Hello, I have downloaded and installed the latest version of ASDBx per the appropriate web page instructions. All appears to be functioning correctly. However, this is my first time trying to get and display MLAT data. My question is how do I know I am getting MLAT data? So far, I have: 1. On the dump1090 page, observed green hi-lighted planes and two types of gray hi-lighted planes. One with speed, distance and track and one only with squawk and altitude. 2. grafana and prometheus pages come up ok. 3. On my firewall enable 30002 through 30104 and forwarded to my RPi. 4. Sniffed data via IPTABLES: (to show packets to and from feed. adsbexchange. com.) 5. Checked on main web page and MLAT Sync Matrix shows my site, but no red or green numbers. Also on Coverage Graphics my site shows up. (after configuring private = no) So after this long description, am I overlooking something or doing something wrong? How do I verify MLAT is working? 6. Also, I am not able to find further documentation on all the lines of file /boot /adsb-config.txt. I would like to know more details on what the variables enable and disable. Thanks in advance. luke...
ssh into pi (user: pi - password: adsb123 - port 3226) then type the command: Code: cat /var/log/daemon.log | grep Receiver you will get a long list of lines showing activity of your mlat-client. Code: Receiver status: connected Receiver: 677.9 msg/s received 130.5 msg/s processed (19%) If you find lines with status "connected" and rate of msg/s received, then everything is working as expected.
This is absolutely not necessary. It means that your feeder is not synced with any other feeder. Anyway if you can see your traffic on global map then you are feeding but your feeder is not used for MLAT calculations. I don't know your location but today morning I've seen one feeder in Western Europe region with probably wrong configured location (Ireland, "feeder_name_here_xxxxxx"). Maybe it was your feeder?
Thanks for the replies. Yes, I am seeing connected and received messages in my daemon.log file. Should the MLAT planes a different color on the dump1090 status page? My location is North Carolina, USA.
dump1090 will not display any MLAT plane on map if his position can't be calculated. Multilateration needs at least 3 (or 4, I don't remember) stations in order to extrapolate plane's position, maybe your neighbours are too far or they are not active at moment.
in the dump1090 map ... on the ADSBx custom image MLAT will be blue-ish, ADS-b green-ish, and no position grey - this is in the list on the side.
I am questioning the same thing... very new to feeding overall, I have my feed up and sending data on a custom port. When using the above command I get no return... I am using the custom adsbx image.. Am I missing something? Appears I cannot paste things from the putty log directly nor can i upload the logfile, sees both as spam like activity..
You had data on the custom port you requested -- I just havent tagged them in the menu yet -- real PITA text editing Do you see you feeder name in sync matrix?
You'll need other feeders to sync with that are running mlat-clients to get mlat. Some places are sparse with overlapping coverage. But keep feeding and adding feeders --- every one helps!
When I was feeding flightaware from the same pi, I was getting mlat syncing with over 100 other units, hence questioning..
http://www.adsbexchange.com/coverage-2/ etc! You are in texas? I see you feeder on the ZeroTier network if so ....
Yeah it wasn't connected to the mlat server ... it might have been the space in the name ... I updated it and let's see what happens .... VIVA LE SECURE NETWORK
There are a bunch of feeder in and around Austin .. so this should be easy to get MLAT. It doesn't seem to have much range tho .. are you close to a window ? 1090 mhz is line of sight ...
Working now! I need to put this on a bug list .... mlat-client does not like spaces in feeder names .... blah Check it out ... MLAT!
PCB is good, well the one I bought from china was https://www.aliexpress.com/item/ADS-B-1090Mhz-6DB-SMA-PCB-Antenna/32842769264.html ... what SDR? You are getting 30 miles at least ... so that's good for indoors ... FlightAware Pro Stick+ with filter and amp is best bang for the buck at $19 -- everything I test it beats them all You really only need a filter if there is a lot of RF interference around you ... cell towers, radio stations, urban area
For now the smart nesdr, planning on the v3 upgrade, next round. As for the filter figured it couldn't hurt, there is a bias-t powered LNA that has my attention along with getting the antenna into the attic or possibly outdoors.
