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1.本试验的目的中波是广播宣传的主要波段,但是这个波段容量较小,电台多,十分拥挤。多年来广播事业发展的实践证明,仅仅依靠提高发射机的功率,不可能有效地解决中央台和省台中波广播覆盖的问题,也不能有效地对抗同频干扰。解决这些问题的有效途径是增设转播台,以大、中、小功率的机器相结合,合理布局,采取地波覆盖的方针。同时,有必要发展同步广播。
1. The purpose of this experiment Wave is the main wave of radio and television broadcasting, but this band capacity is small, radio and more crowded. The practice of the broadcasting industry over the years has proved that it is impossible to effectively solve the problem of radio coverage in the central and provincial stations and the effective countermeasures of co-channel interference simply by increasing the power of the transmitter. An effective way to solve these problems is to set up a retransmission station to combine the large, medium and small-power machines with a reasonable layout and adopt the principle of ground wave coverage. At the same time, it is necessary to develop simultaneous broadcasting.