Originally Posted by us.littlefairy
You may want to think about amplification by adding an amplifier to your setup. You can probably find one at your local Radio Shack or Fry's Electronics (make sure you choose a store with a good return policy in case it doesn't work). You'll want to check and make sure that the amplifer has surge and lightning protection features with it.
To avoid amplification of noise or interference, you'll want to locate the amplifer as close to the antenna as possible. I know that's not always possible or practical, but it can make the difference of receiving a clear picture or pixelation on some channels.
It sounds like both TVs utilize the same antenna?
Another option may be to purchase a smaller powered (amplified) antenna from a store (with a good return policy!). I've seen some people have success by switching from an outdoor antenna to an indoor powered antenna.
I see your second post where you've described doing a channel scan after hooking up the antenna, so it looks like you've got everything (TV and converter box) connected correctly.