FIELD: TV equipment. SUBSTANCE: device for formation of disturbance signal includes signal source 1, aerial 2, videorecorder 3, main cable 4, main coupler 5, amplifier 6, amplifier-distributor 7, disturbance forming unit 8, controlled frequency-selective modulator 9, storage 10. EFFECT: reduced probability of unauthorized access. 3 dwg
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Authors
Dates
1994-01-30—Published
1990-03-07—Filed