Still thinking about this --

Idaho Radio News archives has this interesting information on KFXD

From the same source is this tidbit.

The KFXD control room (circa 1987) taken during the Don & Mike Show.

From my Archives -- Long before I had anything to do with KFXD.  Studios in Nampa.

This is probably early 40's  -- The original transmitter "house" at 455 W Amity in Merdian, Idaho