Don't know the answer for sure, but the reply indicator on my Trig turns on
when I press the IDENT button. I think I'll send them an email and see what
they say.


"Chris Nicholas" wrote in message
...
I would like to understand this point about IDENT better.

As I understand it, a transponder TRANSmits when it is interrogated by
ATC SSR or when stimulated by TCAS, when it becomes a resPONDER to
that stimulus. Hence its name.

If IDENT is pressed when within reach of ATC, I can see how that would
flag it on their screen.

If not within reach of ATC SSR, does it transmit anyway, not in
response to anything?

Chris N.
(No agenda, just asking.)