FIELD: radio engineering; data transmission systems. SUBSTANCE: proposed device provides for concurrent transmission of narrow-band analog signal and low-speed digital signal transferred by using broadband phase-keyed signal in common frequency band allocated for this channel. Device has lowfrequency amplifier, modulator, exciter, power amplifier, two antennas, two frequency synthesizers, high-frequency amplifier, intermediatefrequency channel, demodulator, adder, two delay elements, two multipliers, rejection filter, switch, broadband phase-keyed signal receiver, broadband phase-keyed signal receiver, broadband phase-keyed signal shaper, and broadband phase-keyed signal copy shaper. EFFECT: provision for hidden transmission of analog and digital signals, elimination of their relative influence, enhanced noise immunity in digital signal transmission. 4 dwg
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