Except that it doesn't. The station's 60 dBu signal covers almost none of St. Louis proper, and 95% of listening takes place inside the 60 dBu signal contour.
I have not seen any threads on Donze's KBDZ 931. The FM station out of Perryville is a 50,000 watt flame thrower with a classic rock format. JC Corcoran is the station's new morning man (6-9 am). The signal covers 70% of the St. Louis ADI.
The 95% rule applies to in-home and at-work listening only. But that is about 2/3 of all listening... in-car listening is often good way beyond the 60 dbu, but most people don't have a "favorite" station that they can't listen to anywhere they are.
But that station only covers about 150 thousand people in its 65 dbu contour, most of whom are not even in the St Louis MSA. The station is a Cape Girardeau / Paducah market station.
I'm a big fan of the playlist, but I can't get a trace of anything on 93.1 in the CWE. That's no surprise given when it's coming from... but I was in Oakville earlier in the week, tuned in, and to my surprise, the signal sounded lousy there too. If the signal is nothing to boast about in South County, it's hard to claim it's much of a St. Louis station.
In full credit to Kent above, if the goal is for KBDZ to be a St. Louis station, 93.1 needs to somehow get closer to St. Louis (is that possible with KQQX and KSD?), or find a simulcast buddy who is.