I recall in the Summer of 1981 KIIS-FM playing Neil Young-Heart Of Gold. The song was a decade old at the time. Mellow, older songs like that gave KIIS an AC lean. They were like an adult Top 40.
I was listening to a KIIS aircheck from 1982 and something that impressed me was they were calling themselves 102.7 KIIS FM. They were ahead of their time giving a digital frequency back then. Most FM stations still rounded off to the closest whole number.
Interestingly, I don't think 102.7 ever did 'round off.' KKDJ before that was also IDed as "102.7."
Another example was KMET - even in the late 60s, they were "94.7," never "95." Their sister staton, KSAN in San Francisco did round off 94.9 to "The Jive 95." KPPC was always "106.7" - never 107.
Another example is KLOS, which was always either 95.5 or "95 1/2." A lot of FM stations never rounded in those days.