FIELD: electric and radio communication, wire, radio, radio relay and meteor communication lines with backward channel or without it. SUBSTANCE: facility to receive start-stop messages has receiver, frequency discriminator, signal selection and synchronization unit, clock pulse oscillator, decision-making unit, first and second keys, storage, squarer, storage circuit, gated threshold unit, pulse counter and scaling unit. EFFECT: diminished probability of false operations. 2 dwg
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Authors
Dates
2003-08-10—Published
2001-04-25—Filed