New London Resident Honored For Work At Naval Undersea Warfare Center

David Culbertson one of two recipients of Office of Naval Research invention award

A New London resident and retired employee of the Naval Undersea Warfare Center in Newport, R.I., was named as one of two winners of the Office of Naval Research Vice Adm. Harold G. Bowen Award for Patented Inventions. David L. Culbertson received the award along with Raymond F. Travelyn, a Newport engineer. The honor "recognizes patented inventions that have had a significant impact upon the operation of the Navy as measured by the extent of its adoption for Navy use, cost savings, increased military capability, or increased quality of life of Navy personnel."

The following is a press release from the Naval Undersea Warfare Center:

The pair invented the Full Duplex Transceiver (FDT), also known as the TravPak, a communications device which dramatically increased data rates for error-free transmission via satellite aboard submarines. Previous systems required at least two days to transfer data for threat verification – putting both the platform and the crew at risk. The TravPak reduced the time needed to transfer data by 1000 times.

Until it was replaced by the Common Submarine Radio Room (CSRR), the FDT was installed as a temporary alteration on about 20 platforms per year for about 10 years at a total cost of $600,000. Because the FDT used existing antenna hardware, the invention saved the Navy approximately $60 million by eliminating the need to design, develop, test, and install new UHF antennas.

Travelyn, an electronics engineer also in the Undersea Warfare Electromagnetic Systems Department, has worked at NUWC Newport for 26 years. As a member of the CSRR program since 2004, he serves as the lead systems engineer directing the day-to-day work of subject matter experts for each CSRR subsystem.

A resident of Westerly, R.I., Travelyn holds a bachelor of science degree in electrical engineering from the University of Bridgeport in Connecticut.

A resident of New London, Conn., and a U.S. Navy veteran, Culbertson retired from the Undersea Warfare Electromagnetic Systems Department in 2005, where he had worked as a technician for 20 years. He was a member of the CSRR program and holds several other patents developed during his career at

NUWC Division Newport, part of the Naval Sea System Command, is one of two divisions of the Naval Undersea Warfare Center. NUWC Division Newport’s mission is to provide research, development, test and evaluation, engineering and fleet support for submarines, autonomous underwater systems, undersea offensive and defensive weapons systems, and countermeasures. NUWC’s other division is located in Keyport, Wash.

Daniella Ruiz March 27, 2013 at 10:12 AM
full duplex eh? i though they had all that worked out back in the 1950's.
Trevor Barron April 27, 2013 at 04:36 PM
Hi Ray and Dave! congrats on your award. Have to agree with Daniella -not sure how you get a patent on inventing full duplex. Glad to see the commercial modem applique finally was appreciated.


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