This URL gives more info about both KTKT and KAIR: https://en.wikipedia.org/wiki/KFFN
I thought KTKT was always at 990 but apparently not the case.
From the Wiki article: "In 1965, Tucson's first audience participation radio talk show, "A Joyful Noise", was heard on KAIR. Moderated by station manager Thomas J. Wallace Jr., it was also broadcast on KZAZ-TV channel 11 on Sunday afternoons."
The 1965 date is incorrect as far as KZAZ-TV is concerned, as channel 11 didn't come on the air until 1Q of 1967.