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| Normal two way radio is a Half-duplex,only
one direction at a time (not simultaneously). Actually,once
a party begins receiving a signal,it must wait for
the transmitter and stop transmitting before replying.But
our new product of dual band duplex radio solved
the above problem.It? working type is full-duplex,it
allows communication in both directions(allows receiving
and transmitting to happen simultaneously). Land-line
telephone networks also are full-duplex.It allows
both callers to speak and to be heard at the same
time. A good analogy for a full-duplex system would
be a two-lane road with one lane for each direction.
Below is the Difference of Half-Duplex and Full-Duplex
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| Dual
Band Pocket Radio UV-X4 |
- Dual-Band
,Dual Frequency,Dual-Display,Dual-Watch
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Frequency Range:136-174&400-470
MHz
- Output
Power: 2 Watts
- 99
Channels + 1 Emergency
Channel
- 50
CTCSS And 104 CDCSS
- Built-in
Vox Function
- 1750
Hz Brust Tone
- FM
Radio
- LED
Flashlight
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| Dual
Band Pocket Radio UV-3R |
- Dual-Band
,Dual Frequency,Dual-Standby
-
Frequency Range:136-174&400-470
MHz
- Output
Power: 2 Watts
- 99
Channels + 1 Emergency
Channel
- 50
CTCSS And 104 CDCSS
- Built-in
Vox Function
- 1750
Hz Brust Tone
- FM
Radio
- LED
Flashlight
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| Dual
Band Two Way Radio VR-DB2R |
- Dual-Band
Full-Duplex,Dual Frequency
- 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)
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5 W Output Power
- 128
Memory Channels
- Full-Duplex
Communication in VHF
and UHF band Simultaneously.
- IPX7
Waterproof protection
- Human
voice prompt information
function
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Dual Display .Dual Standby
- Whisper
Function
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Auto Output Power When
the Radio In Duplex
Status
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| Dual
Band Two Way Radio VR-DB3R |
- Dual-Band
Full-Duplex,Dual Frequency
- 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)
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5 W Output Power
- 16
Memory Channels
- Full-Duplex
Communication in VHF
and UHF band Simultaneously.
- IPX7
Waterproof protection
- Human
voice prompt information
function
- Whisper
Function
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Auto Output Power When
the Radio In Duplex
Status
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