What does AF stand for?

Alternative Frequency

This definition appears very rarely and is found in the following Acronym Finder categories:

Information technology (IT) and computers

Other Resources:

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Alleged Father (DNA testing; paternity determination) Alliance Forums Alliance Française Alliance Francophone (French language organization; various locations) Allied Force (flight simulator game) Allocations Familiales (French, family benefits office) Allowance Factor Almond Flour Alternating Field (demagnetization) Alternative Forum (Suriname)		Always Fresh Amahoro Foundation Amazing Fantasy (comic books) American Field (dog breed registry) American Flag American Forests American Fork (city in Utah) American Fractional (tools) American Freightways Amiga Format (magazine, now defunct, for Amiga computers)

Samples in periodicals archive:

In its report, the board suggests a remedy: "ATC controllers facing communication difficulties especially in urgent or emergency cases should not only wear handsets but immediately allocate an alternative frequency for such aircraft so that communication can be safeguarded with minimum interference from other aircraft.

Civil aviation in the spotlight over accident death

Normal protocols would suggest 'AR' toindicate end of message followed by 'VA' meaning 'end of work' or 'closingdown' before changing to an alternative frequency or station.

Star of th e big scream; Fangs a lot: Hammer Horror's Ingrid Pitt ...

After examining no less than five potential frequency homes for MMDS/ITFS users, the FCC concluded that there is no "readily identifiable alternative frequency band," and relocation to higher bands "could affect significantly the economics of current and planned.

The Road to 3G for Rural Telcos