Science Fair Project Encyclopedia
KSJN (99.5 FM) is the flagship station of Minnesota Public Radio's classical music network, serving the Twin Cities region. The 99.5 frequency dates to 1945 when WMIN experimented with the medium. It was sold to WLOL in 1956, and kept that name until being sold to MPR in 1991. In the 1970s while it was WLOL-FM, the station participated in "quadcast" (quadraphonic stereo) experiments with an earlier incarnation of itself, when the KSJN call sign was used for 91.1 FM in the Twin Cities.
- Mark Durenberger (1999). Early quad-casts and other fun. The Broadcast Archive: War Stories.
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