I agree with Murphthelab that if you have Cable TV coming into the mix, it is likely the problem.
I used a simple solution from Radioshack. I am at work on lunchbreak so do not recall the exact connectors required, but they were about 5 bucks total cost and it works perfectly. Simply a connector you put on the cable line where it comes into the house, which goes between that cable and another cable run to your TV. It somehow fixes the problem and does not require you to you use cheater plugs on any equipment.
I am sure someome here knows the exact names of the coax adapter/connectors to use.
I used a simple solution from Radioshack. I am at work on lunchbreak so do not recall the exact connectors required, but they were about 5 bucks total cost and it works perfectly. Simply a connector you put on the cable line where it comes into the house, which goes between that cable and another cable run to your TV. It somehow fixes the problem and does not require you to you use cheater plugs on any equipment.
I am sure someome here knows the exact names of the coax adapter/connectors to use.