The station signed on October 1, 1964 as WTSJ-TV becoming the first English-language station in the island and the first to carry a full-time affiliation with a television network from the US mainland, that being NBC. In 1972, the station signed off.
1967–1970
SVG NEEDED
1970–1972
SVG NEEDED
WSJU
1984–1986, 1991–1997
WBNB Market WSJU ID .wmv
ID Call WSJU -TV Canal 18 Tele San Juan (1986)
Alternate variant (1986)
Alternate variant (1991–1995)
Alternate variant (1995–1997)
Channel 18 came back on July 29, 1984, as WSJU with the NBC affiliation from the original incarnation of channel 18 carrying over. In 1991, the station dropped NBC and became an independent station.