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What does OO stand for?

OO stands for Official Observer (amateur radio)

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

  • Organizations, NGOs, schools, universities, etc.

See other definitions of OO

Other Resources:
We have 13 other meanings of OO in our Acronym Attic

Samples in periodicals archive:

The Lynx's 216kt record, however, stands in the Federation Aeronautique International (FAI)'s books until Sikorsky conducts the flight with an official observer present from the National Aeronautic Association, he adds.