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#1
September 21st 06, 09:37 PM
posted to rec.aviation.soaring
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Becker transponder max operating altitude
The operating manual for the Becker ATC 4401-1-xxx transponder has the
following specifications: (http://www.beckerusa.com/products/de...4401-1-I+O.pdf) Max. operating altitude : - ATC 4401-1-175 15000 ft. - ATC 4401-1-250 50000 ft. and Flight level code (mode C) ICAO coding system 100-foot steps from - ATC 4401-1-175 -1000 to 31000 ft. - ATC 4401-1-250 -1000 to 62700 ft. Does anyone know what exactly this means? Is the 175W unit not really usable in sailplanes that plan to fly in the USA in areas where one would go above 15K? -Tom 
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