| 摘要 |
PURPOSE:To ensure the effective use of an electric wave, by receiving and transmitting the electric wave of the same frequency at different times through the receiving and transmitting parts, and providing a solid-state recording part which records digitally a received signal out of the receiving part, and transmits a signal out of transmitting part. CONSTITUTION:The electric wave of a receiving frequency f1 is demodulated at a receiving part 11 and turned into a received signal R. In this case, a received action signal (SQ signal) is supplied from the part 11 and fed to a control part 44 together with the signal R. The part 44 decides the start of recording with an AND of the start signal of the signal R and the SQ signal. Then the part 44 delivers a record instruction signal WR to a solid-state recording part 33. The part 33 converts the signal R into a digital signal and starts recording. The part 44 delivers a reproducing instruction RE to the part 33, and the part 33 delivers successively the contents of record in the form of transmission signals S. In response to the start of this action, the part 44 transmits the signal S to a transmitting part 22 by a transmitting instruction PT and with the frequency f1. An antenna switching part 55 is switched to the side of the part 22 by the part 44 together with the output of the instruction RE. |
