User talk:BaronVonQuattro

Welcome

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A barnstar for you!

The Original Barnstar

What is the source for "The datum used by altitude encoders is −1200 ft although many will not output anything lower than −1000 ft. Negative flight levels are included in the code to permit altitude measurement at low levels when the ambient pressure is high." in http://en.wikipedia.org/wiki/Gillham_code ? In ICAO Annex 10 Vol 4 table has lowest Altitude value

ALTITUDE A1 A2 A4 B1 B2 B4 C1 C2 C4 D1 D2 D4 SQUAWK -1000 0 0 0 0 0 0 0 1 0 0 0 0 0020 Are there any source for -1100 ft and -1200 ft? BR Lauri Kreen, radar expert, Estonia

LauriKreen (talk) 17:56, 6 February 2013 (UTC)[reply]