 KQSL has translator station KQSL-LD on RF VHF channel 4 (virtual channel 8.4) atop Mount Tamalpais in Marin County to boost coverage into San Francisco and Oakland.The history of UHF television broadcasting in the Bay Area began with the sign-on of KSAN, operating on Channel 32, in 1954.KBAY, which was to operate on Channel 20, was intended to be another early UHF station in San Francisco, but it didn't sign on the air until 1968.