Then it was a big thing when UHF broadcasts began - so we had channels 2, 5, 7, 9, 11, and now . . . 32! With channels 26 and 44 soon to follow. I remember a tech came out to retrofit our console with a UHF tuner.
Funny - that jarred my memory on the channels we had. 2,4,5,7,9,11,13. 2,4 and 7 were CBS, NBC, and ABC. The others were "local" channels out of LA with news, reruns of shows like Gilligans Island, I love Lucy, etc., and the offbeat stuff like Elvira Mistress of the Dark.
The UHF channels I don't recall watching until the 70s, and I think it was 28(PBS), a local channel, 64, that was like "local cable" or whatever, and then another channel that showed up with those weirdo religious shows where the guy, sometimes accompanied by an over-made up wife, would "preach' and get really mad if he didn't get enough donation calls while he was on. Oh, and then some other channel that only played at night, but had, I think unintentionally, uncensored Benny Hill reruns, which were like the internet porn of the time.