WXQR was a hell of a station in the late 70s, when it was about the only signal I listened to as a high school student.
It was straight-up album-oriented rock when that was a thing. They were tracking complete albums straight thru at midnight, before the record companies put the kibosh on that. They went several cuts deep on most albums. Pink Floyd, Who, Led Zep, Beatles, Rolling Stones, Kinks, Yes, Rush, Heart, Alan Parsons, Moody Blues, Bob Seger, whatever...it was all there.
They also had some great syndicated shows..."King Biscuit Flour Hour", National Lampoon's "True Facts Radio Show", a nightly rock report show featuring Scott Muni of WNEW fame, among others.
I'm surprised they kept the same format (more or less) as long as they did. I suppose it was aimed mostly at the Marine population, but civilian 17-year-old me liked it a lot.