Retevis RT618 Mode D'emploi page 4

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
Symptom
No power
attery lasts a short time
B
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
5
Hearing other conversation
on a channel (not group
members')
TECHNICAL SPECIFICATION
General Specifications
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.
Please change code settings,
including all two way radio
settings
PMR446
16
12.5KHz
3.7V DC
-20℃--+50℃
50Ω
≤0.5W
≤5KHz/≤2.5KHz
±5ppm
≤-65dB/≤-60dB
≥-45dB/≥-40dB
≤5%
≤1.45A
-122dBm(12Db SINAD)
0.33-0.37W@3.7V
≤5%
55dB
50dB@12.5KHz 55dB@20/25KHz
3.5KHz@12.5KHz 7KHz@25KHz
≤70mA
6