Packet radio

ALOHAnet, also known as the ALOHA System, or simply ALOHA, was a pioneering computer networking system developed at the University of Hawaiʻi. ALOHAnet became operational in June 1971, providing the first public demonstration of a wireless packet data network.

amateur radio telemetry forwarding protocol

form of amateur radio data communications using the AX25 protocol

AX.25 (Amateur X.25) is a data link layer protocol originally derived from layer 2 of the X.25 protocol suite and designed for use by amateur radio operators. It is used extensively on amateur packet radio networks.

right|thumb|Antennas for High-speed Amateur-radio Multimedia Network (HamNET) in Europe, part of the wireless mesh network