BigFella - I guess I'm in the same situation as you. I get one set of digitals OTA very well from 35 miles with an old combination antenna and B-T high gain preamp and rotator, but that's about it. There are several other co-located digitals, all UHF, at about 25 miles at a different heading from the one group I get. I once got these long enough that both my TV and my 811 scanned them in. They lasted about a week then "disappeared" again. My 622 has never received them, at least never well enough to lock. I'm sure they're still there, I'm just in a bad location on the wrong side of the ridge to get them reliably.
I bought a 4228 thinking that alone would make a difference, but it really didn't. I can get that same group of channels I was already getting on the old system with the unamplified 4228, but that's about it. (It also receives my analog Ch10 but not very well.) I just ordered the 7777 and new cable hoping those will be the final additions to a working system. I realize I may still have to play with antenna location and height.
My questions for you - Do you have the 7777 preamp? If so, did you try the 4228 before you added the preamp, and if so how much difference did the preamp make?
bazbol44 - Sorry to shanghai your thread, but I think this is all relevant. In any case I hope to have some more favorable news to report from a marginal situation within a week or so...!
TIA all, and BRgds...