on Sirius Satellite Radio. XM, in particular, used radio-based superstations owned by Clear Channel Communications (now iHeartMedia) for much of its channel lineup during the early years of the provider's existence; the two Clear Channel radio superstations that remained on its lineup – WLW and WSIX – were dropped by XM Satellite Radio in March 2009. The signals of WSIX, KIIS and WLTW returned to the now-merged Sirius XM lineup in June 2011, along with two new additions, CHR station WHTZ (100.3 FM) in New York City and urban contemporary outlet WGCI-FM (107.5) in Chicago. All iHeartMedia stations have since been removed from Sirius XM as a byproduct of the launch and growth of co-owned streaming radio platform iHeartRadio; WGCI, WLTW, and WSIX were removed in 2013 after Clear Channel sold its stake in Sirius XM, WHTZ left the satellite service in June 2020 with a stream continuing on Sirius XM's online service, and KIIS was removed in June 2022, along with the Sirius XM-hosted WHTZ simulcast. Three other specialty format stations—WBBR (1130 AM) in New York City, the flagship affiliate of the Bloomberg Radio business news service; WCSP-FM (90.1) in Washington, D.C., the sole affiliate of C-SPAN Radio; and KBYR-HD2 (89.1 FM HD2) in Provo, Utah, part of Brigham Young University's BYU Radio service—are currently distributed on satellite radio, the former two of which are in lieu of their parent services maintaining conventional full-time affiliations with other radio properties across the United States. Most of WBBR's programming is also syndicated terrestrially to other stations through United Stations Radio Networks. (KPIG-FM [107.5] in Santa Cruz, California ended its terrestrial syndication deal with Dial Global in March 2010, becoming one of the few radio stations to place its audio stream behind a paywall; this made WBBR the only terrestrial superstation on U.S. radio.) KDIS (1110 AM, now KRDC) in Pasadena, California (serving the Los Angeles market) converted to superstation status in 2014, a byproduct of Radio Disney – for which it serves as the children's radio network's flagship outlet, and became its only analog terrestrial broadcaster as a result – refocusing its efforts primarily on mobile distribution after drawing down its remaining affiliates through both the sales or shutdowns of its owned-and-operated stations and the format conversions of terrestrial affiliates not owned by The Walt Disney Company. (Radio Disney began to reinstate conventional terrestrial radio coverage in 2016 through brokered arrangements