Thread: What causes the whining noise on the radio?
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Old 09-12-2017, 03:16 PM
  #4  
PerfInit
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Joined APC: Oct 2008
Position: JAFO- First Observer
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Often it is old Mad Dogs and their 400hz AC (CSD) Generators "hum"which gets picked up from the interphone system and/or headset wiring...
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