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#1

AirNav Radar Discussion / Re: HOW TO ACTIVATE THE MLAT F...

Last post by Runway 31 - October 30, 2026, 11:08:00 PM

MLAT is enabled when you add your exact lat/lon and altitude on the grid of your map

I have very little Linux knowledge but note that your mlat on the ini file is different from the one shown by the reply previous to yours, it reads

[mlat]
#autostart_mlat=true
#mlat_cmd=/usr/bin/mlat-client
enable=true

Try changing yours to that

Hopefully abcd will note the conversation and help out

Alan

#2

AirNav Radar Discussion / Re: HOW TO ACTIVATE THE MLAT F...

Last post by didou - October 30, 2026, 08:52:58 PM

Hello Alan,

Following the AirNav support link (Trixie guide by abcd567), here is what I checked on my Raspberry Pi 4, Raspberry Pi OS Trixie, rbfeeder 1.0.17, network_mode=false:

- python3 3.13.5; "import asyncore" works (python3-pyasyncore 1.0.2-3 installed).
- mlat-client 0.2.13+trixie1 is installed from the repository (not compiled by me); no package on hold.
- /usr/bin/mlat-client --help runs normally.
- No error related to mlat, asyncore or Traceback in journalctl -u rbfeeder, and nothing about mlat in /var/log/rbfeeder.log.
- The only error at service start was ExecStartPre setfacl status=203/EXEC (acl was not installed). I installed acl: now status=0/SUCCESS. No change for MLAT.
- I tried [mlat] with autostart_mlat=true and mlat_cmd=/usr/bin/python3 /usr/bin/mlat-client; then both commented out; then enable=true. After each rbfeeder restart (waited 5 minutes), "ps aux" shows only dump1090-rb (started with --mlat --forward-mlat --gnss). No mlat-client process is ever started.
- Position (lat, lon, alt=353) is set in rbfeeder.ini and on the website. Station serial EXTRPI736563.

Questions: is MLAT perhaps not enabled for my station on the server side? Which exact condition makes rbfeeder start mlat-client? Is there a debug option to make rbfeeder log why it does not start it?

Thank you for your help,didou

#3

AirNav Radar Discussion / Re: Database Update Requests

Last post by Michel - October 30, 2026, 07:20:43 PM

Alan,

BAW700V EGLL-LOWW
BOX617 KLAX-EDDF
CFG3537 GCTS-EDDH
EWG9336 EDDL-EGBB
HOP93ET LFPG-ESGG
MPH9432 VHHH-UBBB-EHAM
SAS4304 LEMD-EKCH
SAS576 LFPG-ESSA
SXS4DU LTAC-EHAM
THY8VE EHAM-LTFM
VLG13RT EHAM-LEBL

Michel

#4

AirNav Radar Discussion / Re: Database Update Requests

Last post by Runway 31 - October 30, 2026, 02:44:04 PM

Thanks Carlos

Alan

#5

AirNav Radar Discussion / Re: Database Update Requests

Last post by Runway 31 - October 30, 2026, 12:29:06 PM

Thanks John, added in

Alan

#6

AirNav Radar Discussion / Re: Database Update Requests

Last post by jdsd - October 30, 2026, 05:21:02 AM

Hi Alan

Please add

G-DHME  B77L  40835A  DHL Air  c/n  29740

Thanks
John

#7

AirNav Radar Discussion / Re: Database Update Requests

Last post by CarlosAbreu - October 30, 2026, 01:25:49 AM

Alan

29-10-2026 Updated file in attach.

Carlos

#8

AirNav Radar Discussion / Re: HOW TO ACTIVATE THE MLAT F...

Last post by didou - October 29, 2026, 08:06:41 PM

Hello Alan,

Here is my rbfeeder.ini (key, latitude and longitude redacted):

Code Select Expand

[client]
lat=MASQUE
lon=MASQUE
alt=353
network_mode=false
log_file=/var/log/rbfeeder.log
key=MASQUE
sn=EXTRPI736563

[network]
mode=beast
external_port=30005
external_host=127.0.0.1

[mlat]
autostart_mlat=true
mlat_cmd=/usr/bin/python3 /usr/bin/mlat-client

[dump978]
#dump978_enabled=true

Thank you for your help.

#9

AirNav Radar Discussion / Re: HOW TO ACTIVATE THE MLAT F...

Last post by Runway 31 - October 29, 2026, 07:50:55 PM

Please post your ini file with your credential key redacted

Alan

#10

AirNav Radar Discussion / Re: HOW TO ACTIVATE THE MLAT F...

Last post by didou - October 29, 2026, 05:10:24 PM

Hello,

I have the same symptom as described above and would appreciate help.

Setup: Raspberry Pi 4, Debian 13 (trixie) arm64, rbfeeder 1.0.17, RTL-SDR run directly by rbfeeder (dump1090-rb). Station serial EXTRPI736563. Exact position and height are set on the website and in rbfeeder.ini.

What I did: installed mlat-client (apt-get install mlat-client), restarted rbfeeder several times, rebooted.

What I checked:
- /usr/bin/mlat-client --help runs normally, so the package works on trixie.
- rbfeeder.ini has no stray lines (no "Ini, TOML", no mlat_connector). The [mlat] section contains autostart_mlat=true and mlat_cmd=/usr/bin/python3 /usr/bin/mlat-client. network_mode=false, [network] mode=beast.
- dump1090-rb is started with --mlat --forward-mlat.
- systemctl status rbfeeder, CGroup: only /usr/bin/rbfeeder and /usr/bin/dump1090-rb. No mlat-client process is ever started.
- grep -i mlat /var/log/rbfeeder.log returns nothing at all.

The feeder itself works well (packets sent every minute, data accepted).

Questions:
1. Does MLAT have to be enabled on the server side for my station?
2. Should [mlat] contain enable=true, as in the example above, instead of autostart_mlat / mlat_cmd?
3. Is there any condition (minimum number of aircraft, position accuracy, region) before rbfeeder starts mlat-client?

Thank you,