Brian, the station went on sometime Tuesday morning on 107.3 . According to Jim Doyle (afternoon personality on RAFSTL), the station is in a testing phase for the week before the official launch on the 8'th.
I live on the Illinois side (Maryville/Collinsville/Troy) of the metro, but receive the 107.3 signal well, considering I'm outside the coverage area. On the road, the station tends to fade but that is to be expected here. Since Tuesday evening, RAFSTL is now carried on KIHT HD-2.
What used to be carried on that HD-2, KFTK (Emmis' news talk station on 97.1) is now located on KSHE's HD-3 signal. This move displaces "My '80's Channel," which used to be the occupant at KSHE HD-3.