MLAT feeding issue

Technical Support
1

Hi

I have a problem to feed adsbexchange MLAT.

When using sudo bash -x /tmp/axupdate.sh I get this weird message : No data available from IP 127.0.0.1 on port 30005!
But I use dump1090-mutability and there are MLAT data.

adsbexchange client is up to date, no other MLAT client on the machine…
of course on the ADSBexchange Anywhere page I got the “No Feed” in red.

any idea to solve this ?

I had to modify log domain name because of the two links rule for new user…
May 23 11:56:00 raspberrypi adsbexchange-mlat[18178]: Connected to multilateration server at feed1:31090, handshaking
May 23 11:56:35 raspberrypi adsbexchange-mlat[18178]: Lost connection to feed1:31090
May 23 11:56:35 raspberrypi adsbexchange-mlat[18178]: Reconnecting in 3.6 seconds
May 23 11:56:39 raspberrypi adsbexchange-mlat[18178]: Connected to multilateration server at feed2:64590, handshaking
May 23 11:56:44 raspberrypi adsbexchange-mlat[18178]: Lost connection to feed2:64590
May 23 11:56:44 raspberrypi adsbexchange-mlat[18178]: Reconnecting in 4.7 seconds
May 23 11:56:49 raspberrypi adsbexchange-mlat[18178]: Connected to multilateration server at feed1:31090, handshaking
May 23 11:56:54 raspberrypi adsbexchange-mlat[18178]: Lost connection to feed1:31090
May 23 11:56:54 raspberrypi adsbexchange-mlat[18178]: Reconnecting in 5.2 seconds
May 23 11:57:00 raspberrypi adsbexchange-mlat[18178]: Connected to multilateration server at feed2:64590, handshaking
Disconnecting from feed1.31090: No data (not even keepalives) received for 60 seconds

2

Why are you using dump1090-mutability? I believe it does not listen on port 30005 by default, and it’s generally obsolete. Supported methods for feeding ADSBx are documented at Ways To Join The Exchange - ADS-B Exchange. If you’re installing your own decoder, I’d recommend Automatic installation for readsb · wiedehopf/adsb-scripts Wiki · GitHub

3

thanks for your response.
I use this installation GitHub - jprochazka/adsb-receiver: Create your own ADS-B receiver. for ages on a old Raspberry 3 with no update for a while.
I hope the great script you give could upgrade my installation.
Backup first, MLAT later :wink:

do you know if it is possible to join wiedehopf for this question ?

4

wiedehopf is not active in these forums, if that’s what you mean. If you have issues with his scripts (they usually “just work”), you could open a github issue.

5

I use the scripts and indeed it is ok and my config is up-to-date with readsb tar1090 and graph1090 but…still the same MLAT problem, no feed.

Do you know a doc to solve this issue ?

6

just have to wait a bit after installation, MLAT is OK now !
thanks for the link to the script !