Yeah, KMFC is available in parts of Jeff City on a good car radio, but the terrain isn't flat enough to make it consistent throughout the area. KSDL does better in some parts of town. When Clair owned KMFC, it was on a translator at 100.9 on the water tower on the south side of town just past Ellis on the west side of 54. It covered the Jeffro pretty well, but Zimmer bought it for KWOS when K-Love bought KMFC. Zimmer has since moved another translator into town for KWOS, and, last I'd heard, 101.1 (moved from 100.9) was just relaying KAT Country. I'd been told Zimmer was going to put an HD transmitter on 106.9 and had intended to use those translators to broadcast subchannels, but I don't think 106.9 has ever lit up HD.
In 1978, I lived in an apartment just west of downtown Columbia. There, I could pick up what was then KCBW from Sedalia pretty well. It had a nice album-rock format at the time. Before that, it was KSIS-FM, one of the earliest FM stations in mid-Missouri. The Centralia allocation was created in 1980. It may have hemmed in the Sedalia station such that it couldn't upgrade once 80-90 came along. Trenton would also have been a limiting factor; KTTN-FM moved to 92.3 for its C3 upgrade.
By 1981, Jerry Clair had gotten a conditional use permit from the county to erect a tower for what became KMFC, but it took him several years to actually get it on the air. He was a pastor who had also started a Christian bookstore in Columbia. I don't remember a whole lot about Clair's application and the time it took him to build the station; the whole situation with the Centralia allocation didn't get a lot of notice in Columbia. KMFC went on the air early in 1986. Later it had translators in Columbia, at 103.1, and in Jefferson City. The Columbia translator (K276DI), which came on the air in 1987, was at the Candlelight Lodge, owned by an entity called Light Waves, Inc., probably to maintain the required independence from the station being retransmitted, as KMFC operated commercially and wasn't eligible for direct ownership of translators outside its primary coverage area. I remember seeing the installation whenever visiting my aunt, who was at the Lodge for about a year before she passed away.
The Jeff City translator was at 100.9, as you mentioned, K265CT. I can't tell you much about it.
Public news/talk KBIA is the only HD station in the market as far as I can tell, with the HD-2 being used for the classical service that's now also on KMUC. The HD-3 is "Xponential Radio", in mono, and, whenever I've heard it, has seemed a bit neglected; for example, audio levels on the HD-3 seemed low.