VDC: Volts, direct current.
Viper: The popular nickname forthe F-16 fighter. (Its official moniker is the “Fighting Falcon,” which mostF-16 pilots detest.)
VW: Volkswagen.
VY: Ham radio shorthand for“very.”
WD-1: U.S. military-issuetwo-conductor insulated field telephone wire.
YL: Ham radio shorthand for “younglady.” All females regardless of age are designated YLs in the ham world.