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1 频率失谐故障现象ＮＯＡＡ卫星接收机中频分机正常工作状态应该是卫星未入境前,手动调整“增益控制”旋钮,由小至大在“信号强度”电表上指示的干扰杂波(常称毛草)电平幅度在0-40μＡ范围内可调;卫星信号进入中频分机后,信号强度表头指针迅速上升到30μＡ以上直至信号最强时
1 frequency detuning fault phenomenon NOAA satellite receiver IF extension of the normal working state should be before the satellite is not in the country, manually adjust the “gain control” knob, from small to large in the “signal strength” meter indicates the interference clutter Grass) level range 0-40μA adjustable; satellite signal into the IF extension, the signal strength meter pointer quickly rose to 30μA or more until the signal strongest