| Customization: | Available |
|---|---|
| Certification: | FCC, ISO, RoHS, CE |
| Communication Distance: | >12km |
|
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JmTech Citizen band Handheld two way radio 40 Channels MR999 PRO car charger Walkie Talkie with LED display Portable transceiver CB270
Product Description
Main Features
*CB frequency
*40Channels
*4Wattes Power output
*Easy to use,not need program
*Channel Scan
*Large LCD Display with Back light
*NOAA Weather Radio
*Emergency Channel
Specification
| Channel | 40FM |
| Frequency range | 26.565-27.99125MHz |
| Operating mode | F3E(FM); A3E(AM) |
| Antenna impedance | 50 ohm |
| Loudspeaker | 0.5W 8ohm |
| Microphone | condenser type |
| Power supply | 7.2-13.2 nom 12V |
| Dimensions |
30*70*140mm |
| Weight |
220g(without battery) |
Receiver
| Sensitivity at 10dB S/N | 0.5uV(AM); 0.25uV(FM) |
| Selectivity | more than 60dB |
| Squelch range | 0.25V-500uV |
| Audio output power | 0.5W 8ohm (10% distortion) |
| Distortion at 1000uV | 3% |
| Audio frequency response | 400-2400Hz |
| Spuriour response | More than 60dB |
| Current drain at standby | 100mA when the save mode is off |
| 45mA when the save mode is on |
Transmitter
| RF Output power | Duty cycle 10% 4W AM/FM |
| Frequency Tolerance | 0.005% |
| Harmonic Suppression | More than 70dB |
| Current Drain | 900mA |
| Modulation | AM 90% (5%) |
| FM dev.2.0KHz |
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FAQ
1.Q: Why sometimes your partner's voice is intermittent?
A: Please note that you are within normal communication range, If you want use radio in distance range, please change other antenna with a bigger output power.If still same problem,please send the radio back to your authorized dealer repair.
2.Q: Can't turn on talky and even it is switch on, it often shuts off automatically?
A: Please check the battery contacts on the walkie talkie. If it is broken or twisted, please return the radio to your authorized
dealer for maintenance during warranty.
3.Q: Can't transmit or receiver signal with other members?
A: First, please verify that the channel frequency and the CTCSS you are used the same as those of your group members.
Please make sure that you and your partners are all withinthe radio coverage, If the channel frequency and the CTCSS
are the same.
4.Q: Why sometimes received voice from other groups?
A: Two way solutions.You can change another channel or change another channel frequency by PC software.
5. Q: Which is better -VHF or UHF?
A: epends on the terrain. The UHF signal is attenuated or absorbed by foliage, rough terrain and trees, VHF does better
outdoors. The VHF has difficulties penetrating steel and concrete, UHF does better in and around buildings. If you use
the radios in both environments, we prefer using UHF band.
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