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VR-DB3R is the first dual-band full-duplex two way
radio in china,Full-duplex allows transmit and receive
to happen simultaneously,This is the first advantage
of DB3R,the Second,DB3R have meet IPX7 waterproof
protection,it can under 1 meter water 30 minutes.it
is the first waterproof IPX7 two way radio in china.The
Third,DB3R have channel lock Function,you can lock
any channel when you need,Other one,DB3R with the
40 mm microphone,,DB3R have so much new function ,like
Human voice prompt information function,auto connect
function,it is very useful,We will explain each function
as below:
 
1,Dual-Band Full-Duplex,Dual Frequency
,Dual Display .Dual Standby
- 136-174 & 300-350 MHz (TX/RX)
- 136-174 & 350-390 MHz (TX/RX)
- 136-174 & 400-470 MHz (TX/RX)
- 136-174 & 450-520 MHz (TX/RX)
- 136-174 & 245-246 MHz (TX/RX)
- 144-146 & 430-440 MHz (TX/RX)
2,Full-Duplex Communication in VHF and
UHF band Simultaneously.
- Full-Duplex Communication in VHF and UHF band
Simultaneously.It is alows Receive while transmit
3,IPX7 Waterproof protection
- The gasket sealed waterproof housing provides
superior waterproof protection, equivalent to
JIS Grade 7*. Reliable and dependable use in harsh
conditions such as rain, snow, sudden change in
temperature, make the VR-DB2R the radio for all
situations.
4,Human voice prompt information function
- Human voice prompt information function ,It
is easy to know the channel is for sb. and the
master information.
VR-DB3R offers Wide (25kHz) and Narrow(12.5kHz)
channel spacing. When the VR-DB3R is at duplexing
state,DB3R can automatically adjust the output power
according to the distance between the two two way
radio.and VR-DB3R with the Auto Contact Function,The
function is helpful for environments needing close
communication, such as climbing, exploration and
rescuing. The radio beeps when the user is being
out of communication range when this function is
ON.
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VR-DB3R Feature: |
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- 5W output power
- 128 memory channels
- Built-in 50 CTCSS
and 104 DCS
- Wide (25kHz) and
Narrow(12.5kHz) channel spacing
- programmable in
separate channels
- Come with 1500mAh
Li-ion battery
- High/Low Power Switchable
- Auto Contact Function
- Auto Output Power
When the Radio In Duplex Status
- Whisper Function
- Channel Lock Function
- 40 mm Loudly Microphone
- Sound Alarm
- Programmable by
PC software
- Priority Scan Function
- Adjust power High/Low
- Adjust squelch level
(0-9)
- Busy channel lockout
- Reverse Frequency
Function
- Channel step 5k,10k,6.25k,12.5k,25k
- FM radio
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| VR-DB3R Technical Indicators |
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| General |
Model |
VR-DB3R |
| Frequency
Range |
136-174
& 300-350 MHz (TX/RX)
136-174 & 350-390 MHz (TX/RX)
136-174 & 400-470 MHz (TX/RX)
136-174 & 450-520 MHz (TX/RX)
136-174 & 245-246 MHz (TX/RX)
144-146 & 430-440 MHz (TX/RX) |
Channel
Number |
16 |
Channel
Spacing |
5/6.25/25/12.5/50KHz
|
Maximum
Deviation |
?KHz to 25KHz
?.5KHz to 12.5KHz |
Frequency
Stability |
?.0ppm |
Operating
Voltage |
7.4V |
Battery
Type |
1500 mAh (Lithium
Battery) |
Operating
Temperature |
-30?~+60? |
Standby
Current |
50mA |
Antenna
Impedance |
50O |
Dimension(without
antenna&battery |
(L??) 106?3?9(mm)
|
Weight |
265g (with
antenna&battery) |
|
Transmitter |
Power
Output |
4W/1W |
Modulation |
16K?F3E/11K?F3E
|
Spurious
and Harmonious |
-36dBm<1GHz
-30dBm>1GHz |
FM
Noise |
40dB |
Adjacent
Channel Power |
70dB/60dB |
Audio
Distortion |
=5? |
|
Receiver |
Sensitivity |
0.25?(12dB SINAD)
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Selectivity |
60dB |
Intermodulation |
60dB |
Spurious
Response Rejection |
65dB/70dB |
Audio
Power Output |
500mW |
Audio
Distortion |
=3?(0.5W) |
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| Included
with the VR-DB3R: |
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- VR-DB3R Dual-Band Handheld
Radio
- 1500 mAh Rechargeable
Lithium Battery
- Rapid charger
- AC Charging Adapter
- Belt Clip
- Antenna
- Users' Manual
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