MLAT red

FlightAware ADS-B Flight Tracking
1

Hi my Pi2 has been stable but recently the MLAT button has been red intermittently and I have zero MLAT stats for the past 2 days.

MLAT is enabled.

Any thoughts please?

2

Mouse over the red MLAT text; does it display any clues explaining what the issue is?

3

Hi it says disabled/not sync’d/lat long not set.

How do I sync?

4

You can’t synchronize yourself.
It also says /lat long not set.
If you set location correctly, FA server will synchronize automatically.

For Beginners - How-to Set Receiver Location

 

 

5

I am getting this log

mlat-client(3900): Server status: clock unstable

6

@VK2GEL

Seems hardware issue at your end. Most likely Power Supply Unit. See these posts

Also see this thread:

Mlat-client clock unstable (only sometimes)

 

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7

The RPi uses a clock sync once a day (at least mine is doing it) maybe this is currently not working on yours

8

Your stats show you had MLAT working in the past.

Did you modify the location?
An imprecise location is the most common cause for “unstable clock”.

9

From the statistics page;
Location Set: 22 January 2019 12:17

There are a few sites local to VK2GEL that report MLAT flights but don’t show MLAT as synchronised.
Strange.

10

Thanks all for your help. Rebooted and MLAT has been working for 2 days now. Will let you know if it stops again. G

1 Like