According to the pull down band menu on WSPRNET propagation map there is WSPR activity on VLF/LF: http://wsprnet.org/drupal/wsprnet/map Vlf is below 30kHz, perhaps they are on 9kHz? -- 73 Warren K2OR
I guess they have their own interpretation of VLF, based on the calls i see it's 137kHz / 504kHz 73, Rik http://wsprnet.org/drupal/wsprnet/map Vlf is below 30kHz, perhaps they are on 9kHz? -- 73 Warr
After digging further into the WSPRNET map, I only saw 500kHz and one 137kHz station plotted. Apparently the organizers of WSPRNET do not know the difference between VLF, LF, and MF ! - 73 Warren K2O