Border Beacon (Mid-Canada Line Site 212) was a United States Air Force military installation in Labrador, located approximately 190 km west of the Town of Hopedale. Border Beacon was a bistatic radar Doppler Detection Station on the Mid-Canada Line system of early-warning radar stations. Opened in 1957, and fully operational in 1958, Border Beacon was in operation for eight years. The eastern portion of the Mid-Canada Line was shut down in 1965 and the site was closed.