Hellschreiber

From HFUnderground

Revision as of 12:52, 14 September 2007 by WikiSysop (Talk | contribs)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to: navigation, search

HELL (Hellschreiber) is a so called fuzzy mode. It was invented in the 1920s, and saw limited use until World War II. It has become popular today with a subset of the ham radio community. The message is transmitted as raw pixels, with the operator viewing the received image and mentally filtering out interference.

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


Personal tools