Am 06.02.2012 19:35, Lars Peder Hansen wrote:
Hello all,

I see a new type of transponder antennas on the market, for example the
Filser DP1090-5:
http://glider-equipment.nl/catalog/p...a-dp10905-p-63
These seem almost too good to be true; Low cost& complexity, easy
installation inside (non-carbon) fuselages..
Does anyone have experience with these antennas. Performance? Compatibility
with transponder models commonly used in gliders? Examples of EASA approved
installations?

Thanks,
Lars Peder (who finds that more and more of the airspace around him becomes
class C :-( )


Lars,

this antenna seems to be recommended for ballons and airplanes that have
a non-shielding structure. Filser ((the supplier of the antenna) has an
info document with recommendations for their different antennas.
Unfortunaltely the document seems to be available only in German :

http://www.funkwerk-avionics.com/cms...nneneinbau.pdf

For gliders they recommend their TransFelx model which is also covered
in the document.

If you need help with the translation, feel free to contact me.

--
Peter Scholz
ASW24 JE