Here are some pictures of Slow-CW stations recorded with Spectrogram 4.2.6.5 or the new Spectrogram 5.0.9 by R.S. Horne received mainly between 137.600 and 137.800 kHz. The two horizontal lines mark the window between 137.695 and 137.705 kHz.

My first longwave QSO ever, with DJ8WL, Peter. I had about 15 Watts output. This spectrogram was recorded by Peter.

More Samples:

DA0LF (November 1997, recorded with FFT-DSP)
HB9ASB, IK1ODO, G3LDO (January 17, 1999, Transatlantic Tests)
G3XTZ (January 23, 1999 and March 5, 2000 on 73 kHz!)
HB9ASB (February 1, 1999, June 27, 1999)
DJ8WL, DF3LP (Februay 14, 1999)
DJ5AO (April 17 1999)
DL3KS (April 18 1999)
DF3LP (April 17, 1999)
DJ5BV (April 22, 1999)
DF8ZR, DJ5AO (June 13, 1999)
G3XDV, ON4ZK (June 19/20, 1999 and July 17, 1999)
DK8KW (yes, that's me, seen by G3XDV June 13, 1999)
G3YXM, I assume (July 4, 1999), clearly identified (July 17, 1999), ufb signal (July 18, 1999) and on 73 kHz (March 5, 2000)
DK8KW (again, thats me, seen by PA3BSH, July 17, 1999)
DJ2LF and DF8ZR (August 8, 1999)
G4NYK has copied my signal (August 14, 1999)
G0MRF was 'M' here today (January 9, 2000)
G3XTZ, G3YXM and G3LDO (Transatlantic Test January 16, 2000)
M0BMU on 70.832 kHz (March 6, 2000)
G3LDO on 70.750 kHz (+/-, March 25,2000)
DF6NM sending Slow-Hell on 137.730 kHz (also DL7YA can be seen calling cq, June 12, 2000)
VE1ZZ beaconing (December 23, 2000)
G4CNN calling "QRZ" (October 22,2001)

The Loran Situation at my QTH