On Sunday, July 31, 2016 at 11:51:41 AM UTC-4, Dan Marotta wrote:
Thanks again, Andrzej.

I forgot to mention that my transponder antenna is on the underside of
the propeller dome and so I shouldn't have problems with shadowing from
the fuselage. My concern was with the "In" portion of the ADS-B system
as received by the Stratux with dual antennae on the glare shield. I
flew that system in my Pipistrel Sinus (still for sale, BTW) and it
seemed to work well picking up replies to "Out" equipped aircraft.
Also, during my ferry flight from Mexico to Arizona, my instructor had a
Stratus and iPad in his lap and we always had weather information
available so maybe there won't be a problem with my seeing ADS-B In
transmissions. Time will tell, and if the Stratux doesn't work, then
there are commercial systems to look at.


On 7/30/2016 4:23 PM, Andrzej Kobus wrote:
If you keep loosing signal rest assured FAA will send you a letter of non-compliance.

--
Dan, 5J

I also have ADS-B in in addition to PF that works very well, considering I have ADS-B out. I get all traffic now.

A couple of months ago while flying in the North East I had an encounter with a fast moving airplane that was on a collision course with me. Stratus 2S with ForeFlight alerted me to the conflicting traffic while my PowerFlarm was completely silent, not even a warning about transponder equipped traffic. I initially did not see the conflicting traffic, even though I had it on my screen for at least 30 seconds. I finally spotted the traffic when it was really close and exactly at my altitude. That day I figured all the frustration finally paid off.

In regards to shadowing I was not talking about transponder antenna but the GPS antenna for a position source. The position sources for ADS-B are different beasts comparing to our gliding GPS devices that seem to give position at all times without issues, even banking at 45 deg, but do not meet other requirements for ADS-B position sources.