As far as I know, this is the only map floating around. It's probably a decade+ old, and only shows the A-deck assignments of that time.
https://forums.radioreference.com/attachments/fire-dist-map-old-jpg.45884/
Since then, channel A-11 has been added for Scottsdale, channel A-12 for Chandler and Sun Lakes, and A-13 for Tonopah and Harquahala Valley. A-3 was also worked in there somewhere.
As for the K-decks, K-6 covers the Northwest Valley, K-7 covers the Northeast Valley, K-8 covers the Southeast Valley, and K-9 covers the Southwest Valley. I-17 and Northern Ave are the approximate boundaries between East and West, and North and South. (The descriptions given in the RRDB for the K-deck geographical assignments, I believe, are wrong. I say this from my own listening.)
If anyone has an updated official map for both the A-deck and K-deck assignments, it would be greatly appreciated if it was linked to here.
John
Peoria