[tkrandall]

Q2 -- each receiver mapped slightly differently -- one or another picked up a minor, or fringe channel that I never even heard of, even though all three got all the real major locals. Any logical explanation?

Thanks,

Stan

By "mapped differently" do you mean the different tuners received a different list of OTA channels (they don't scan for channels, they get a list downloaded from DirecTV) , or do you mean the different tuners ability to actually tune the same set of channels differs?

EDIT: I might be wrong above about OTA scanning for the H20s. I think that model actually may be able to scan for OTA channels. Can anyone confirm?