Hellschreiber

From HFUnderground

Revision as of 04:13, 4 September 2010 by Strange Attractor (Talk | contribs)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to: navigation, search
Feldhell apparatus

Hellschreiber or Hell is a so called fuzzy mode. It was invented by Dr. Rudolf Hell in the 1920s. In this mode, the message is transmitted as raw pixels, with the operator viewing the received image and mentally filtering out interference.

Hellschreiber saw limited use until World War II. During World War II the standard mode of Hellschreiber was used by the German Army and was nicknamed Feldhell.

Recently it has become popular with a subset of the amateur radio community.

Retrieved from "https://hfunderground.com/wiki/index.php/Hellschreiber"



This site is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. Some links may be affiliate links. We may get paid if you buy something or take an action after clicking one of these.