Retevis RT18 User manual

MADE IN CHINA
7/F, 13-C, Zhonghaixin Science&Technology Park, No.12 Ganli
6th Road, Jihua Street, Longgang District, Shenzhen, China
Web: www.retevis.com
E-mail: [email protected]
Facebook: facebook.com/retevis
RT18
Two Way Radio
User’s Manual
us

English
1
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℃
2

English
1
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℃
2

3 4
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
Function Operation
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.

3 4
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
Function Operation
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.
56
FRS
16
12.5KHz
3.7V DC
-20℃--+50℃
50Ω
≤2W
≤5KHz/≤2.5KHz
±5ppm
≤-65dB/≤-60dB
≥-45dB/≥-40dB
≤5%
≤1.45A
-122dBm(12Db SINAD)
[email protected]
≤5%
55dB
[email protected] 55dB@20/25KHz
[email protected] 7KHz@25KHz
≤70mA
TECHNICAL SPECIFICATION
Frequency
Channels Capacity
Channels Spacing
Operation voltage
Operation temperature
Antenna impedance
Transmitter Specifications
RF Power
Maximum deviation(W/N)
Frequency stability
Adjacent channel power
SNR(W/N)
Audio Distortion
Transmission current
Receiver
Sensitivity
Audio power
Audio distortion
Inter modulation
Adjacent channel selectivity(W/N)
Modulation Acceptance
Receiver current
Note: The above specifications/technical instructions are for reference
only because of the continuous improvement of the technology. Please
refer to the physical object.
General Specifications
Symptom
No power
Battery lasts a short time
after charge
Can not talk to other
members of your group.
Try This
Battery power may have run
out, please update battery or
recharge it.
Battery may not be properly
installed, please take it off and
re-install.
The battery life is over, please
replace new battery.
Verify transmitting is within
effective operating range.
Verify channel, frequency and
Troubleshooting
Hearing other conversation
on a channel (not group
members’)
Please change code settings,
including all two way radio
settings

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.
56
FRS
16
12.5KHz
3.7V DC
-20℃--+50℃
50Ω
≤2W
≤5KHz/≤2.5KHz
±5ppm
≤-65dB/≤-60dB
≥-45dB/≥-40dB
≤5%
≤1.45A
-122dBm(12Db SINAD)
[email protected]
≤5%
55dB
[email protected] 55dB@20/25KHz
[email protected] 7KHz@25KHz
≤70mA
TECHNICAL SPECIFICATION
Frequency
Channels Capacity
Channels Spacing
Operation voltage
Operation temperature
Antenna impedance
Transmitter Specifications
RF Power
Maximum deviation(W/N)
Frequency stability
Adjacent channel power
SNR(W/N)
Audio Distortion
Transmission current
Receiver
Sensitivity
Audio power
Audio distortion
Inter modulation
Adjacent channel selectivity(W/N)
Modulation Acceptance
Receiver current
Note: The above specifications/technical instructions are for reference
only because of the continuous improvement of the technology. Please
refer to the physical object.
General Specifications
Symptom
No power
Battery lasts a short time
after charge
Can not talk to other
members of your group.
Try This
Battery power may have run
out, please update battery or
recharge it.
Battery may not be properly
installed, please take it off and
re-install.
The battery life is over, please
replace new battery.
Verify transmitting is within
effective operating range.
Verify channel, frequency and
Troubleshooting
Hearing other conversation
on a channel (not group
members’)
Please change code settings,
including all two way radio
settings