WCSP-FM 90.1 C-SPAN is a Washington D.C based radio operator. The domestic audience of Washington, D.C., and Baltimore, Maryland on 90.1 MHz as well as on HD format and adopts the format of Public Affairs. The ERP consumption of the channel is 36,000 watts. The corporate offices of the station are based near Capitol Hill in C-SPAN’s. Its call sign was derived by the name of its owner Cable-Satellite Public Affairs Network.