What does 5NN/599 stand for?
What does 5NN/599 mean? This page is about the various possible meanings of the acronym, abbreviation, shorthand or slang term: 5NN/599.
We've found a total of 1 definition for 5NN/599:
Part of the jargon of radio operators which varies measurably with service; Amateur, Maritime, Aviation es country of origin: