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Talk:Plan position indicator

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This is an old revision of this page, as edited by Europrobe (talk | contribs) at 18:22, 1 November 2005 (Plan ''Polar'' Indicator?). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.
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Isnt PPI supposed to mean Plan Polar Indicator? This to distinguish it from the early radar displays only showing targets in one specific direction. Anyone? europrobe 18:22, 1 November 2005 (UTC)[reply]

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