RADIO COMMUNICATION SYSTEM

PURPOSE:To prevent the reduction in the burst utilizing efficiency caused in use with a scanning beam antenna by transmitting always a frame synchronizing signal and a clock reproducing signal to plural stations to simplify the equipment in the plural stations. CONSTITUTION:A data signal is inputted to a terminal A and a frame synchronizing signal is inputted to a terminal B. A pulse speed of the frame synchronizing signal is slower than the pulse speed of a data signal and selected as a speed below one over several, for example. When a frame synchronizing signal is kept transmitted continuously for full time as the clock reproducing signal, the frame synchronizing signal is used as the clock reproducing signal and when the frame synchronizing signal is transmitted intermittently, the clock reproducing signal is added successively. Further, a narrow channel 13 has a large power per 1Hz because the band is narrow and even when the power is irradiated by a wide antenna beam with low directivity gain, the S/N equal to or over the broad band channel 14 is obtained when the beam is received by plural stations 2.