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Line 43: The U.S. Army awarded a contract in 1968 to F&M Systems to build AN/FLR-9 systems for [[USASA Field Station Augsburg]], Germany, and Ramasun Station in [[Mueang Udon Thani District#Ramasun Station\|Udon Thani]], Thailand ({{coord\|17.2919\|N\|102.8682\|E\|scale:2000}}). Both were installed in 1970.<ref>The Army version has the same design as the Air Force version, but the design of the delay lines in the Beam Forming Networks inside the Central Building are different. The Army used what is called a "Lumped Constant" delay line design and the Air Force used a "Coaxial" delay line design.</ref> The Ramasun Station array was dismantled in 1975 following base closure. During the 1970s, the Japanese government installed two large Wullenweber arrays, similar to the FRD-10, at [[Chitose, Hokkaidō\|Chitose]] and [[Miho, Ibaraki\|Miho]]. ===Surviving arrays and replacements===

Circularly disposed antenna array: Difference between revisions