Again my apologies for the very late post but just unpacked my notes from my Halloween trip to City of Rocks State Park in southeast NM where I surprisingly heard several pirates well, including this one briefly that I can't find posted elsewhere. I used a Tecsun PL-660 with a 23 ft long wire at 6 ft and the brief signal was a 4-3-4. I was trying to tend a campfire at the time, but am almost positive it was in AM.
2341 Tubular Bells extended version
2345 another instrumental
2347 male announcer mentioned something about a carrier and continuing a stream and then off
That's all I heard FWIW.