Just one more note, to anyone looking to track down RFI in the future; shutting down power to the entire home is a great and important first step. When the noise remains then sometimes it can help to try higher frequencies (e.g. harmonics), as they often drop in power with distance much faster than say on the AM-band / long wavelength bands. You can then go out with a portable radio, increasing frequency as you get closer to the source.

Hey Tim, in addition to the good advice already given by your new friends here, maybe setup a schedule?

You can respond here or see my profile page for my email, maybe others would like to join?

I bet given a bit of experience, and you'll be impossible to get off the air! 

73's and don't sweat it, it'll be second nature soon enough.
Bruce, KA1KXL

100% agree with you Tanakasan; forget the modern rubbish.