on the radio. Press the power button about 2 seconds to turn off.

4-PTT
The radio has two PTT switches on the side and the front. Press PPT and face to microphone to communicate with the others. Red light flashes. Release PTT to receive and the green light flashes.

5-Monitor
Long press channel UP key can turn on monitor function.
Press it again to turn off the monitor function.

6-Squelch level
The purpose of the squelch is to mute the speaker when no signals are present Lower squelch level, high background noise hear. longer communication range, weaker the anti-inference.
Default squelch level is 5 and can be programmed level 0-9 by PC.
Level 0 is to open the squelch. The higher the selected squelch level. the stronger the signals must be when receiving.

7-TOT
This function can prevent users occupied the present channel for long time and limit TX time, meanwhile prevent radio from damage by long time transmitting If radio continue TX over the limit time (set by the programming software), radio will quit TX and sounds a warning sound. To stop warning sound, release the PTT, radio will back to the receiving state. When TX over time, through the bell to carry out early warning in advance(set by program software).

8-Scan
When the radio enters channel 16, it enters into the scanning function automatically.

9-CTCSS
Check the Hopping option of program, CTCSS can be programmed Non-standard TONE, increasing voice privacy.

10-Language
Please choose the desired language by PC program software.

11-Power Saving Function
Please select to active or disable the power save function by PC program software.

12-Battery Voltage Alert
When the battery voltage is lower than a certain level, the voice will sound "please charge", and prohibit transmitting.

13-Busy Channel Lockout
If radio programmed with BCLO, pressing PTT to prohibit TX after receiving the signal.

14-High /Low Power Switch
Radio default setting is high power. You can switch high /low power by PC programming software.

15-Wide/Narrow Band Selection(25.0KHz/12.5KHz)
Radio default setting is wide band. You can select wide /narrow band by PC programming software.

16-VOX
Enable or disable VOX by PC programming software. When your radio turn on the VOX function, talking to the microphone, then voice will be sent out; Stop talking, then radio will be in receiving state.when you use the earphone, need to adjust the VOX level in an appropriate level. If the microphone is too sensitive, the noise will activate transmitting; If the microphone is not sensitive enough, your voice will not activate transmitting. In order to communicate successfully, please adjust the appropriate level.

17-Scrambler
Enable or disable the scrambler by PC programming software. Scrambler function is one of encryption way. It through the spectrum to complete the purpose of changing the transmission spectrum and receiving the signal to restore, so as to achieve encryption effect.

18-CTCSS/DCS
You can set the CTCSS/DCS by PC programming software. When the channels are set the CTCSS/DCS, squelch can be turn on when received a signal with the same CTCSS/DCS. If the same channel uses a different CTCSS/DCS,the squelch can not be turned on and the light will be green.

19-Charging Indicator
The charger is charged by Android data line. When charging, the indicator light is red.

20-Channel Locking Function
Long press the channel DOWN key to hear the "beep" twice, then the channel is locked in the currently set channel. Long press the channel" DOWN" key to unlock the channel after hearing the sound of "di," and the channel switch can operate normally.

Troubleshooting

TECHNICAL SPECIFICATION

Note: The above specifications/technical instructions are for reference only because of the continuous improvement of the technology. Please refer to the physical object.