When I download a large file to my laptop, via Wi-Fi channel 11 from my Buffalo router, I get noise on analog TV channel 6. This doesn't happen when I download to my desktop computer, which is connected to the router via ethernet. So it appears to be the Wi-Fi channel 11 transmissions from the router that produce the noise. But only on TV channel 6.
Well, I just thought Jeff or some other guru might know.