Thus, it was noted at the time that "As far as the FCC is concerned, this was not a frequency change at all. KIDO on 580 is the same station that used to be KFXD on 580 - the only thing that changed were the call letters. Likewise for KFXD on 630; it is the same station that was KIDO-630."
On August 14, 2002, stations KIDO and KFXD exchanged call signs, with AM 580 becoming KIDO, and AM 630 assigned the KFXD call letters by the Federal Communications Commission (FCC). For the general listening public, this resulted in the two familiar call signs appearing on new dial positions, with 580 inheriting the legacy of the oldest surviving station in Idaho. The KIDO intellectual unit signed on in 1922 as KFAU, becoming KIDO in 1928.