Abstract: A system and apparatus which permits an existing communication device, such as a common smart phone, to have satellite communication capabilities. The apparatus can include a transmitter/receiver which can relay communications and data, between the existing communications device and a satellite network. Optionally, the data can be encrypted before being sent over the satellite network. Optionally, the transmitter/receiver can have a distress activation input which can automatically emit an SOS signal along with the transmitter/receiver's current GPS coordinates when a user activates the input.

Abstract: The present invention relates to an apparatus and a method for detecting and displaying the existence of a jamming signal. An antenna receives a signal on a predetermined frequency, and an amplifier receives and amplifies the signal from the antenna. A microprocessor determines the existence and magnitude of the jamming signal related to the predetermined frequency and processes an output to a display device to display the existence of the jamming signal to a user.

Abstract: A method and apparatus for broadcasting electromagnetic waves such that user-selected electromagnetic receivers are prevented from receiving an intended electromagnetic communication. Such device can be used to jam detonation of remote controlled explosive devices. The device can be portable or stationary, is preferably programmable, is low cost, and can be used by untrained personnel.