# Error on MLAT

**URL:** <https://discussions.flightaware.com/t/error-on-mlat/17462>\
**Category:** ADS-B Flight Tracking\
**Created:** [October 17, 2015, 4:16pm UTC](https://discussions.flightaware.com/t/error-on-mlat/17462 "2015-10-17T16:16:03Z")\
**Posts on this page:** 1\
**Showing post:** 8

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**Author:** ![dschaper](https://sea1.discourse-cdn.com/flex019/user_avatar/discussions.flightaware.com/dschaper/32/59633_2.png) [@dschaper](https://discussions.flightaware.com/u/dschaper)\
**Post date:** [October 17, 2015, 9:44pm UTC](https://discussions.flightaware.com/t/error-on-mlat/17462/8 "2015-10-17T21:44:10Z")

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> [@Foxinthehouse1](#):
>
> > [@dschaper](#):
> >
> > Which version of dump1090? (mutability, flightaware?)
> > 
> > And what is the output of
> > 
> > ```auto
> > 
> > sudo piaware-config -show
> > 
> > ```
> 
> I’ll have to get that tonight. However I rebooted the Piaware about three hours ago via the internet interface on Flightaware and no longer getting errors on that log. I have to verify at home with port changes if it is forwarding malt to VRS or not.
> 
> Dump1090 is Flightaware 1.2-3 and piaware is 2.1-3
> 
> Config -show displays this,  
> Mlat 1  
> mlatResults 1  
> mlatResultsFormat {beast,connect,localhost:30104 basestation,listen,310003}

If your local VRS is set to port 310003 (I think you may have one too many 0’s) for MLAT then I think you should be set. If you wanted to try the Co-Op VRS in addition to local VRS, the command would be

```auto

sudo piaware-config -mlatResultsFormat "beast,connect,localhost:30104 beast,connect,feed.adsbexchange.com:30005 basestation,listen,310003"
sudo piaware-config -restart

```

If MLAT isn’t working with local VRS, try mgunther’s excellent tutorial: [http://discussions.flightaware.com/ads-b-flight-tracking-f21/vrs-show-both-dump1090-adsb-and-fa-mlat-positions-t36086.html](https://discussions.flightaware.com/t/vrs-show-both-dump1090-adsb-and-fa-mlat-positions/17399)

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