| 摘要 |
A communication system for simultaneous exchange of signals between first and second stations in which a timing signal of low frequency alternately switches a first station between receive and transmit with equal time periods and simultaneously switches a second station between transmit and receive with the same time periods. During a receive period, signals for transmission are delayed until the next transmit period. During the transmit period, the delay signal is combined with the signal occupying the transmit period. The combined signal along with the timing signal is transmitted by the first station to the second station, after which the first radio station switches to receive under control of the timing signal. The second station under the control of the same timing signal now transmits a similar combined signal which is received by the first station for processing. At the first station, the combined interrupted and uninterrupted signals are separated to provide a continuous signal which is then passed through an amplifier to a transducer or other device. In the same way, the second station also outputs a continuous signal to a transducer or similar device. Thus, simultaneous exchange of signals between the first and second stations is provided.
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