1. A repeater comprising an antenna system, a repeater loop consisting solely of broadband elements for coupling the input signal from the input to the output thereof without changing the frequency of the signal at any place in the loop, said elements including at least one broadband translation device, means coupling the input and output of said repeater loop to said antenna system to receive incoming signals and for retransmitting said signals, and means for communicating through said repeater including a source of local intelligence signals, a source of a local carrier wave, means coupling said wave source to said loop at a point ahead of said translation device and means coupling the source of local intelligence signals to said translation device to modulate said local carrier wave.
4219891 - Countermeasures system - Owned by The United States of America as represented by the Secretary of the Army (Washington, DC)
1. A method for jamming frequency-shift-keyed radio teletype signals which omprises: receiving said frequency-shift keyed signals; converting said signals to teletype current pulses; modification of selected ones of said teletype pulses; converting said modified teletype current pulses to frequency shifted signals; and transmitting said converted modified pulses.
