FIELD: radio engineering; communication.
SUBSTANCE: invention is intended for protection against radio-controlled explosive devices by blocking unauthorized transmission of radio fuses control information over a radio channel, and can also be used to protect against unauthorized transmission of information over a radio channel in the range of previously unknown radio frequencies. Device comprises series-connected non-linearly varying voltage generator, voltage-controlled generator, first and second amplifiers, first and second gates, first and second antennae, third, fourth and fifth signal amplifiers, third, fourth and fifth gates, third, fourth and fifth antennae, and four signal frequency multipliers. Voltage-controlled generator generates harmonic signal, frequency of which continuously varies over a period of time according to a law determined by the shape of the output signal of the non-linearly varying voltage generator.
EFFECT: increased probability of radio suppression due to synchronization of interference signals in protected ranges.
1 cl, 1 dwg
