FIELD: radio engineering. SUBSTANCE: radio beacon has control unit, indication unit, operating condition switch, source of speech signal, power supply unit, automatic feeder of telephone signals, microphone amplifier switch, aerial lead-in, master oscillator, modulator, power amplifier, emergency aerial built in the form of inductance coil, brass tube, current pickup, error evaluation unit, amplifier, capacitive divider, amplifier, comparator, reference voltage pickup. EFFECT: improved efficiency in generation of emergency signals under water. 2 cl, 8 dwg
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