Thread: Transponder
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Old September 20th, 2006, 02:19   #10
PanJet
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Default Re: Transponder

Quote:
Originally Posted by TFaudree_ERAU View Post
There are only 3076 transponder codes for use. There are more than that many airplanes in the air with an ATC assigned code at the same time. The law of averages means somewhere along the line, 2 airplanes with the same code will be within range of the same radar and be in conflict.
Another question. If transponders go up through 7799 I believe, why are there only 3076 available codes? (Also, I thought there was 4076, but we'll go with this for now). Are the rest reserved (other than 75, 76, 77, and 12 hundred).
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