I have to be in the most difficult area to get good reception. I just purchased a 4228 and one of those GE inline amplifiers. I receive all of the US channels including channels from Watertown NY just south of Kingston.(originally thought it was Toronto/Buffalo)
What I did is use tie wraps to connect the rear screens tightly together, this was a suggestion I found somewhere among the forums, and 22.1 comes in solid, as well as 3.1 and all the others. From what I've read, tying the two sections close helps with VHF reception.