A cell phone jammer prevent and disable any mobile telephone communications into specific areas of a building or in open space to....
Prevent industrial espionage where mobile units are used as bugging devices or used to take pictures(camera phones)
Counter terrorism threats such as remotetly detonated bombs in high risk areas
Eliminate public nuisance in places like movie theaters, restaurants and church
How it works
Cellphones are 2-way radios which communicate through cell towers. A cell phone jammer work by sending strong signals over the same frequencies used by mobile units to effectively disrupt the communication between the device and the cell tower. The result is an unworking mobile unit displaying "no network" .
Physical Description
It comes in different sizes and shapes.Some are pocket size, some are much bigger.Some are disguised as regular cellphones, or brief cases.
Considerations before buying a cell phone jammer:
What is the Effective jamming range (10-50+ meters)
Which Cellular systems it can block(cdma for north america ,gsm for europe & asia, tdma, 3G amps,pcs,dcs or All?)
How many cellular systems(cdma etc..) it can block at the same time(low end models only block 1 type at once while more sophisticated ones will block several systems at once)
Appearance:regular unit or disguised as another type of device ?
Size & weight
Is it legal to own and operate in your country?
Recommendations:
Disguised Quad-band cell jammer
Covert.Looks just like a high tech mobile unit
Jamming range: 15 metres diametre
cdma,gsm,tdma,amps,pcs,dcs
Can block 4 cellular systems(gsm etc..) at once
Fully Rechargeable
High Power Quad-band cell jammer
Jamming range of up to 30 metres in diametre
cdma,gsm,tdma,amps,pcs,dcs,iden,nextel
Can block 4 cellular systems(cdma etc..) at once
can be fixed to a wall
295usd
Note: The real world blocking range will depend on the type of cellular system and location of cell base stations.Of course the further away from the nearest cell base, the greater the jamming range of a cell phone jammer.
