October 18, 1999
Wireless Internet Circa 1991By Jason Levitt
Under MS-DOS, you'd run a homebrewed Network Operating System, called KA9Q, written by Qualcomm engineer Phil Karn, that could handle the high-latency, noisy connections, and overall sluggishness associated with ham radio connections--connections that were never designed for packet data traffic.
KA9Q let these ham radio operators network their systems together using TCP/IP over their wireless links, a fairly astonishing feat in the days when few people cared much about wireless links and the Internet was still mostly a research tool for academia.
n 1991, the state of the art in wireless "devices" was PCs running MS-DOS connected to amateur ham radio equipment.
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