I just bought a new HD Set and I will be connecting my 625 to it as I plan to wait until spring to upgrade to HD service. My current setup has the receiver connected to my old TV via a coaxial cable (my old Sanyo doesn't have any other inputs). Can I just attach the coaxial cable to the antenna port on the new TV, or do I have to use the RCA type cables? I am a real neophyte when it comes to this stuff and any help is appreciated.