KAET channel 8 (aet) in Phoenix
WLVI 56 Boston
I read on Wikipedia that Q102 in Philadelphia got their call letters WIOQ because an uppercase cursive Q looks like the number 2, so "IOQ" written in cursive would look like 102.
Not to toss cold water on your speculation but I think the calls for KAET in Phoenix (actually Arizona State University in Tempe) was not for the Channel 8 relationship but because it is our PBS affiliate it meant "Arizona Educational Television".