Further to my previous communication about my virtual radar set I now have been investigating what can be done. I’m waiting for a Raspberry Pi and then I will be able to move the aerial unit higher in the house.
In the mean time, here is a “splat” of what I can “see” using the original aerial and no RPi.
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Here’s a version zoomed in a little. I’m thinking of taking the unit to the Lake District soon!

The different colours represent aircraft at different altitudes. The higher the plane the further away it can be seen.