[Lowfer] RTTY Type signal just below 530 KHz.

[KD7JYK DM09]

While driving home this evening, around 1915 - 1925 hours west-coast 
time, I had the truck radio sitting on 530 KHz, and heard what sounded 
like teletype.  It's a digital tuner, so I couldn't tune around, but 
definitely some sort of data signal.  Location was Nevada, about 20 
miles East of Carson City.  I got a 1 minute long recording, will try to 
clean it up later, but what could I have been hearing around 530?  I've 
heard NAVTEX at 518 in the early 90's, could it have been something 
similar closer to AMBC?

Kurt