Northside Broadcasting (2NSB) is a community radio station based in Chatswood, Sydney, Australia. It operates on the FM 99.3 frequency and is referred to as the North Shore's FM99.3 on-air and for business purposes. In May 2013, FM99.3 celebrated its 30th anniversary. In 2009 it began restructuring its programs and music content to community-based magazine shows, specialist music programs and a more mainstream playlist.