Thanks guys, couldn't find the RCA locally yesterday, but should I disconnect the preamp on the 4228 and replace with with either the RCA or 7777 on the downlead? I have a power source about 35' downline from the antenna, is that OK to amp it halfway from the TV, or should I just run the amp right before the tuners inside the house? In rabbit's diagram, it looks like the preamp precedes even the coax after antenna, so does that mean I should mount the preamp on the antenna mast, and just run the power inline downstream, by the tuner? If I take out the preamp on the 4228, will I need something else other than just the RCA? I guess the linear logic is escaping me. I'm contemplating getting the hi VHF antenna and just mounting it above the 4228, looks like I could use the dual inputs(VHF and 4228) to the RCA, and combine to Coax, to the power unit then to the tuner. Does this work?