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BA7IA:从主板的电路图来分析,从功放板送来的入/反射信号先被运放Q1111/NJM29002V放大,再被送到一个二选一电子开关D1066/BU4053BCFV与接收场强等显示信号进行切换,然后被送到CPU进行A/D转换处理和显示。 .. (2019-04-12 15:28)