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Alan Taylor wrote:
Hi again Mark, I think Jake is on the right track, whatever the source of noise inside the unit its the mechanism that radiates the noise that needs to be attended to. In my case it was the external cables, choking them off with ferrite sorted out my problem. To suppress the noise at source within the unit seems a bit hard for me. I also suspect there may be more than one noise source in the box. 73 Alan VK6BN "Mark" wrote Several months ago I had a high efficiency Trane XV90 natural gas furnace and heat pump installed. Since the weather has recently been cold enough for the gas furnace to provide heat, I have been experiencing severe radio interference. The interference wipes out AM Hi, Then, shielding, choking, bypassing with caps come to mind. It's all by trial and error. O'scope may come in handy. |
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