Complex sentence: CBS bought the station from the previous owner in 1931, officially moved the station to Washington (although the transmitter site remained in Virginia) and made WJSV its affiliate in the nation's capital.
Split into simpler sentences: CBS bought the station from the previous owner in 1931, officially moved the station to Washington, D.C., although the transmitter site remained in Virginia. CBS made WJSV its affiliate in the nation's capital.