Literally my first exposure to FM radio, other than hearing the elevator music stations played in offices, etc was stumbling across what is now KABZ 103.7 Little Rock AR on a multiband radio my Dad owned back in 1974. The station was a "adult rock" station, called K-Kick 104 (KKYK) and had an automated sounding format. KKYK dumped the automation in 1976 and had live jocks after that time, but another station I recall in my childhood-- KWTO-FM 98.7 "Rock 99" Springfield MO-- could be received at my Grandmother's place in Berryville AR. I recall "Rock 99" having that format until at least 1982, since KWTO-FM was still automated with the two songs, and backannoucing.
I discovered earlier this year after some radio-related web searchers that format was called "TM Stereo Rock" and came out an outfit in Dallas, called TM Productions. KKYK from at least 1974 (perhaps earlier) to 1976 used the "TM Stereo Rock" format, and KWTO-FM did the same until sometime in 1982. Another local station, KOTN-FM 92.3 Pine Bluff AR (later KFXE, and now KIPR) had flipped from elevator music to automated rock in 1978 (and later flipped to live and local country in 1983) but it wasn't the same announcer (Jon Borders) doing the backannouncing so I believe in retrospect that TM wasn't programming KOTN-FM/KFXE. KKYK and KWTO-FM were the only two stations I recall hearing TM Stereo Rock in the wild back in the day.