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Skywave · 9th Oct 2017, 7:37 pm

Doesn't immediately answer your Q., but the common factor would seem to be the mains supply and the wiring to the two items of electrical equipment. An earthing problem? I also assume that the wiring to your microphone is well screened.

Having said all that - yes, the phenomenon you describe is very strange!

Al.

9th Oct 2017, 7:37 pm	#3
Skywave Rest in Peace Join Date: Jun 2006 Location: Chard, South Somerset, UK. Posts: 7,457	Re: Strange phenomenon involving CFL bulb Doesn't immediately answer your Q., but the common factor would seem to be the mains supply and the wiring to the two items of electrical equipment. An earthing problem? I also assume that the wiring to your microphone is well screened. Having said all that - yes, the phenomenon you describe is very strange! Al.