FIELD: radio communications.
SUBSTANCE: following parts are additionally introduced into the radio communication system with noise-like signals: a harmonic signal generator (6), the output of which is connected to the input of a power amplifier (3); the receiving part has serially connected narrow-band filter (8), amplifier block (9), second intermediate frequency amplifier (10), logarithmic detector/controller (13), direct current amplifier (12) and low-pass filter (11), as well as adjustable attenuator (15), the second input of which is connected to the output of the low-pass filter, the output of the mixer (14) is connected to the input of the narrow-band filter and the first input of the adjustable attenuator, the output of which is connected to the input of the first intermediate frequency amplifier (16).
EFFECT: prevention of the influence of narrow-band interference, which exceeds the useful signal in power, on the gain of the intermediate frequency amplifier.
1 cl, 2 dwg
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