Regularly, some channels will have the horizontal bars (like this, but worse http://4.bp.blogspot.com/_I3zxUYgnbBc/SbaBUETXopI/AAAAAAAAAIA/z-EJLThjkcs/s1600/TVglitch03.jpg) and choppy sound that indicate a bad signal.
Almost CONSTANTLY this happens with CTV (SD, but I have a HD PVR) and it's starting to drive me crazy coming home to watch recorded shows and they're all unwatchable because they're like this. It seems to be almost exclusively CTV, it's unusual for me to have this problem with other channels anywhere near as frequently, but it does occasionally happen. Happens sometimes while just watching the channel, but between 60-70% of my recordings from CTV SD come in looking like that. Connection is fine as all the other channels come in normally 95% of the time.
Can anyone help me with a solution, aside from switching my recordings to the HD channel?