 The station broadcasts on WCSP (90.1 FM) in Washington, D.C., is also available on XM Satellite Radio channel 120 and is streamed live at c-span.org.It was formerly available on Sirius Satellite Radio from 2002 to 2006.Lamb semi-retired in March 2012, coinciding with the channel's 33rd anniversary, and gave executive control of the network to his two lieutenants, Rob Kennedy and Susan Swain.