Hello. I have been experiencing ongoing problems with my site. I have the blue USB device. My site show an error with MLAT. The note says “MLAT disabled/not synchronized/Latitude Longtitude Not Set”. When I go into device settings it shows “Manually enter location” under Receiver Location. But I cannot interact with the box. When I look at the MLAT section it says MLAT is enabled and my location is correctly displayed. There is however a message saying “This feeder has been inactive for an extended period of time.” And offering the option to delete the feeder from my account.
When I look at the log I see lots of “30005, not starting multilateration client yet
I have regularly did the upgrade and restart but it doesnt fox the issue. Currently my feeder type is PiAware (Debian Package Add-on) 8.2
Site Information shows PiAware working and connected to FlightAware.
I also seem to see days in a row where the device has detected no aircraft. I also received emails that my device isnt reporting. But when I look at my webpage I see PiAware working and FlightAware connected.
Also when I click the View Live data link it shows me a map of Portugal. I live in east coast Australia.
Anyone have an idea what is wrong?
The dump1090-fa is NOT working.
Please post output of following commands:
sudo systemctl status dump1090-fa
sudo journalctl -u dump1090-fa -n 20
pi@raspberrypi:~ $ sudo systemctl status dump1090-faPiAware - ADS-B and MLAT Receiver - FlightAware PiAware - ADS-B and MLAT Receiver - FlightAware
sudo journalctl -u dump1090-fa -n 20#0: Generic RTL2832U (Realtek, RTL2832U, SN 0000100#0: Generic RTL2832U (Realtek, RTL2832U, SN 0000100
The dump1090-fa is repeatedly trying to start, but fails. Most likely dongle issue.
Let us check the dongle. Please issue following commands, and post output of last command below
sudo apt install rtl-sdr
sudo systemctl stop piaware dump1090-fa
rtl_test -t
That means some other software is using the SDR.
pgrep -fa readsb
pgrep -fa dump
pgrep -fa rtl
pi@raspberrypi:~ $ pgrep -fa readsb
pi@raspberrypi:~ $ rtl_test -t
Using device 0: Generic RTL2832U
darrenyorston:
$ rtl_test -t
Using device 0: Generic RTL2832U
Please issue following commands to stop piaware and dump1090-fa, then run the test.
Post result of last comnand
sudo systemctl stop piaware dump1090-fa
rtl_test -t
obj
April 4, 2023, 3:25am
10
You appear to be trying to run both a 1090 and a 978 receiver. You need two dongles, individually serialized, and appropriate configuration for this to work correctly.
In your case where you have only one dongle, dump1090 and dump978 are fighting over access to the hardware.
ok. what do i do about it? I just have the one dongle (the blue one) plugged into my Raspberry pi.
Quick and dirty approach. Try:
sudo systemctl stop dump978-fa
Then restart.
UAT / 978 isn’t used in Australia, so no need for it here.
2 Likes
thankyou very much. ill see how it goes.
MLAT is not going to work if you live in Australia and the location detail shows you in Portugal. You could use Google Earth to get your correct Latitude and Longitude to correct that in the system.
Is it correct to assume your piaware-config file contains the following text?
allow-mlat yes
system
April 3, 2024, 3:17pm
16
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