My ADS-B setup was working very well for about a year, until it just stopped picking up aircraft signals. The setup was a JetVision A3 antenna mounted quite high on the side of my house with a good line of sight, 15 m coax cable and the FA Pro Stick Plus. Since this happened, I’ve tried lots of different things to try and fix the problem, but none have worked.
At first, I suspected water damage to the coax cable. However, even after it replaced, the problem remained. The old cable showed no signs of damage. I have since added in a FA dark blue external filter to my set up, but this has also made no difference. I normally use rtl1090 but I have tried other software. I’ve also tried another computer. Neither have made any difference.
After trying all this, I wasn’t sure what else I could do and left it for about a year. Recently, I’ve come back to see if I can figure out what’s going on. I’ve done some experimenting to ensure there is actually a connection with the antenna. I removed the dark blue filter and FA Pro Stick Plus from my set up and replaced it with a standard NooElec RTL-SDR dongle. I was able to receive radio signals just fine with the same antenna and coax so there is definitely a physical connection present.
Previously, I had no issues receiving data from aircraft 250+ km away. Every now and then I’d pick up aircraft as far as 400 km away. Now, the best I get is a couple of packets of data received in rtl1090 by very close aircraft, but nothing much at all. Even aircraft that fly directly overhead are usually not picked up.
The strange thing is that during that year I left it all, I would still come back every now and then and see if it worked. The majority of the time, it didn’t, but sometimes, seemingly at random, it worked pretty much perfectly. I cannot see any pattern that matches all of the times it worked. I live in a rural area, but this is making me think it’s some kind of interference issue, but I’m not really sure what could be causing it. I have run multiple scans which I’ve attached here:
I cannot figure out what is going on with my situation, so any help would be greatly appreciated.