NF

NF may mean:Air Vanuatu IATA airline designatorNavy FieldNational FrontNelly FurtadoNeurofibromatosisNew Foundations, in set theoryNewfoundland and Labrador, Canada: postal code (no longer in use, replaced by NL)NF-BoardNoise figureNorfolk Island: ISO 3166-1 alpha-2 and FIPS PUB 10-4 territory codeNormal formNowa Fantastyka, a Polish sf&f monthly magazineNever Forget, a Kingdom from the online game UtopiaNuestra Familia, coalition of Chicano gangs in North AmericaNational Formulary
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.nf is the Internet country code top-level domain (ccTLD) for Norfolk Island. While there is no rule requiring a local presence to register domains in this TLD, the pricing is significantly higher than most other domains, which has discouraged its use. Although registrations at the second level are the most expensive, they are still more common than third-level registrations, and most names in use are for sites relating to Norfolk Island.
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French standards

Abbreviation for noise figure.

The ratio of the output noise power of a device to the portion thereof attributable to thermal noise in the input termination at standard noise temperature (usually 290 K). (188 ) Note: The noise figure is thus the ratio of actual output noise to that which would remain if the device itself did not introduce noise. In heterodyne systems, output noise power includes spurious contributions from image-frequency transformation, but the portion attributable to thermal noise in the input termination at standard noise temperature includes only that which appears in the output via the principal frequency transformation of the system, and excludes that which appears via the image frequency transformation. Synonym noise factor.

<networking> The country code for Norfolk Island.
(1999-01-27)

Norfolk Island