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REPOST: Hellschreiber – The Modern/Historic Analog/Digital Mode 4 - August - 2008

Posted by k9zw in Amateur Radio, K9ZW Just Rambled, K9ZW Learned.
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What modern Amateur Radio soundcard “Digital Mode” is nearly 80 years old?

What Amateur Radio soundcard “Digital Mode” is really analog?

What Amateur Radio soundcard mode was adopted by the WWII Axis Forces?

Dr Rudolph Hell’s “Hellschreiber” is that mode!

First we should make it clear that “Hell” was the good Dr’s surname, and that in Dr Hell’s German language it is a play on words of sort, translating as “Brightly.”

So it is NOT a cussword in this use, nor does it have any real meaning beyond Dr Hell’s name.

Hellschreiber sould be thought as related to the technology of a Fax machine. The message to be sent is “scanned” using a matrix or grid, much like making a halftone from a photograph for printing, and each spot in the grid is declared as either Black or White in an analog transmission.

Here is an example of Seven and Twelve High Grid formats for Feldhellschriber (Field Hell Writer):

7 and 12 wide Hellschreiber Layout

Dr Hell’s orginal prototype from the 1920′s seemed to have more to do with a Ticker Tape machine than anything else:

Hellschreiber Prototype

This original machine used Carbon Paper (kohlepapier) and a “striker” to tap the printout tape (called Registreirstreissen in the drawing):

7 and 12 wide Hellschreiber Layout
7 and 12 wide Hellschreiber Layout

The German Army gear was later refined for commercial use:

7 and 12 wide Hellschreiber Layout

Now we run Hellschreiber over Amateur Radio Bands using soundcard software:

Modern Soundcard Hellschreiber running on MixW

A good list of Hellschreiber References is:

http://xoomer.alice.it/aporcino/Hell/index.htm

http://home.c2i.net/clank/ham/hell/hell.html

http://en.wikipedia.org/wiki/Hellschreiber

http://www.saraclub.net/new_page_60.htm

http://www.qsl.net/zl1bpu/

http://www.xs4all.nl/~nl9222/hellpics.htm

http://www.qsl.net/zl1bpu/FUZZY/History/History.html

http://www.hffax.de/history/html/hellschreiber.html

http://feldhellclub.org/ is the premier Hellschreiber Club – K9ZW is FH #169 (there are over 650 members).

73

Steve
K9ZW (FH 169)

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Comments»

1. K7AGE - 12 - August - 2008

I just found your blog page. Check out my video on Hellschreiber:

Randy
K7AGE

2. Voravut Srithong HS8JYX - 31 - August - 2008

Thank you
i like hf digital mode
http://www.hs8jyx.com

3. Flex-5000A does Hellschreiber « With Varying Frequency - Amateur Radio Ponderings - 2 - December - 2008

[...] REPOST: Hellschreiber – The Modern/Historic Analog/Digital Mode [...]

4. Hellschreiber – that Fuzzy Mode « With Varying Frequency – Amateur Radio Ponderings - 14 - December - 2011

[...] Several years ago I put together a longer piece on exactly what Hellschreiber is: http://k9zw.wordpress.com/2008/08/04/repost-hellschreiber-about-the-mode/ [...]


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