spunker88 said:The cable companies should have their cables better insulated against that, otherwise signal loss would be high and cables would act as an antenna. Older less insulated first...
To some degree it's beyond the cable operators' control. You allude to one source of leakage: inadequately shielded TV receivers. Another are poorly-shielded cables installed by *subscribers* to hook up a VCR/add a TV in another room/replace a cable operator-supplied cable that got chewed by the dog/etc... I've not worked in that industry but I've heard of some degree of piracy -- people who don't want to pay for their cable running their own lines from the splitters -- and not doing a particularly good job of it.
The operators do need to keep their lines shielded, but I don't know that proper shielding on their part is adequate to make the use of "impaired channels" for required (or popular) programming a good idea.