Thursday, 21 March 2013

Decoded some Hellschreiber

While tuning across the HF bands tonight I stumbled upon this strange signal on 40m, firing up Multipsk I took a hunch that it was some form of teletype transmission and discovered it was in fact Hellschreiber.

You can read all about it on Wikipedia

The original mechanical Hellschreiber facilimile machine was first developed in the late 1920s, and saw use starting in the 1930s, chiefly being used for land-line press services. During WW2 it was sometimes used by the German military in conjunction with the Enigma encryption system. In the post-war era, it became increasingly common among newswire services, and was used in this role well into the 1980s. Today Hellschreiber is used as a communication mode by amateur radio operators using computers and sound cards; the resulting mode is referred to as Hellschreiber, Feld-Hell, or simply Hell.

Sorry about the poor quality of the video, hopefully you can make out some of the text in this QSO.

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