Bloody arrgh! Seems my house is extremely receptive to CBC's very strong broadcast signal and every coaxial cable in my house, nomatter how thick it is, is probably like 20 years old and every one of them is acting like an extended aerial and picking up TV signals from the air and crossing them with my actual cable channels. CBC is the only signal strong enough though to really interfere, but because it's on 9 on antenna, it ends up crossing with my fireplace
There's nothing I can do. I've tried everything already aside from buying some expensive shielded coaxials and replacing every cable in the house. Either that or I wrap my house in tin-foil or maybe just every cable. Would an iron ferrite loop around cables work maybe?