sentences:  The current format began in April 2005.Previously, WSAM had programmed adult standards under the name "Sam 1400 AM", and WSAG (originally licensed to Pinconning, Michigan before the city of license changed to Linwood, an unincorporated community north of Bay City) had broadcast an automated, commercial-free mix of 1950s-1970s oldies since opening in November 2002.During the 1960s and 1970s, WSAM was a popular top 40 music station; during the 1980s, it played oldies.