I have a comparison of a handcrafted antenna with 3.8dB and the Jetvision with 5dB
The result is more or less the same as i am already at max range per location
However the Jetvision is more reliable on long term outdoor usage
Apparently Vinnant, FA, A3, Pimoroni are all meeting the range.(post 137)
The only one thats not is the AirNav antenna.
Edit: Corrected the hight of airplanes 10000m-orange, 13000m-blue
Ignore the plots from post 135, the tests in that post are in another location with about 90 degrees of horizon view. Its purely raw performance of those 4 antennas.
@ wiedehopf Thanks for the advice
I dont get that many M-lat planes, about 20/day acording to Flightaware stats.
Still, i can confirm that Vinnant, FA, Pimoroni and A3 achieve this range.
With Vinnant, the max was 500ish msg/s, the others i do not know,
If i have the time i will test them all, as indicated also with Graphs1090 attached.
That’s the same for me here and a reason why i recommend it to check this before doing too much try&error stuff.
My range plot fits exactly to the heywhatsthat range.
I am using the JetVision antenna. But without having a FA, i cannot compare
What i can say is that the Jetvision is not significantly better than the previous one which was individually built by an eBay user.
But based on other tests (e.g. filter) with my setup, it depends on your locationand environment.
As stated i am also now operating an AirSquitter from Jetvision which is the best combination with their antenna and it does not significantly outperform a Raspberry solution.
So even if i would have a FA antenna, i do not expect a significant difference
Being a high-site, any non-resonant ‘antenna’ will appear to perform, but surly the elevated feed (a significant fraction of a wave length) means this isn’t a 1/4λ ground-plane?
(not to mention the ‘ground-plane’ is less than 1/4λ radius meaning it’s not a ground-plane*)
‘*’ “In antenna theory, a ground plane is a conducting surface large in comparison to the wavelength”
I read that cantena works great, for me, a botenna is working even better.
Built using stock 1090mhz antenna, plus a simple ground plane, made out of 8, 69mm awg#6 ground wire, welded to a galvanized 1" flat washer, each bent on 45 angle
Same location and conditions, compared to a stock 1090mhz, I went from 40nm to up to 110nm.
The ‘preparation’ took a few quality hours with friends. The project contruction just a few minutes, I even spray paint it.
Anwering the question: no, it’s empty, I don’t think the airwaves will miss the liquid.