🚀 go-pugleaf

I had the same problem but I found it was on my end - the cable is
shielded very well but my TV's enclosure is far from a faraday cage! 
( it's plastic in fact! ) and the 300 ohm line that runs from the 
back connection on the TV to the pre-amp/tuner is a perfect antenna 
for any local broadcasts! 

In my case there was nothing wrong with the cable company but merely the
poorly shielded chasis on my own TV.

I have not yet solved the problem - the only solution I can see is to
watch your TV in a "faraday cage"  :^)  :^)

Derek.