Growing up near Seattle of course I have to vote for the earlier mentioned KCMU (UW college station that switched to a killer new wave/punk format when I started listening in '81), KYYX (Stephen Rabow was the best!) and KJET on the AM band.
I always remember hearing about KROQ, but only after I visited L.A. in '81, so I never got to hear it! Does Rodney still DJ?
