Cobham to upgrade Navy airborne electronic warfare systems with solid-state RF components

Posted by John Keller

LANSDALE, Pa., 12 Jan. 2010. Engineers at Cobham Sensor Systems in Lansdale, Pa., are replacing the traveling wave tube (TWT) components in the U.S. Navy AN/ALQ-99 airborne electronic warfare system with a solid state amplifier module and DC-DC converter.

Cobham experts are doing the work under terms of a potential $11.5 million contract from the Naval Surface Warfare Center in Crane, Ind., as part of the Band 5/6 TWT Replacement Module Assembly (TRMA) project. The ALQ-99 is on the Navy carrier-based EA-18G Growler and EA-6B Prowler electronic warfare aircraft.

"The TRMA program replaces older technology with new for enhanced reliability and ease of maintenance," says Steve Schaefer, president of Cobham Sensor Systems. "The ALQ-99 is a vital part of the suite carried by US Navy EA-6B Prowler and EA-18G Growler aircraft to jam and suppress hostile radars and radar guided weapons."

For more information contact Cobham Sensor Systems online at


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