300W High Power Signal Jammer Waterproof For Blocking NMT CDMA
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Basic Infomation
Place of Origin: China
Certification: ROHS/FCC/ISO 9000
Model Number: JM110840
High Light:

cell phone signal jamming device


cell phone reception blocker

Payment & Shipping Terms
Packaging Details: Carton with Netural Packing
Delivery Time: 1-3 Working Days
Payment Terms: T/T, Western Union, MoneyGram, Paypal,L/C
Supply Ability: 5000pcs per month
Total Output Power: 300W
Total System Weight: Approx 60 Kg
Humidity: Up To 80%
Operation Temperature:: -20 ...+50 Centigrade Degree
Antenna Type: 6pcs External( 2-3dBi ) Omnidirectional ( Standard )
Size: 56*46*27 Cm
Product Description

300W VHF UHF Jammer High Power Signal Jammer NMT CDMA Single Waterproof Jammer



At a Glance


  • Can be fixed in car and temporary occasion.
  • Frequency band is optional.
  • 6 modules are controlled separately and also can work simultaneously.
  • Each module with antenna can be used as a single jammer.
  • The pelican case is portable (can be carried like a suitcase).
  • With excellent heat dispersion.
  • Housing Waterproof & shockproof design suitable indoor or outdoor use




6 Bands Walky-talky (VHF)

Walky-talky (UHF/300MHz)/135-155MHz

Walky-talky (UHF/350MHz)/155-175MHz

Walky-talky (UHF/400MHz)/300-350MHz

Walky-talky (UHF/450MHz)/350-400MHz

Cellular NMT/400-440MHz

Cellular CDMA 450/440-480MHz

Total Output Power 300W
Shielding Range

300 to 500m ( signal strength <=75dbm

Control Each bands can work independently
Operation Temperature -20 ...+50 Centigrade degree
Humidity Up to 80%
Antenna Type 6pcs External( 2-3dBi ) omnidirectional ( Standard )
Total System Weight Approx 60 kg (with omni directional antennas.)
Size 56*46*27 cm




  • High Power Signal Jammer
  • Power cable
  • Antennas


Important Notes: Before turn on the jammer, you MUST install the antennas according to the mark indicated on the main unit.


Important Notes for Jamming Distance: The jamming distances we mentioned on website are for customer's reference only. The actual jamming distance will be varied depending on the signal strength and the use location and if full charges, etc.

Important Notes for Portable Jammers with No Cooling Fan: Do not use the jammer when it is charging, or it will burn the jammer as it has no built-in fan. If because of this factor due to the broken of the jammer, the customer will lose the authority of free repairation .


300W High Power Signal Jammer Waterproof For Blocking NMT CDMA 0

300W High Power Signal Jammer Waterproof For Blocking NMT CDMA 1


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