AX.25 is a data link layer protocol derived from the X.25 protocol suite and designed for use by amateur radio operators. It is used extensively on amateur packet radio networks. ...more on Wikipedia about "AX.25"
KA9Q, also called KA9Q NOS or simply NOS, was a popular early implementation of TCP/IP and associated protocols for amateur packet radio systems and smaller personal computers connected via serial lines. It was named after the amateur radio callsign of Phil Karn, who first wrote the software for a CP/M system and then ported it to DOS on the IBM PC. ...more on Wikipedia about "KA9Q"
Packet radio is a form of digital data transmission used in ...more on Wikipedia about "Packet radio"
PACTOR a radio modulation mode for sending digital signals over a High Frequency radio link (i.e shortwave frequencies of 3MHz (3,000 kHz) and 30 MHz (30,000 kHz)). PACTOR is a proprietary modulation scheme developed and licensed by SCS ...more on Wikipedia about "PACTOR"
Phil Karn is a native of Baltimore, Maryland. He earned a BSEE degree from Cornell University in 1978 and a MSEE from Carnegie Mellon University in 1979. From 1979 until 1984, Phil Karn worked at Bell Laboratories in Naperville, Illinois, and Murray Hill, New Jersey. From 1984 until 1991, he was with Bell Communications Research in Morristown, New Jersey. Since 1991 he has been with Qualcomm in San Diego, where he specializes in wireless data networking protocols, security and cryptography. ...more on Wikipedia about "Phil Karn"
Q15X25 is a communications protocol for sending data over a radio link. It was designed by amateur radio operator Pawel Jalocha, SP9VRC, to be an open communications standard. Like all amateur radio communications modes, this protocol uses open transmissions which can be received and decoded by anyone with similar equipment. Q15X25 is a form of packet radio. Anyone can design or adapt the open-source software to develop their own Q15X25 system. ...more on Wikipedia about "Q15X25"
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