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©2007-2009
F. Dörenberg. All rights reserved worldwide. No part of this publication may
be used without permission from the author.
It has taken considerable effort to create these pages. If you "borrow"
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The Hell Feldfernschreiber is "the" classical Hellschreiber, also known as Siemens-Halske model T typ 58. But there have been Hellschreibers before and after the trusty old Feld-Hell. We could broadly categorize the Hellschreibers used by radio amateurs as follows:
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Classical:
"Feld-Hell", Hell
72b/c "GL", "Hell 80" – mechanical machines.
They
roughly
cover the periods of the mid-1930s-40s, 1950s-70s,
and 1965-70s,
respectively.
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Modern "software" variants: FSK, PSK, FM, Duplo, C/MT, S/MT, Slowfeld. These modes primarily came about during the 1990s, when digital signal processing became mainstream and could be implemented on PCs. These modes where developed or invented by radio amateurs. |
There are two more categories that I'd like to cover here:
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Other Hellschreibers:
there is a number of Hellschreibers from
Hell/Siemens-Halske, before and after the Hell Feldfernschreiber, other
than the ones listed above that are used by radio amateurs. This
includes printer-only models, and the ZETFAX machines with
optical-scanning. The are described on
the Other Siemens Hellschreibers page. |
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Hellschreibers from other manufacturers: these are printers and senders/printers that use the Hellschreiber principles, but are not designed and built by Hell/Siemens-Halske. Examples are the Teletype Model 17, several EMA Hell-Printers, and the US-military tape fax. |
[Hell T typ 72b/c "GL" and 73 "AGL"] [Hell T typ 80 "Hell-80"] [modern "software" variants]
[Other Siemens Hellschreibers] [Other manufacturers]
| Siemens Equipment Designator | Equipment name |
| T empf 12 | Presse-Hell |
| T empf 14 | Presse-Hell |
| T typ 58 | Hell Feldfernschreiber |
| T typ 72 | Siemens-Hell-Schreiber "GL" |
| T typ 73 | Siemens-Hell-Schreiber "AGL" |
| T empf 39 | Siemens-Hell-Schreiber "L" |
| T empf 40 | Siemens-Hell-Schreiber "F" |
| T empf 44 | - |
| T typ 80 | Hell 80 |
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