Graham, Rick, Bob, I guess that when the CW id of a WSPR station is audible there should be solid copy in WSPR. But, as mentioned by Bob, WSPR 2.0 was used to transmit the unusual WD2XSH/37 callsign.
Rick - there are a number of NDB's on 505/507 which on the their DSB/LSB tone freq into the freqs of interest - Ill have a look at my Chinese NDB log but I cant recall WA from memory, but there again
Rick, Looks like wd2x .. was the station .. you can check what stations are operating at : http://wsprnet.org/drupal/wsprnet/spots 2009-12-24 03:38 WD2XSH/37 0.503912 -26 0 FN42fo 2 ON7YD JO20ix 5615