Hey, Andy ...
My recall is it was initially one of the mainstream stations in town, then became kind of a second-tier station, settling on classical music (I think that was mid/late 50's); at that point located in the Arcade on 2nd & University. Early 1980's, Pat paired it with KYYX, and he took it to old gold '77 KXA. Through all this their xmitter was atop 2nd & Union or Pike .. the former Rhodes store (later Penny's) as one of those dipole wire antennas. Pat moved offices out to Madison Park, and about that time cashed in the bankruptcy chip on both stations. 96.5 went to Shamrock and became KXRX, while the AM was paired with various FM's, usually simulcasting the FM. Bonneville inherited 1090 (KING) as part of a duopoly when KING became KINF (news) ... while Heritage (later Infinity) wound up with 770 and paired it with KRPM, later KBKS. Those swapped at some point, and Bonneville wound up with 770, Infinity with 1090 (today is KPTK) ... Bonneville properties became Entercom ... then back to Bonneville. Somewhere in there xmitter moved to a "real" stick, the juice upped to 50kw (sound familiar!?) ... and that's about where it's parked today.