devarshpatel19
6th Jan 2011, 13:20
Hello,
What is the difference between ALT mode, AUTO mode and ON mode of Transponder?
Thanks!
ahramin
18th Jan 2011, 04:09
ALT turns on both the mode A transponder and the mode C altitude reporting.
On turns on only the mode A, for use when the mode C altitude reporting is not working properly.
Auto is the preferred setting, and will turn on both mode A and mode C, as well as mode S when applicable.
Sciolistes
18th Jan 2011, 04:57
Don't you remember posting this thread?
http://www.pprune.org/tech-log/438968-transponders.html