Linkabit was a technology company founded in 1968 by Irwin M. Jacobs, Andrew Viterbi and Leonard Kleinrock. Linkabit and alumni have created a large number of technology companies, most notably, Qualcomm. Linkabit is currently a division of L-3 Communications.
Linkabit was sold for $25 million to M/A-COM in 1979. The Linkabit operation continued under M/A-COM for the first part of the 1980s. VideoCipher, an analog scrambling system for television, was developed by the Linkabit works at M/A-COM in 1983. The first IETF meeting in January, 1986, was hosted by M/A-COM at its San Diego Linkabit facilities. However, Jacobs and Viterbi, who had stayed with M/A-COM following the sale, left in 1985, and by 1990 M/A-COM had sold off Linkabit piecemeal.
All three Linkabit founders have received National Medals for lifetime achievements. 
- , Digitizing Communications - Linkabit page.
- "M/A-COM Linkabit". The San Diego Technology Archive at UC San Diego. Retrieved July 30, 2018.
- , List of IETF Meetings.
- Gross, Philip (January 1986). "Proceedings of the 16-17 January 1986 DARPA Gateway Algorithms and Data Structure Task Force". MITRE Corporation: 1.
The fourth meeting of the DARPA Gateway Algorithms and Data Structures Task Force was held 16-17 January 1986 at M/A Com Government Systems in San Diego, California.
- , San Diego Union Tribune - Linkabit genealogy.
- , San Diego Telecom - National Medals for Linkabit founders.