Hi, I bought a TrippLite surge protector for my main HT surge protector, where I run my TV, cable box, coax, etc. through. However, this particular surge protector has the undesirable effect of filtering out HD channels (I have an HD box from my cable company), and certain digital Pay Per View channels. All other channels come through fine, so I'm guessing it has to do with the frequency at which these specific channels are being sent through. Of course when I connect the coax directly to the TV and bypass the surge protector, all the channels work fine. My question is whether this is something that is common, and if so what kind of surge protector should I buy to avoid this problem? Are there newer protectors out there, that are more sensitive to the coax input, and won't filter out these channels?