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 Corporation was formed in mid-1968 in Los Angeles by Irwin M. Jacobs, Andrew Viterbi and Leonard Kleinrock (who soon left). 
One of the better known Linkabit products is VideoCipher, an analog scrambling system for television developed in 1983.
Linkabit hosted the first IETF meeting in January, 1986.
More than 75 direct or indirect Linkabit spinoff companies have been identified — a rate twice that of Fairchild Semiconductor, the legendary progenitor of Silicon Valley. 
The best known Linkabit spinoff is Qualcomm, which was founded by Jacobs, Viterbi and five other Linkabit alumni in July 1985.
All three Linkabit founders have received National Medals for lifetime achievements. 
- ^ , L-3 Communications - Linkabit page.
- ^ a b , Digitizing Communications - Linkabit page.
- ^ , List of IETF Meetings.
- ^ , San Diego Union Tribune - Linkabit genealogy.
- ^ , San Diego Telecom - National Medals for Linkabit founders.