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I'm a bit late to the party but here goes:

In the fall of 2010 we had a new XV95 installed. When I turned the HF radios on and the furnace kicked on for the first time...S-9+ noise that the rigs' blankers wouldn't even touch.

I had to engineer a solution independently of Trane's, and the one thing I don't have installed (yet) is an EMI filter on the mains. But I do have a nice 30A unit sitting in front of me awaiting a new home. Likewise, I have to redo the PWM controller harness to incorporate better inter-board grounding.

There must be $200 worth of snap-on ferrites and toroids in that furnace at this point but I got the noise down to around S-2. The other pieces of the puzzle are in the PDF linked in this thread. Thanks for sharing it!

[QUOTE="N8YX, post: 418649, member: 1363"] I'm a bit late to the party but here goes: In the fall of 2010 we had a new XV95 installed. When I turned the HF radios on and the furnace kicked on for the first time...S-9+ noise that the rigs' blankers wouldn't even touch. I had to engineer a solution independently of Trane's, and the one thing I don't have installed (yet) is an EMI filter on the mains. But I do have a nice 30A unit sitting in front of me awaiting a new home. Likewise, I have to redo the PWM controller harness to incorporate better inter-board grounding. There must be $200 worth of snap-on ferrites and toroids in that furnace at this point but I got the noise down to around S-2. The other pieces of the puzzle are in the PDF linked in this thread. Thanks for sharing it! [/QUOTE]

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