Licensed to Mount Shasta, California, United States, the station is currently owned by Southern Oregon University.
Station personalities through the years included Rees, his sons Dave Jr. and Jon, Dave Niles, Stephen Rizzo, Michael Killian, Jim Mourgos, Paul Whitney, Perry Sims, John Hart, Fred Gerding Jr., Timothy Harris, Mark Hickenbotham, Bill Craig, Dave Jr.'s son Dennis Rees, Brian Hembling and Robin Von.
KWSD was one of the stations sold to Siskiyou Radio Partners, Inc. in 1995, owned by Tom Huth and Bob Darling.
Two years later, Jefferson Public Radio, in association with Southern Oregon University, acquired both KMJC (AM) and KSYC (AM) from Four Rivers.
Jefferson Public Radio and its programming covers far Northern California and Southern Oregon with an affiliation of small local stations.