Something to try in the fall and winter: See if you can hear Cuban music rising up behind KFI. I've heard Radio Rebelde several times behind KFI on 640 kHz from up here near Seattle.
I'm about ~1,000 miles from the KFI transmitter in La Mirada, California. I remember driving by the former antenna tower as a young SoCal kid in the 1970s and early '80s. That tower was hit by an airplane in a fatal crash in 2004; the first replacement collapsed again during construction in 2008.