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Thanks for adding the refs, detagged. But those two sections need some real work to be comprehensible to a casual reader |
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A [[digital]] [[code]] using an eleven-wire interface that is used to transmit uncorrected [[barometric]] [[altitude]] between an encoding altimeter or analog [[air data computer]] and a [[transponder]]. It is a modified form of a [[Gray Code]] and is sometimes referred to as a "Gray Code" in avionics literature.<ref name="Code List"> [http://www.airsport-corp.com/modecascii.txt List of altitudes and Gillham codes]</ref>
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