Darrel Toepfer wrote in
:

However, I often see the
threat aircraft pass directly in front of my plane and nothing from
the ATD until it is well past. The ATD antenna had a clear view - so

But did they have a working transponder? g

Had to, or it wouldn't have picked them up at about a mile and just passed
my centerline. [Yes, if it only happened once in my lifetime, I would
think that maybe they say me, and that somehow made them realized they
hadn't turned their transponder on. But I have seen nearly identical
reactions on several occasions.]

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James M. Knox
TriSoft ph 512-385-0316
1109-A Shady Lane fax 512-366-4331
Austin, Tx 78721
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