Silent and Robust: The Silent Power of Jammers Silence often carries the greatest power, and signal blocker are the embodiment of this silent power. They are silent, yet they have a firm grip on the electromagnetic space. It all starts with a simple, unobtrusive appearance. The body of the jammer may seem simple, but inside has been loaded with advanced circuitry and a powerful radio frequency source. They are not ostentatious, not ostentatious, just wait for the time is right, can quickly rele...