The logic behind the first converter box subsidy was that the Government had taken an action that deprived many citizens of televison. That is not really the case here as ATSC 1.0 has not gone away yet like analog television did.
UHF 36 is used by a full powered digital station (WFSB) in CT. H UHF 36 is used by wFSB a full powered digital station in Hartford, CT. Hard to believe an analog station would use that------but who knows.
I have given up on figuring this one out. I have seen this issue with multiple Hoppers and Joeys and the remedies cited here have been tried umpteen times with no effect. I gather that I am the only one in the DC area that sees this.