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Each Hellschreiber mode and speed has a specific sound. For each original and modern Hellschreiber mode, a sound-clip is provided below. They can be printed with original Hellschreiber machines (Feld-Hell, Hell "GL", Hell-80, Thomson) and with Hellschreiber software.

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If you are having any problems with the player above, please try the original sounds page. Note: Apple iOS (2017) does not support click-to-download.

For the "Hell-80: QSO in start-stop mode (Part 1)" sound clip, you can click here for a scan of the associated paper tape print-out.

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©2004-2017 F. Dörenberg, unless stated otherwise. All rights reserved worldwide. No part of this publication may be used without permission from the author.