My new DirecTV receiver does not have the Type F coaxial output. I have it connected to a TV via HDMI but I have a second TV in front of the treadmill that I had connected to my old receiver via coax. With the new receiver I cannot utilize the pre-existing wiring in the wall to get to the 2nd TV. And I can't seem to find any adapters that would go between say a composite output and a coax Type F cable. Does anything like that exist?