| 摘要 |
FIELD: radio communications. SUBSTANCE: radio set has omnidirectional antenna connected via coaxial cable line and antenna diode-capacitor switch to radio receiver and radio transmitter; in addition, it is provided with amplifier, AND circuit, clock generator, transmission channel converter, receiving channel converter, digital-to-analog converter, analog-to-digital converter, filter unit, ten external operator stations. Transmission channel converter has ten data pulse shapers, ten stepless tuning delay lines, nine digital delay lines, ten flip-flops, OR circuit, pulse counter; each data pulse shaper has multivibrator, six AND circuits, two storage locations, NOT circuit, flip-flop, inverter, OR circuit. Filter unit has in each receiving channel rejection filter, band filter, and amplifier; in each transmitting channel, it has amplifier and circuit selector switch. Receiving channel converter has ten channel data shapers, ten AND circuits, ten channel selection units, ten channel adders. Channel data shaper has five AND circuits, two one-shot multivibrators, NOT circuit, three flip-flops, two storage locations, three pulse counters, OR circuit. Channel adder has two AND circuits. Channel unit has flip-flop, two differentiating circuits, two valves multivibrator, two delay lines, OR circuit, one-shot multivibrator, integrating circuit, AND circuit, and NOT circuit. Radio set provides for duplex communication with ten distant stations simultaneously a^ single frequency and into signal antenna by alternate switching of receiver and transmitter into single antenna using automatic T-R switches. Data exchanged is compressed and each channel is assigned 100 ms of second period; transmitting pulse in each channel has same length of one millisecond. EFFECT: provision for radio set operation at single frequency and improved radio communication speed. |
