»Radio, live transmission

Yesterday, at the Computer History Museum:

ABSTRACT OF TALK
A major internet milestone occured on November 22, 1977. On this date the first known three-network transmission took place among SRI International, Menlo Park and the University of Southern California via London, England. The networks involved were the ARPANET, the Bay Area packet radio network, and the Atlantic packet satellite network.

This inter-network transmission among three dissimlar networks is generally regarded as the first true Internet connection. It was also a major milestone in packet radio, the technology behind WiFi and other kinds of wireless internet access.