I've done the same thing by calling up ATC and asking if they are
getting a reply and if the altitude checks with my altimeter.

Not official, but I sometimes am suspicious of certified transponders
and don't want pay a shop to find out if I need to take it to the shop.

Brian Case



Eric Greenwell wrote:
Jack wrote:
Mike the Strike wrote:
...and what is the downside of operating a new but uncertified
transponder? Can't be worse than getting run over by a bizjet.


One serious downside would be to cause a false Resolution Advisory
indication on another ship's TCAS, resulting in a traffic conflict where
none was likely otherwise, either with the "offending" glider or another
ship.

What does "certification" entail? When my transponder was installed, all
it got was a 5 minute "VFR check" with a little box about 5 feet from
the glider that showed it responded to interrogations and that the mode
C altitude reported was the airport elevation. It that all it takes to
ensure a TCAS isn't fooled?

--
Change "netto" to "net" to email me directly

Eric Greenwell - Washington State, USA

www.motorglider.org - Download "A Guide to Self-launching Sailplane
Operation"