Download coordinates as: Elliston Ridge Air Station (ID: N-22B, C-22B) was a General Surveillance Gap Filler Radar station in the Canadian province of Newfoundland and Labrador, It was located 74 miles (119 km) north-northwest of St.

The site was established in 1943 as a United States Army anti-aircraft spotting station (Codename: Duo) with an SCR-271 early warning radar.

Fifty-two members (three officers and 49 enlisted men) of the 685th Air Warning Company were stationed at Elliston from winter 1943 to November 1944.

In 1957 a manned Gap Filler radar station was constructed, funded by the United States Air Force, under operational control of Red Cliff Air Station and part of Pinetree Line of Ground-Control Intercept (GCI) radar sites.

[2] Units: Assignments: This article incorporates public domain material from the Air Force Historical Research Agency