Dpd in the USA sells a 9dbi antenna...
I'm aware of that, and it could be an upgrade option in the future.
At the moment, I'm using my Scan King antenna in the loft with 10 metres of RG213 and getting good reception considering.
My plan is to compare various setups (RG213 + RADAR-100 / Westflex + Scan King / Westflex + RADAR-100) before I stick something up on the chimney.
Here's a screenshot of what I'm achieving now with my current set up
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