You'll likely not have those issues these days.
In 2009 the new digital on-air channels (8VSB) became the rule.
Channel 2,3,4 (I don't recall right now where it begins OTOH) do not exist any more on the TV bands as the spectrum was sold off to other commercial interests.
In the Chicago area channel 2 is really on channel 12 but digitally signs as channel 2.1 and 2.2 (8VSB).
The only place that real channel 2 exists is in small TV head-ends (closed cable systems).
I run one of those at the hospital I work for and I am taking channel 12.1 and injecting it on to our system at channel 2 but it signs as 2.1 and 2.2 1080p. (would not matter what channel I placed it at would still sign as 2.1 and 2.2)
So 6m issues are more or less a thing of the past since the low end of the TV spectrum was abandoned for that use.