RadioShack Corporation (formerly Tandy Corporation) is an American franchise of electronics retail stores in the United States, as well as parts of Europe, South America and Africa. As of 2008, RadioShack reported net sales and operating revenues of $4.81 billion. The headquarters of RadioShack is located in Downtown Fort Worth, Texas. RadioShack is also a sponsor for the Samsung/RadioShack 500 NASCAR Sprint Cup Series race at Texas Motor Speedway. On July 21, 2009, RadioShack announced a partnership with T-Mobile USA, and started offering the service in August 2009.
Source: Wikipedia Radio Shack available under the CC-BY-SA License.