D F definitions

D-F

Aviation acronym: Direction Finding
Found on http://www.encyclo.co.uk/visitor-contributions.php

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D-F

Direction Finder
Found on http://www.encyclo.co.uk/visitor-contributions.php

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D-F

Direction Finding
Found on http://www.encyclo.co.uk/visitor-contributions.php

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D/F

direction finding.
Found on https://www.infoplease.com/dictionary/df

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