Accession Number : ADD008316

Title :   Countermeasures System.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON DC

Personal Author(s) : Weiss,Gerald ; Scharf,Gerson ; Guido,Anthony A ; Lazardwitz,Benjamin

Report Date : 26 Aug 1980

Pagination or Media Count : 4

Abstract : This invention relates to a countermeasures system and method for use against frequency shift keyed (FSK) radio-teletype transmission. It is the purpose of this system to overcome the problems of previously known countermeasures systems, by making much more efficient use of the power transmitted in the countermeasure signals, and by rendering the countermeasure signals very difficult for the victim to detect. A method for jamming frequency-shift-keyed radio teletype signals which comprises: 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.

Descriptors :   *Patents, *Radio jamming, *Frequency shift keyers, *Teletype systems, *Radio equipment, Frequency shift, Currents, Pulses, Countermeasures, Inventions, Signals

Subject Categories : Radio Countermeasures
      Radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE