What is the meaning of S/N?

(Military) S/N stands for signal to noise
Department of Defense Dictionary of Military and Associated Terms. 31 January 2011.
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APAMilitary Dictionary (DoD). (2011). s/n. Retrieved September 30, 2026, from http://smartdefine.org/s%2Fn/definitions/1958751
ChicagoMilitary Dictionary (DoD). 2011. "s/n" http://smartdefine.org/s%2Fn/definitions/1958751 (accessed September 30, 2026).
HarvardMilitary Dictionary (DoD) 2011, s/n, Smart Define, viewed 30 September, 2026, <http://smartdefine.org/s%2Fn/definitions/1958751>.
MLAMilitary Dictionary (DoD). "s/n" 4 April 2011. Web. 30 September 2026. <http://smartdefine.org/s%2Fn/definitions/1958751>
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