FIELD: radio engineering.
SUBSTANCE: invention relates to the field of radio engineering. The result is achieved by expanding the frequency spectrum and limiting the demodulation energy threshold for third-party electronic equipment. The subcarriers of the FSK signal are formed in the spectrum of the frequency modulation signal, provided that the width of the spectrum of the latter is at least ten times the width of the spectrum of the FSK signal, which leads to the transformation of the discrete shape of the spectrum into a continuous one.
EFFECT: increasing the noise immunity of signal reception under conditions of interference from third-party radio-electronic means, consistent with the spectrum of the useful signal.
1 cl, 1 dwg
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