Send MLAT results to local VRS

Discussion in 'Feeding' started by superg3, Oct 24, 2017.

  1. superg3

    superg3 Member

    Hi all,

    I'm trying to get my receiver adsbexchange mlat results to feed my local VRS but I'm not able to do it.
    For PiAware I created a receiver in VRS that connects to 30106 port in the RPi3B and listen the Basestation format results sent by FA.

    Could anybody help me?

    Cheers
     
  2. MDA

    MDA Administrator Staff Member

  3. superg3

    superg3 Member

    Hi MDA, that is not so clear for me.

    As I understand, piaware feeder connects to antenna data from mutability in the port 30005, sends data to Flightaware and receive mlat results in port 30104. At the same time it broadcast mlat results in ports 30105 and 30106 (beast and ext basestation formats). In fact I'm colecting in VRS my receiver piaware mlat results from port 30106

    In the other side if we check adsbexchange-mlat_maint.sh file we can see that AdsbExchange feeder connects to antenna data from mutability in the port 30005 too, sends data to adsbexchange and receive mlat results in the same port as piaware, 30104. It is a noob question, but I don't no if receve mlat results in the same format and port from two different sources could be a problem.
    Adsbexchange feeder does not have a mlat result broadcast port, and if I add at the end of the file a command like --results beast,listen,30102 VRS does not able to connect.

    Also at this momment adsbexchange MLAT in Spain and center-south France seems to be down. No stations connected in the sync matrix.

    Cheers
     
  4. MDA

    MDA Administrator Staff Member

    Hi Marcos
    I didn't test it but it make a sense. If you choose 2 different ports then you can split MLAT data into separate feeds (check firewall settings, port can be blocked). Try to create new receiver in VRS using MLAT results from adsbexchange. In fact in your location there is not enough feeders to create MLAT data. So probably you'll not get any results back.
    BR
    Marcin
     
    Last edited: Oct 24, 2017
  5. superg3

    superg3 Member

    Hi Marcin,

    No firewall blocking.
    I have a receiver created in VRS to link with adsbexchange MLAT port, but the adsbexchange port (30104) is a input port where it receies MLAT results. I/We need a MLAT results output port.
    As you well know Balbino and Sidonia are 24/7 runing stations like mine. When MLAT is running in Spain I saw we synced several times.
     
  6. MDA

    MDA Administrator Staff Member

    Hi Marcos
    Try to contact Joe Prochazka (author of this client) on GitHub. He can answer all the questions.
    Marcin
     
    superg3 likes this.
  7. superg3

    superg3 Member

    willco

    Thanks!
     
  8. MDA

    MDA Administrator Staff Member

    Hi
    If you solved this problem please share it. I think many people are interested too.
    Marcin
     
  9. superg3

    superg3 Member

    Hi,
    I'm still trying to solve it. But it is not only a mlat-client issue, there is a mlat-server side problem.
     
  10. abcd4567

    abcd4567 New Member

    Got it working last night, but it was a bit convoluted and I ended up making trial and error changes to the mlat-client file before it ran correctly.

    I tried to post a detailed message on how I did it, but the server refused to accept it saying it looked like spam...
     
  11. MDA

    MDA Administrator Staff Member

    Hi abcd4567
    New users have very limited rights :(.
    Please post details directly to me, I'll re-publish. I know that you're expert :).
     
  12. abcd4567

    abcd4567 New Member

    edit the script adsbexchange-mlat_maint.sh and change the end of this command ( --results beast,connect,localhost:30104)
    to this:
    --results basestation,listen,31003

    Then add a receiver in VRS using port 31003 and basestation format.

    Of course, reboot your Pi after making the change :)

    Good luck!
     
    Last edited: Nov 1, 2017
    MDA likes this.
  13. MDA

    MDA Administrator Staff Member

    Thanks! It works.
    :)
     
  14. abcd4567

    abcd4567 New Member

    You're welcome :)

    It took me a while to figure that out, and went through a bunch of convoluted stuff, but that was the "down and dirty" change that was needed.
     
  15. MDA

    MDA Administrator Staff Member

    Great that you're back to this forum :)
     
  16. abcd4567

    abcd4567 New Member

    In case there is some confusion, I am not the same guy as abcd1234 who posts a lot of good stuff about ADS-B and antennas on other forums. I selected a user name close to his, but it was not intentional. Thanks.
     
  17. MDA

    MDA Administrator Staff Member

    I think you're abcd567 from GTA (Missisgua) :). I think I'm not mistaken.
     
  18. abcd4567

    abcd4567 New Member

    Hmmm... maybe I should change my user id. I'm in Texas :)
     
  19. MDA

    MDA Administrator Staff Member

    Doesn't matter. Even if you're another abcd... Your posts are helpfull. :). Best regards from Poland to Texas.
     
  20. abcd4567

    abcd4567 New Member

    Cool, best regards! Must be getting cold this time of year.