I checked another source just to be sure, but you're right! Phoenix has an empty lower-VHF dial! Prescott (Ch 6), Yuma (Ch. 2) and Tucson (Ch 4) have the lower

I checked another source just to be sure, but you're right! Phoenix has an empty lower-VHF dial! Prescott (Ch 6), Yuma (Ch. 2) and Tucson (Ch 4) have the lower-VHF stations in that region.