| 摘要 |
PURPOSE:To stabilize a transmitter even in case of a short time from data reception to data return by discriminating whether there is probability that a data signal is returned to the destination station before complete analysis of the received data signal or not to raise the transmitter. CONSTITUTION:In the stage of analysis of the received data signal in a reception part 1, power is supplied to a transmission part 12 at the time when there is probability that this transmitter-receiver must return the data signal. Therefore, the transmission part 12 is already raised to send out a stable transmission frequency when the data signal is returned. Thus, the stable transmission frequency is obtained though the time from the waiting state to return of the data signal is short, and unnecessary power is not supplied.
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