Irving, TX – August 14, 2009 – EF Johnson Technologies, Inc. (NASDAQ: EFJI) today announced a Time Division Multiple Access (TDMA) option for its ES Series of Project 25 compliant portable and mobile radios. The Company will be announcing this option at the Association of Public-Safety Communications Officials (APCO) annual conference and exposition, August 16 – 19 at the Las Vegas Convention Center.

Project 25 has defined its next phase of interoperability to incorporate TDMA technology. Phase II Project 25 allows first responders to increase system capacity while maintaining backward compatibility with their Phase I equipment. In support of this industry initiative, EF Johnson Technologies, Inc. is announcing a TDMA option for its award-winning ES Series Radios. By choosing this option, customers can upgrade to TDMA when their system can support it.

“Our ES Series Radios have remarkable versatility because of their interoperability with Project 25 trunked and conventional modes, Motorola SMARTNET®/SmartZone®, and now an option for TDMA, said Michael Jalbert, president and chief executive officer of EF Johnson Technologies, Inc. “This option will also be available for our 51SL and 53SL ES Radios making ours, the only mid-tier radios on the market that have an option for TDMA.”