Back in those days, the only Birmingham station I could remember picking up with any regularity was the old Kicks 106 (WKXX) and Magic 96 (WMJJ). Once you got on I-65 just past Prattville, all of the 100kw FMs were audible. More rarely, you could hear the old WUOA / WFFX 95.7 when it was based in Tuscaloosa. To me, it was (and still is) almost always easier to pick up stations in Montgomery which were in a pie shell from southeast (Dothan / Panama City) to southwest (Mobile/Pensacola) than from the north.
WMJJ was on the 104.9 translator in Montgomery in the mid 80's with 10 watts at the most. I think that stopped when Sunny 103 came on with a similar AC format.
All the big Birmingham FM's were reliable in Montgomery with a good antenna. Loved listening to the 10 oldies in a row at midnight in stereo.