Entercom Communications Corp. is a radio broadcasting company. The Company sells advertising time to local, regional and national advertisers and national network advertisers, purchasing spot commercials in varying lengths. It focuses on station-related digital platforms, which allow for audience interaction and participation, and integrated local digital marketing solutions and station events. Its stations are classified by their format, such as news, sports, talk, classic rock, urban, adult contemporary, alternative and country, among others. As of December 31, 2016, it had a portfolio of radio stations in 28 markets across the United States. It operates in various markets, which include Boston, Buffalo, Denver, Kansas City, Miami, Sacramento, San Francisco and Seattle. Its radio stations include KSWD Frequency Modulation (FM), KOSI FM, KYGO FM, KEPN AM, KKFN FM, KQKS FM, KRWZ Amplitude Modulation (AM), WSTR FM, WAXY AM/FM, WLYF FM, WMXJ FM, KBZT FM, KSON FM/KSOQ FM and KIFM FM.