Positionless reports....

I seem to have quite a high proportion of these throughout my daily feed. I am pretty sure these are not errors as such as we can only decode what is transmitted. I see a lot of other feeders with a much lower ratio than mine.

Which leads me to ask if there is anything that can be done to reduce them. I am using an SBS-3 feeding PF, ADS-B hub, MLAT Radar and VRS, all happily playing nice together.

Or is it something I do not need to worry about, maybe something to do with MLAT calculations perhaps?

Jeremy in SE18