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adc輸入受CB radios影響

日前設計一片具幾路AD輸入LED電壓輸出的電路板,原本測試準度都正常,但接到卡車駕駛位置上,發現對講機按壓發話時(136-174Mz or 400-512Mhz)AD讀取的AD值會受影響(影響很大數值亂跑),
1.請問各位在設計經驗中有碰過這種狀況嗎?
2.可能原因為何?
3.有無建議的解決方案?

初學者麻煩幫忙…