Wow! WELP brings back a lot of memories. A good friend of mine was the engineer there during the late 70's. 103.9 was originally located on the WELP 1360 AM stick on the hill above the Arial Mill community near Easley. The AM & FM were simulcast for many years. At the time, the AM was a 1 kw daytimer, and the FM was 2.3 kw ERP. Power on the FM was later increased to 2.5 kw. Believe it or not, in the early days the FM actually signed off at 10:00 PM every night. Later on, the FM carried local high school football games on Friday nights and after the game would wrap up with all the local football scores on a show called Buck's Scoreboard.
Around 1980, then owner Cleatus Brazzell moved the 103.9 out to its current site on Kay Drive not far from the Greenville-Pickens Speedway. This was done to get a better signal into the Greenville area. I believe the ERP was increased to 3 kw at the time.
A few years later, Mr. Brazzell sold the stations. I don't know much about them from that point on.
By the way, although the station has changed owners over the years, WELP AM is still on the air to this day at its original location, still playing gospel music and carrying recorded local church sermons.