# CAM-MAIN

Compiled by [Robin Monks](https://coldwar.tech/about), a Cold War archival expert.

*One of four Canadian Main stations on the DEW Line, serving as CAM Sector headquarters at Cambridge Bay. The station directly catalyzed the transformation of Cambridge Bay from a seasonal Inuit camp into a permanent settlement.*

## Metadata

| Field | Value |
|-------|-------|
| Coordinates | 69°06'58"N, 105°07'08"W |
| Status | converted |
| Operational Period | 1957–1993 (continues today as NWS LRR and Logistic Support Site) |

CAM-MAIN was one of four Canadian Main stations on the DEW Line, alongside PIN-MAIN (Cape Parry), FOX-MAIN (Hall Beach), and DYE-MAIN (Cape Dyer). Serving as the military Data Center for the CAM Sector and a primary transportation hub, it had a deeper and more lasting impact on its surrounding community than perhaps any other DEW Line station — the construction and operation of CAM-MAIN directly catalyzed the transformation of Cambridge Bay from a seasonal Inuit camp into a permanent settlement.

## CAM Sector stations

During the DEW era, CAM-MAIN controlled eleven subordinate stations — five auxiliary and six intermediate — one of the largest sectors on the line:

- **CAM-1** (Auxiliary) — Jenny Lind Island, Nunavut → DEW operations ceased 1992
- **CAM-2** (Auxiliary) — Gladman Point, Nunavut → NWS SRR, October 1990
- **CAM-3** (Auxiliary) — Shepherd Bay, Nunavut → NWS LRR, July 1989
- **CAM-4** (Auxiliary) — Pelly Bay, Nunavut → NWS SRR, September 1991
- **CAM-5** (Auxiliary) — Mackar Inlet, Nunavut → DEW operations ceased 1992
- **CAM-A** (Intermediate) — Sturt Point, Nunavut — closed 1963
- **CAM-B** (Intermediate) — Hat Island, Nunavut — closed 1963; re-established as NWS SRR, September 1991
- **CAM-C** (Intermediate) — Matheson Point, Nunavut — closed 1963
- **CAM-D** (Intermediate) — Simpson Lake, Nunavut — closed 1963; re-established as NWS SRR, September 1991
- **CAM-E** (Intermediate) — Keith Bay, Nunavut — closed 1963
- **CAM-F** (Intermediate) — Scarpa Lake, Nunavut — closed 1963

## Site layout

The station occupied 1,627 acres along the coastal margin of a rolling plateau at approximately 100 feet above sea level, with steep cliffs (40–80 feet) bordering the western arm of the bay. The landscape featured innumerable swamp-margined lakes and ponds, with Uvayuq (Mount Pelly), at 200 metres (656 feet), rising approximately 15 km to the northeast. Potable water was pumped from a lake through a heated pipeline. Climate extremes at the station ranged from −62°F (−52°C) to +77°F (+25°C), with approximately 29 inches of annual snowfall.

## Radar and communications

During the DEW era, CAM-MAIN used the AN/FPS-19 L-band search radar housed in a geodesic radome, with tropospheric scatter antennas providing long-haul communications to adjacent stations. The site housed a military-manned Data Center — a feature it shared with PIN-MAIN, distinguishing these stations from those where contractors operated the sector headquarters. With the North Warning System transition in September 1989, the site received an AN/FPS-117 solid-state 3-D radar, which remains operational today.

## Operations

CAM-MAIN operated as one of six Main stations on the primary DEW Line, providing sector command and communications hub functions alongside POW-MAIN, BAR-MAIN, PIN-MAIN, FOX-MAIN, and DYE-MAIN. The CAM Sector was one of the largest on the line, with eleven subordinate stations spanning Victoria Island and the central Arctic coast. The six intermediate gap-filler sites were closed in 1963 when the AN/FPS-23 Doppler detection concept was scaled back across the entire line.

## Community impact

The area around Cambridge Bay has approximately 4,000 years of indigenous habitation, from pre-Dorset cultures through to the Thule ancestors of modern Inuit, who arrived circa 1250 CE. A LORAN navigational beacon had served the area from 1947, but it was the DEW Line that transformed Cambridge Bay into a permanent settlement.

Approximately 200 Inuit were hired to help build the station beginning in 1955. Many stayed permanently, and a community formed across the bay, with schools and municipal services following. The DEW Line brought wage employment, air service, and infrastructure that anchored what had been a seasonal camp into a year-round settlement — a pattern seen elsewhere in the Arctic but nowhere more dramatically than at Cambridge Bay.

## Transition and current status

CAM-MAIN transitioned to the North Warning System in September 1989 with the installation of an AN/FPS-117 solid-state 3-D radar. The DEW Line was formally inactivated and the NWS officially activated on 15 July 1993. Today the site operates as both a Long Range Radar and Logistic Support Site (LRR/LSS), one of the largest continuously manned NWS stations with approximately 18 personnel. Cambridge Bay itself has grown into the administrative center for the Kitikmeot region of Nunavut, with a population of approximately 1,900.

## Resources

- [CAM-Main — DEW Line Adventures](https://lswilson.dewlineadventures.com/cammpics/)
- [Cambridge Bay — The Canadian Encyclopedia](https://www.thecanadianencyclopedia.ca/en/article/cambridge-bay)
- [Cambridge Bay — Wikipedia](https://en.wikipedia.org/wiki/Cambridge_Bay)

## Resources

- [CAM-Main — DEW Line Adventures](https://lswilson.dewlineadventures.com/cammpics/) (Larry Wilson)
- [Cambridge Bay — The Canadian Encyclopedia](https://www.thecanadianencyclopedia.ca/en/article/cambridge-bay) (The Canadian Encyclopedia)
- [Cambridge Bay — Wikipedia](https://en.wikipedia.org/wiki/Cambridge_Bay)
- [Distant Early Warning Line — Wikipedia](https://en.wikipedia.org/wiki/Distant_Early_Warning_Line)
- [DEW Line Stations — Secrets of Cold War Radar](https://secretsofcoldwarradar.omeka.net/exhibits/show/canada-s-radar-chains/the-dew-line/stations)
- [DND DEW Line Environmental Legacy — Canada.ca](https://www.canada.ca/en/department-national-defence/corporate/video/other/distant-early-warning-line-an-environmental-legacy-project.html) (Department of National Defence)

## Related

- [The DEW Line](https://coldwar.tech/systems/dew-line) (Systems)
- [POW-MAIN](https://coldwar.tech/places/pow-main) (Places)
- [BAR-MAIN](https://coldwar.tech/places/bar-main) (Places)
- [PIN-MAIN](https://coldwar.tech/places/pin-main) (Places)
- [DYE-MAIN](https://coldwar.tech/places/dye-main) (Places)
- [FOX-MAIN](https://coldwar.tech/places/fox-main) (Places)

Tags: Radar, Defense, DEW Line

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Canonical URL: https://coldwar.tech/places/cam-main
Last updated: 2026-04-10