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Old October 14th 17, 02:03 PM posted to rec.aviation.soaring
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Default Glider near miss with Airliner (emergency climb) near Chicago yesterday?

After passing by I checked my PowerFlarm and found no transponder target.

For powerflarm to see a Mode C or Mode S transponders, the target needs to be interrogated by a ground station or another aircraft.
The powerflarm itself does not interrogate does it?