【摘 要】
：
我省某台四部10kW调频差转发射机和五频道7.5kW电视发射机同在一个机房内。电视发射机开机后,严重干扰调频发射。曾做过这样的实验:当调频机调到指标时,前站调频机关机后,开
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我省某台四部10kW调频差转发射机和五频道7.5kW电视发射机同在一个机房内。电视发射机开机后,严重干扰调频发射。曾做过这样的实验:当调频机调到指标时,前站调频机关机后,开启电视发射机,这时调频机限放第一级的栅流表指示可达到60μA。即使前站有信号,转播出来后也是一片噪声,无法收听。因此,以前为了防止五频道电视干扰,将调频差转机的高放、第一中放各级槽路调偏。
Taiwan’s four 10kW FM transmitter and five-channel 7.5kW TV transmitter in the same room. TV transmitter is switched on, a serious interference FM launch. Have done such an experiment: When the FM machine transferred to the indicator, the former station FM machine is turned off, turn on the TV transmitter, then the FM limit the first level of the flow meter indication can reach 60μA. Even if there is a signal before the station, is also a noise after the broadcast, can not listen. Therefore, in the past in order to prevent the interference of the five-channel television, the FM radio high-level transfer, the first release at all levels of channel offset.
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