Hi @LawrenceHill @AndyBailey
Just thought I would just get back to you guys after a few days data collection about the impact of the new firmware update on the Airspy mini.
Basically: it has certainly not done any harm and at the very least I feel more comfortable being on the latest build even though the phase noise improvements are only applicable to the R0/R2.
I have my reference site (non-Airspy) which always does better on number of aircraft but conversely the Airspy always does better on number of positions.
The only metric I can demonstrate a difference post-update is to conclude that the Airspy is getting closer to my reference site in terms of aircraft reported.
Any improvement is very minor but the two sites are now quite close on the UK ADS-B statistics page.
(Airspy is the bottom one highlighted and as you can see does better than top one on positions, but it’s a tiny difference in practice)
As the traffic starts to increase over the coming weeks it will be interesting to see if the gap changes. However I am keen to try out a filter in front of the Airspy and play with the gain on that one a little more, so it will invalidate the current comparison test I am running.