closure. The site was linked to Site 41 (Keflavik, Iceland) and to Site 43 at Sornfelli Tórshavn (Faroe Islands) by 235 and 292 mile shots respectively. Equipped with 2x 120 ft antennas for the Keflavik shot operating at 50 kilowatt the Sornfelli Tórshavn shot was accomplished by 2x 60 ft antennas operating at 10 kilowatt. Little known is that this site also was the entry point for the SOSUS system. When satellite communications made the troposcatter communications system obsolete, Site 42 was shut down along with the rest of the NARS system in 1988. Remaining idle through the end of manned ops at Hofn Air Station, the troposcatter antennas and support buildings have been demolished in the mid-1990s with the rest of the Air Station. The concrete blocks for the billboard antennas and feed horns still remain. Site 43 – Tórshavn, Faroe Islands Sornfelli Mtn at grid 62°4'1"N 6°58'0"W was a Danish installation (Island Command Faroes) and NATO early warning radar system consisting of 2 radars until closure in 2002. One of the radars is currently still operating as a civilian airtraffic control radar. This site had Tropo-scatter shots to site 44 and to site 42 Site 44 – RAF Mormond Hill at grid 57°36'13"N 2°1'58"W in the NE of Scotland was home to several troposcatter antennas respectively operated by USAF - providing comms to and from RAF Buchan via site 46 - the British Army and British Telecom. After USAF closure the site was transferred to the MoD in 1993 and is now used for commercial British Telecom ops. Site 46 – RAF Fylingdales at grid 54°21'32"N 0°39'50"W station was built by the Radio Corporation of America (RCA) in 1962, and originally maintained by RCA but later was operated and maintained by ITT/FELEC. This site consisted of a 10kW shot to site 44 and a 10kW shot south that eventually interfaced with the 486L system and the rest of Europe See also Radio propagation Microwave ACE High - Cold war era NATO European troposcatter network White Alice Communications System - Cold war era Alaskan tropospheric communications link List of White Alice Communications System sites TV-FM DX List of DEW Line Sites Distant Early Warning Line References External links Sornfelli radar Eyes and Ears of the arctic Telecommunications equipment of the Cold War Radio frequency propagation Tropospheric scatter systems Military radio systems