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."
At the time, it was noted that "According to FCC guidelines, this wasn't a frequency modification at all. KIDO on 580 is still the same station as KFXD on 580 - only the call letters have changed. Likewise for KFXD on 630; it remains the same station as KIDO-630."