The Pictures below were cropped from images obtained using Spectrogram

MM0ALM 6wpm Slow Morse at 12.30, 25 December 2000

 
 

QRSS test transmissions by VE1ZZ, Nova Scotia

VE1ZZ on 136.5004 at 01.00, 23 December 2000

The call sign can be clearly seen.

VE1ZZ 136.5kHz at 23.30 on 8 January 2001

 Still readable through heavy QRN
 

Hellschreiber

G4JNT ON 137.79 at 11.55 28 December 2000

Recorded using Spectran - settings: Resolution 0.49Hz, Speed 1.5 graduations.
(biggest problem keeping timing intervals equal - keep hand away from mouse!)