Several countries vying for supremacy in electronic jamming

The jamming problem has been getting worse in recent years. Russian and Chinese forces have deployed increasingly powerful electronic warfare gear in the air, on the ground, and at sea—all aimed at denying the radio frequency, or RF, to the US military.

The Americans are uniquely vulnerable to RF jamming, as many US war-fighting concepts rely on the ability of ground forces, aircraft and warships to exchange information via radio networks.

In order to disrupt the satellite signal, a cell phone jammer must be operating within the same beam as the signaling drone, explained Butler. While this was easy when beams span entire continents, it is much more difficult when the jammer must be within the exact 600 miles of the same spot-beam as the drone.

The digital payload essentially allows you to disconnect the up link signal from the down link signal,” Butler explained. So if somebody is jamming the signal, we can just disconnect that jammed signal, find the UAV a new frequency, and reestablish a link, essentially neutralizing the jamming signal…

Much can be lost by not at least exploring the viability of a state-run gsm signal jammer initiative aimed solely at inmates. Much might also be gained, for the safety of hundreds upon hundreds within the prisons and, certainly, on the outside.

Governor from 2003 to 2011, Sanford was South Carolina’s top politician when one of the state’s prison officers was nearly killed in a hit authorities said was orchestrated by an inmate using a cell phone behind bars. In 2010, Sanford stood with Correction Capt. Robert Johnson to call on FCC officials to act on a petition to let the state start a pilot signal jamming program.

Ships use GPS (Global Positioning System) and similar devices that rely on sending and receiving satellite signals, which are vulnerable to wifi jammers device by hackers.Last year, South Korea said hundreds of fishing vessels had returned early to port after their GPS signals were jammed by hackers from North Korea, which denied responsibility.