July 28, 2020: Jim Marr AA6QI: HF Digital Voice

PLEASE NOTE: Because our meeting location is unavailable due to the coronavirus situation, this presentation will be webcast on the internet. See the IMPORTANT NOTE at the top of this page.

Digital modes for everything have been evolving for decades, bringing improved performance to many areas of ham communications. Over the past decade, that evolution has included a mode suitable for voice communication that could eventually displace SSB, just as SSB eventually replaced AM. Come learn about these HF-suitable digital voice modes and learn how you can get started exploring them yourself.

Jim Marr AA6QI has been licensed since 1965 (formerly WB6LOA), but was relatively inactive through a substantial part of his working years. He is actively enjoying the hobby again since his retirement in 2015. Jim has a BS in Engineering and Applied Sciences, and an MS in mechanical Engineering from Caltech. He spent seven years with the U.S. Navy operating submarine nuclear propulsion systems, and four years with Tetra Tech, Inc., leading their Marine Systems and Services Department. He was with NASA’s Jet Propulsion Laboratory for 31 years, mostly in line and project management. A most significant experience was leading the team that reprogrammed the Galileo Jupiter mission spacecraft while in flight to Jupiter, while simultaneously redesigning NASA’s Deep Space Network to support Galileo’s mission at Jupiter using its S-band 7 dBi low gain antenna after its X-band 43 dBi high-gain antenna failed to deploy.