how to jam cell phone reception

Brand Name:GREETWIN

Model Number:GW-JC8

Place of Origin:Shenzhen,China

... jammer feature. or use directional panel antenna, This helps focus the jamming wave on desired areas only. Long time will be taken to recall what you have though if you are suddenly interrupted by the mobile phone calls of someone at the meeting,

Brand Name:VBE

Model Number:VBE-50P

Place of Origin:China

Single Band Medium Power Signal Jammer , Cell Phone / Wifi Signal Prison Cell Phone Jammers VBE-50P Jammer Instructions: The VBE-50P is a Single Band Medium Power Signal Jammer, with one output port to jam special RF frequency, uses state-of-art technology...

Brand Name:vodasafe

Model Number:PJ6100N02

Place of Origin:China

Waterproof 100 Each Band Cell Phone Jammer Mobile 3G 4G Frequency Blocker for Sale Prison Jamming System VodasafePJ6100N Brief Description: 200M jamming radius range prison signal jammer with 50dBM output power, the jammer consists of 5 independent power ...

Brand Name:ChingKong

Model Number:Signal Jamming Device

Place of Origin:China

10 antennas Mobile phone Signal Jammer For GSM 3G 4GLTE signal Block WIFI2.4G UHF/VHF Walkie-Talkie Signal Product Information Name: Indoor Using 10 antennas Mobile phone Signal Jammer For GSM 3G 4GLTE signal Block WIFI2.4G UHF/VHF Walkie-Talkie Signal ...

Brand Name:Wolvesteam

Model Number:WT700205

Place of Origin:USA

Military 600W RF Signal Vehicle Bomb Jammer Cell Phone Signal Jammer With DDS Convoy Jamming System Product description : This device is not only bomb jammers, but also high power portable DDS convoy jamming system, portable RF jammer,portable vehicle bomb...

Brand Name:Wolvesteam

Model Number:WT700327

Place of Origin:USA

Military Portable VIP Protection Defence Cell Phone Signal Vehicle Bomb Jammer Product description : This device is not only bomb jammers, but also high power portable DDS convoy jamming system,portable RF jammer,portable vehicle bomb jammer. This jammer...