Hello. I am somewhat new to this but with the help of CivMil on twitter and some random bits of info from forums I have gotten a merged feed in Virtual Radar Server to show MLAT, which was my primary interest. I wanted to get as much on the map, as a visual, as possible. I have had some more than usual showing up with GPS but several just remain without GPS, even though the FA site says I am synchronised with over 400 other feeders. How is it possible I am seeing multiple long-term flights without GPS every time I keep checking every couple minutes?
Is there something I am doing incorrectly? The status of my feeder on the FA site clearly says MLAT is working and synchronised. My location and elevation are all bang on. There are the odd “MLAT” showing up on VRS even though some are ADSB and a couple were Mode-S. But my assumption would be that with 400+ feeders synced up, that there would be hardly any nearby flights that would remian GPSless.
If anyone could shed some light on this I would appreciate it.