you are correct, ADSB Transmitters are in the belly usually. Because they are always above the receivers. Eccentric, your issue is also due to very sparse coverage in your area. There are at least 50 other receivers around me within a 100 mile radius alone, that data all gets aggregated. aggregation is turning several sources of information into a single one. But as far as my personal receiver, ive logged into it on my private server and ive seen targets as low as 2-4000 AGL Showing up 10-20 miles out from me. Terrain is also a key aspect. Since im sitting at a higher elevation that the skies southern of me, i also get more detection from lower aircraft. Line of Sight is very critical.
looking at the feeder map I see out in western KS there's hardly any feeders and in many states where its more remote or mountainy there's hardly any feeders. I bet the coverage sucks in those areas. I can't wait to get a feeder going but too many irons in the fire right now. only so much money and I'm on disability because of my autism and my side jobs help but don't give me enough to get everything i want. you probably seen this map but here's the link. I wish there was a way to see feeder coverage on the map. https://map.adsbexchange.com/mlat-map/
yes ive seen that map, because im on it, and ive used it in a few places to teach others about ADSB And how it works.
I figured you had. i wanted to see a map to see where the feeders was and if there was any in my area but after several months of looking off and on I finally found it. it's kind of buried. Not exactly easy to find and not in the FAQ's. I figure they make it hard to find because of privacy issues. btw are you into radio scanning or ham radio? I just wonder how many people doing feeders for here and Flight Aware etc are hams or radio scanner hobbyists. I'm a ham and radio scanner hobbyist. KC0LDT is my call.
Apparently, the Dutch bought F-35... https://globe.adsbexchange.com/?ica...181&zoom=9.8&showTrace=2022-03-30&trackLabels