Fransois van Haaff, the technical officer for Airspace and Equipment of =
the European Gliding Union, published a concise article on Mode S where =
the definition of Extended Squitter can be found. See =
http://www.glidingmagazine.com/Featu...e.asp?id=3D411, Some details =
(e.g. the expected release dates and prices of LAST) may be outdated, as =
his article is from 2004/4.