Jammer Signal Protect Your Private Encounters

GSM is the most commonly used frequency range for cell phone networks and mobile communications. It includes four main bands (850 MHz, 900 MHz, 1800 MHz, 1900 MHz) and many smaller standards used in different countries of the world (for example, UMTS, CDMA2000, Nextel, TDMA, AMPS, W-CDMA PCS etc.). Among communication standards 3G must be mentioned separately because it is not only a modern communication frequency but it can also be used with other purposes. Unfortunately, both GSM and 3G frequency bands are used not only to make your life much easier and more interesting, but with bad intentions as well. To jam GSM or 3G frequencies you can choose a portable or a desktop GSM jammer. The difference between these two types of GSM jammers is that the portable 3G jammers are operating in radius up to 15 meters, while the jamming radius of desktop 3G GSM CDMA jammers can be up to 200 meters

These days technology of cell phone tower triangulation is quickly spreading across mobile gadgets and tracking devices. This technology allows any tracking device to use three cell phone towers located closest to you to calculate your coordinates at the crossing of their working ranges. So law enforcement agencies can use this technology to find out where you are even if you have no GPS module in your smartphone or if they have not placed GPS tracking device under your car.

3G frequency can also pose a threat to your wireless security. With its help some hidden cameras stream video; people are getting access to the wireless internet in places, where according to security policies should be no wireless networks at all, and your smartphone might be probed in a manner like Trojan viruses probe PCs. So you can use devices from this category to protect yourself from all those threats.

Cell phone jamming devices were originally developed for law enforcement and the military to interrupt communications by criminals and terrorists. The bombs that blew up commuter trains in Spain in March 2004, as well as blasts in Bali in October 2002 and Jakarta in August 2003, all relied on cell phones to trigger explosives. It has been widely reported that a cell-phone jammer thwarted an assassination attempt on Pakistani President Musharraf in December 2003. When President Bush visited London in November 2004, it was reported that British police considered using jammers to protect the president's motorcade through London.

During a hostage situation, police can control when and where a captor can make a phone call. Police can block phone calls during a drug raid so suspects can't communicate outside the area. Cell-phone jammers can be used in areas where radio transmissions are dangerous, (areas with a potentially explosive atmosphere), such as chemical storage facilities or grain elevators. The TRJ-89 jammer from Antenna System & Supplies Inc. carries its own electrical generator and can block cellular communications in a 5-mile (8-km) radius.

Corporations use jammers to stop corporate espionage by blocking voice transmissions and photo transmissions from camera phones. On the more questionable end of the legitimacy spectrum, there are rumors that hotel chains install jammers to block guests' cell-phone usage and force them to use in-room phones at high rates.