I have an H24 and 2 H23 HD receivers. Does directv still make a multiswitch compatable with these receivers that you can run a atenna feed into the switch to get the extra local channels? I remember on the older receivers they did you would hook the atenna up to the multiswitch and put a diplexer at each tv so you would have one feed for atenna and one for sat. If they make a multiswitch for this what's the model #. Thanks