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Old September 3rd, 2008, 01:31 PM
greghirst greghirst is offline
Greg Hirst
Join Date: Sep 2003
Posts: 2,290
You said you had your alternator checked? Did they check ground connections too? Check radio grounding as well.

Not sure what the amp draw is for the ICOM but perhaps the additional draw is causing a worn alternator bearing or belt tensioner bearing to whine?
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