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zuckerwar · June 13th, 2002, 15:41

I think that mode S refers to transponders with four selectable digits, i.e. the ability to input a discrete code out of 4096 possibilities (4 x 4 x 4 x 4).

Mode C refers to the abliity to report your pressure altitude.

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June 13th, 2002, 15:41	#3
zuckerwar Newbie Join Date: Jun 2002 Location: Maryland Posts: 1	Re: Mode S Transponders I think that mode S refers to transponders with four selectable digits, i.e. the ability to input a discrete code out of 4096 possibilities (4 x 4 x 4 x 4). Mode C refers to the abliity to report your pressure altitude. [img]/ubbthreads/images/icons/smile.gif[/img]