| 摘要 |
PURPOSE:To continue an AFC function even if abnormality occurs in a reference pilot signal by adding a specified timer circuit, and changing a control method as following this addition. CONSTITUTION:The timer circuit 1 which recognizes correctly time at which transmitting frequency information stored 24 hours before is read out from a storage circuit 4 installed in a tranmitting frequency correcting means and the period of time after that until the reference pilot signal is restored, and informs the time at which the transmitting frequency correcting means executes AFC operation in the case that the reference pilot signal is not received is provided. Thus, since even in the case that the abnormality occurs in the reference pilot signal to be received, the time to the restoration can be correctly recognized, and the time of the use of frequency correction data 24 hours before is correctly switched to normal frequency correcting time, and the AFC function is continued. |
