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TWiRT 149 - DGPS with Gary Galbraith


The radio frequencies below the AM broadcast band have found several interesting uses over the past century. A modern-day use of these low frequencies is to disseminate data to correct GPS readings, especially for ships, boats and barges.

Gary Galbraith works with Nautel, a provider of DGPS transmitters to the US Government. We look at a DGPS transmission site in Mississippi and discuss this technology. We also discuss other “radio navigation aids” in the modern world.

Chris Tarr and Kirk Harnack are your hosts.

This Week In Radio Tech is sponsored by Axia and the range of studio accessories and intercoms for Axia IP-Audio consoles. Visit for more information.


TWiRT 149 - DGPS with Gary Galbraith

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