Metadata
Author: Common crawl
Data
German[de]
Modulationsverfahren wurden seit langem in der Rundfunktechnik und später in der Trägerfrequenz technik der ehemaligen Deutschen Bundespost eingesetzt (wireless modulation).
English[en]
Modems in the United States were first introduced as a part of the SAGE air-defense system in the 1950s, connecting terminals located at various airbases, radar sites and command-and-control centers to the SAGE director centers scattered around the US and Canada.