Ham radio uses the same phenomenom to make contacts all over the world. Where are you Charin ????
I used to listen to the Blues, NBA Hawks, Chicago and all that on AM radio in high school at night. That was pretty much all we had. FM was in it's infancy and you could tune up and down the band and only find a couple of stations at that time. My favorite was WLAC out of Nashville late at night. Ernies record mart with blues by the likes of Howling Wolf and Jimmy Reed. After that show was gospel music [the good kind by black performers].
Many people still DX the AM band for fun and write the stations requesting QSL
cards