What does QSA stand for?

MLA style: "QSA." Acronym Finder . 2012. AcronymFinder.com 2 Jun. 2012 http://www.acronymfinder.com/Quadrifilar-Spiral-Antenna-(QSA).html
Chicago style: Acronym Finder . S.v. "QSA." Retrieved June 2 2012 from http://www.acronymfinder.com/Quadrifilar-Spiral-Antenna-(QSA).html
APA style: QSA. (n.d.) Acronym Finder. (2012). Retrieved June 2 2012 from http://www.acronymfinder.com/Quadrifilar-Spiral-Antenna-(QSA).html

Quadrifilar Spiral Antenna

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