Hi all
I saw mlat wasnt connecting ( red) box stated location reset same problem
Fresh install latest raspberry full os
piaware 8.2
readsb
airspy_adsb
lowered cpu ussage well within range
double checked all settings
set dump1090-fa to OFF
not sure if dump went in before readsb or not
any ideas please
[2023-07-11 15:35 BST] mlat-client(9700): Receiver: 1888.1 msg/s received 295.4 msg/s processed (16%)
[2023-07-11 15:35 BST] mlat-client(9700): Server status: clock unstable
Set an accurate lat/lon location.
Well after triple checking again its same red mlat
The unstable clock is an indication of a power fluctulation. Are you using the RPi 5.1volt power supply or a generic 5.0 volt unit? Try another power supply.
Hi
it all started going red beofre i did fresh install
checked both psu 5.1v 3ah
swapped psu now rebooting them will report bk in few minutes
Nope still same checked other pi4 15 mlat all working well
hmmm
Might be a coincidance but as readsb sent msg to FA red box appeared
i could uninstall dump readsb and airspy adsb and
reinstall them again
??
Clock unstable indicates a timing issue and that’s the cause of MLAT being red.
Did you check the time on the pi?
Timedatectl is the command. Is it in the correct timezone and on time ? Is it syncing to a internet timesource like pool.ntp.org ? Raspberry Pi’s don’t have a real-time clock (RTC) so they can deviate from time ( not often but it happens).
yes correct time ive just wiped ssd reinstallint it without readsb
Flightaware MLAT, with STD rtl-sdr dongles, uses the clock in the dongle itself (Radarcapes, Airsquitters and some mode S beasts have GNSS/GPS time stamps). System time is not used by Flightaware.
A busy USB bus can cause timing issues. Check to see if the dongle shares the USB bus with other devices. I had issues when I tried to share the single four port plug bus on an RPI4 with an airspy(Ads-b/1090Mhz) and an rtl-sdr (uat/978Mhz). lsusb -t should show the tree
Ahh
ssd wiped
thanks for reply
john
At last i kept going and all sorted
thankyou all
I have the same problem of no MLAT due to clock unstable. How do I set an accurate lat/lon location. The configuration (gear on right of site bar) only shows accuracy as exact, 1 km or 10 km and using device GPS location. Coordinates appear as (-25.46283, -49.22908) in the site description. Problem is recurrent since an automatic software upgrade about 1-1.5 year ago. Sometimes a shutdown and power on works to correct it but not always.
According to the displayed lat & lon you are located near Curitiba, Brazil. If that is not correct, click Edit Location in you user control panel. It is just below the coordinates shown.
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