That’s a nice antenna setup!
A quick note on HeyWhatsThat – if you’re using it online always make sure to specify ?refraction=1 in the URL, in otherwords this:
That enables the Refraction box on the website where you can enter the value 0.25 which is correct for our use, ie 1090 Mhz through air. If you don’t do this then it won’t show an option for Refraction and by default under the hood will use 0.14 which is the correct value for visible light through the air, that being the primary purpose of the site.
See this post from me where I found this out when getting to the bottom of a discrepancy.