 In 1973, KTHO-FM became fully automated and was separately programmed with beautiful music.Later, its call-sign was changed to KZFR ("K-Zephyr"), then briefly another change, but changed again to KZFF when its sought previous KZFR letters had already been re-assigned elsewhere.In the early 1980s, the station slightly shifted its dial position from 103.1 to 102.9 which allowed more coverage from a new transmitter location atop Genoa Peak on the eastern side of Lake Tahoe.