You are probably pulling in the FOX station from a different translator sight than the one you are pointed at. If your TV has a signal meter you may...
It will be compatible with all US cable providers that support DOCSIS 3.0. Whether or not they approve it for use is a different story. But there is...
They may not be encrypted because Comcast would need a waiver from the FCC in most areas. In some areas they are allowed to encrypt but most are not....