Operated briefly as an RCN radio intercept site during the Second World War (1944-1945), Masset was reopened in 1949 as an RCN HF-DF station, with a complement of about 35 military personnel.
In 1970, the station was substantially enlarged and upgraded, and, in 1971, SIGINT operations at the former RCCS station at Ladner, B.C. were transferred to Masset. As a result of this upgrade, the station's complement was increased to about 240 military personnel and 60 civilians in support services. It remains about the same size today.
As of 1978, approximately 137 of the personnel at the station were members of the Communicator Research trade. In addition, a USN Naval Security Group (NSG) detachment of about ten personnel is permanently posted at Masset as part of the CF/USN Personnel Exchange Program.
In February 1994, it was announced that Masset will be converted to remote operations by 1997-98. The station will remain in service, but the number of personnel at the site will be reduced by about 90%.
In fact, Masset is a part of the NSG's worldwide CLASSIC BULLSEYE HF-DF network. In addition, the station is "believed to listen to the Soviet naval base at Petropavlovsk and to the Vladivostok headquarters of the giant Soviet Pacific ship and submarine fleet. It also has special antennae to listen to Russian fishing and spy trawlers..." In 1971, Masset replaced Ladner, a former RCCS intercept station located south of Vancouver. Ladner's SIGINT missions probably included the interception of trans-Pacific diplomatic, military, or commercial radio traffic; Masset may have taken on some of these missions as well.
The operations building and FRD-10 array at Masset were constructed in 1970, at a cost of $11 million, as part of the station's upgrade following the creation of the SRS. A $920,000 contract for the modernization of the operations building was awarded in 1991-92.
 "Canadian Forces Station Masset," National Defence, no date, pp. 1-2, Canadian Forces Communications and Electronics Museum collection.
 Maj K.G. Roberts, "CFS Masset: an old installation takes on new stature," Sentinel, January 1970, p. 14; "Information about your posting," p. 1; "Canadian Forces Station Masset, B.C.," Backgrounder, National Defence, February 1994.
 "Communicator Research (291)," INTERCOM: Training and Information Magazine for the Canadian Forces Communication Command, Vol. 14, Issue 2, Special Edition, April 1978, p. 22; Letter from Colonel J.G. Boulet, Director Information Services, National Defence, to S. McCann, 12 January 1978.
 "Canadian Forces Station Masset, B.C.," February 1994.
 Letter from Colonel J.G. Boulet to S. McCann, 12 January 1978.
 Bob Gilmour, "Our electronic spying hides behind cover stories," Edmonton Journal, 26 October 1982, p. A2.
 Report of the Auditor General to the House of Commons for the Fiscal Year Ended 31 March 1971, 1971, p. 82.
 During the Second World War, the RCCS' west coast stations monitored Tokyo-South East Asia traffic, Tokyo-South America traffic, etc.
 Jeffrey Richelson, The U.S. Intelligence Community (second edition), Ballinger, 1989, p. 204. This range corresponds to one or two "hops" by an HF signal. It is also possible to monitor multi-hop signals, but the accuracy of direction-finding is likely to be lower. When propagation conditions are good, HF signals can be monitored all around the world. The nominal range, however, may provide a rough indication of the area that Masset is assigned to monitor.
 The number of monopoles is confirmed in the description of an identical antenna array at CFB Gander in Sgt R.R. Lebeau, "Search and Rescue - HFDF," Communications and Electronics Newsletter, 1975, p. 18; dimensions estimated from air photos of Gander AN/FRD-10 array (A26701-118 and A26527-114), National Air Photo Library.
 Report of the Auditor General to the House of Commons for the Fiscal Year Ended 31 March 1971, p. 82; Defence Construction (1951) Limited Annual Report 1991- 1992, 1992, p. 22.
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