> Iv'e gotten WBBM from Chicago in the West Valley during the
> 80s..the colder the night, the better the distant AM
> protection.
Three Chicago stations (WGN 720, WBBM 780, WLS 890) used to be audible in Phoenix in the early '70s, at least during the winter. Of course, this was before KDWN Las Vegas, KKOH Reno, and KDXU St. George came on the air. Then-WMAQ was blocked by KBOI from Boise, which put a good signal into Phoenix until just a few years ago.
Since then, I've heard WBBM only on rare occasion. WGN and WLS don't come in at all anymore.
I've never heard any FM DX and only occasional E-Skip on TV since I moved to Ahwahtukee. I'm too close to South Mountain to anything on those bands.