Dh says that in the early days of radio, big cities like New York had radio stations with only 3 call letters instead of 4 like they have today. I tried to google WSR for a "regular" (not weather related) station and found an online station with those letters. Anyone else know anything about radio stations?
The USO doesn't have radio stations, but the Armed Services Network does.
It was definetly big band station as the song that finished up was Duke Ellington before they went into Glenn Miller.