I believe KCLA is a country music station on 93.9 FM in Los Angeles.

KZLA

KZLA is one, or was when I lived there. So was KLAC, which might be of some
confusion. I cannot recall what the freq's were (been too many years since I
left there) but those two calls stand out from being plastered on busses and
billboards in my childhood.
Linus