David K. Rehr, Ph. D., president and CEO of the National Association of Broadcasters, announced on May 6 that he is resigning.

"I have enjoyed leading America's broadcasters through this time of change and challenge," said Rehr. "Our efforts to educate America about the digital television transition have been enormously successful, and our effort to reinvigorate radio through the Radio Heard Here campaign is positioning radio broadcasters well for the future."

"I am looking forward to building on these experiences and working with the broader Washington community to further advocacy efforts through marketing, communications and education," he continued.

"David made a significant contribution and has been extremely dedicated to making NAB a stronger organization," said NAB Joint Board Chairman Jack Sander. "On behalf of the board of directors and our member stations, we thank him for his leadership and wish him well in the future."

"In large part due to David's efforts, we have a very solid infrastructure in place. Our senior staff members are experienced and extremely talented. Our board of directors and members are a powerful force comprised of the best minds in broadcasting," said Sander.

"We are prepared and well positioned to represent radio and television's best interests as we progress into the digital future," Sander continued.

Rehr said he plans to continue in his current role during a transition phase. During an interim period, Janet McGregor, NAB's chief operating and financial officer, will work closely with Rehr and assume day-to-day duties until a successor is named.

Prior to joining NAB in 2008, McGregor spent 26 years at Lockheed Martin Corporation, most recently as president and CEO of the Lockheed Martin Investment Management Company.