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Old 27th May 2013 | 15:49
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DaveReidUK
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Joined: Jan 2008
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From: Reading, UK
Typically aircraft do not transmit magnetic heading on ADS-B but send out a GPS based ground speed vector with respect to the true north.
Yes, though a surprising number of aircraft in this day and age still have ADS-B that isn't based on GPS.
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