These tests/screenshots were done within 10 minutes of each other. The results were actually surprising. I actually recieved a few more msg/sec with the attic mount. I am going to probably call this similar performance between both locations. And possibly a “tiny” bit better in the attic. ???
I do have the antenna mounted under an aluminum roof vent in the attic, possibly helping?! I dunno.
The biggest surprise was that I figured that the roof shingles, sheeting, and all the other crap in the attic would have been a bigger detriment to the number of messages recieved in the attic. It really doesn’t appear that is the case.
I was actually about to mount my antenna on the roof this week (permanently), run ground wire, coax, etc. After viewing these results, maybe i’ll just stay put in the attic.
Everyone can now attack me for having results that don’t follow the rules of science …
I’d say your rooftop is better with 3.38 positions per aircraft as compared to 1.44 positions per aircraft in the attic.
Flight Aware used to have the positions per aircraft on the site pages but dropped it. Not good to compare sites since they can vary wildly but really good for monitoring performance on a single site. You’d like lots of positions per aircraft as compared to a collection of single positons for many aircraft.
It is a fast check to see if things are working correct since positons per aircraft is relatively stable.
Oh wow, I didn’t know that positions per aircraft was more important than actual message rate per second. I was only looking at the message rate per second and thought that the attic had outperformed the rooftop by a hair. Oh well, maybe I will mount to the roof after all. Thanks for the info!
I’m also very impressed with the eight element coaxial Collinear homemade antenna. It really brought my numbers through the roof. I would encourage anybody looking for an increase in antenna performance to build one themselves .
I have built a 1/4 wave ground plane for my airband scanner, but ended up using a yagi because I needed a more directional antenna. I’ll definitely pull out the old 1/4 wave and trim it down to 1090mhz. I’ll give it a shot.
And btw, i’m not declaring anything "the winner. " I’m just trying to get the best performance out of the coco that it possible.