I recall back in 1968-1969 when WFBM-FM (now WFBQ, right?) switched from in house production of music reels to using BPI programming (Don McMasters and Del O) and switched to STEREO broadcasting, called themselves stereo 947, no point or no pause. Dial position was 94.7.
Back in the sixties, KRFM(FM) in Phoenix, ID'd KRFM, 95.5 on the FM dial, Phoenix. KRFM ninety-five five.