DCHP-1 Online
Pinetree radar system 
a coast-to-coast system of radar stations across southern Canada, equipped to detect and warn of approaching aircraft or missiles.
See also: Pinetree Line
- 1958 Canada's Pinetree radar system, backstop of the nation's electronic defenses, will take on a supplementary chore this spring.
- 1958 Canada's Pinetree radar system, backstop of the nation's electronic defenses, will take on a supplementary chore this spring.