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我台故事频率585kHz使用的备机是九十年代初投入使用的PDM-10脉宽调制发射机,已经使用10年了,逐步老化。近几年来,该频率的主机DX-50发射机经过十年的运
The preparation frequency of 585kHz used by Taiwan is the PDM-10 pulse width modulation transmitter put into operation in the early nineties. It has been used for 10 years and gradually aged. In recent years, the frequency of the host DX-50 transmitter after ten years of operation