Circularly disposed antenna array: Difference between revisions

Revision as of 01:25, 22 July 2022

Revision as of 06:03, 22 July 2022

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In 1959, the U.S. Navy contracted with [[ITT Corporation|ITT]] Federal Systems to deploy a worldwide network of [[AN/FRD-10]] HF/DF arrays based on lessons learned from the Bondville experimental array.

[[ImageFile:Sobe Communications Site.jpg|thumb|left|CDAA at US Navy Sobe Communications base, [[Yomitan]], [[Okinawa]], Japan]]

The FRD-10 at NSGA Hanza, Okinawa was the first installed, in 1962, followed by eleven additional arrays, with the last completed in 1964 at NRRF Imperial Beach, CA. (Silver Strand) which was demolished in 2014. Due to their immense size, the ___location of the Bondville array ({{coord|40.0494|N|88.3807|W|scale:2000}}) and the other post-war Wullenweber arrays are clearly visible in high-resolution aerial photography now available on the internet.

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The first FLR-9 was installed at [[RAF Chicksands]] ({{coord|52.0443|N|0.389182|W|scale:5000}}) in the United Kingdom in 1962. The second FLR-9 was installed at [[San Vito dei Normanni Air Station]] ({{coord|40.64700|N|17.83900|E|scale:5000}}), Italy also in 1962. Following base closures, the arrays at Chicksands and San Vito were dismantled in 1996 and 1993, respectively.

[[ImageFile:CDAA Elmendorf AFB.PNG|thumb|left|FLR-9 Wullenweber array at [[Elmendorf Air Force Base]], [[Alaska]], USA, completed in 1966.]]

A second contract was awarded to Sylvania to install AN/FLR-9 systems at [[Misawa AB]], Japan; [[Clark AB]], Philippine Islands; Pakistan (never built); [[Elmendorf AFB]], Alaska; and Karamürsel AS, Turkey. The last two were completed in 1966. The Karamürsel AS was closed and array was dismantled in 1977 in retribution for the suspension of U.S. military aid to Turkey. The Clark AB array was decommissioned after the Mt. Pinatubo volcano eruption in 1991. It was later converted into an outdoor amphitheater. Demolition of the Misawa FLR-9 began in October 2014.