Distance from Receiver


I have a very simple indoor setup, most of my signals are within 50 miles, some 50-100, seldom any at 100-150

Today I noticed ONE signal at +250 miles

What causes this anomaly?


Sometimes, I get MLAT positions which are a lot farther distant than my ADS-B positions.

Do you recall what the data source of your 250 mile position was?

atmospheric ducting.

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Not sure how you can tell what the data source is. Just shows on the outside of the Pie Chart display.

Just says 1 position seen.


When you click on the target aircraft, a box will open with various parameters.

One of them will be “Source”. Usually ADS-B or MLAT (if you have MLAT enabled)

There isn’t a way to find out if you’re just looking at your ADS-B page on the FA page. If you saw it live on your device, then you could click on it. This is a mod I’m working on. Storing the information about the planes from further out and showing it on my device HTML file (i.e. record distances, etc.)