Huge increase on "bad" messages > -3dBFS after gain adjustment from 49.6 to max

[wiedehopf]

@nimzok

What are the reds then?

They are stronger than -3 dBFS
so -40 is a very weak signal, -1 is a very strong signal.

Maybe just read the first 2 posts of this thread:
(or the whole thread )

Thoughts on optimizing gain

The topic of gain comes up often enough and unlike some i don’t like the gain optimization script. Aircraft fading in and out of view make short term number gathering not that useful. The metric i like most for optimizing gain is the percentage of what dump1090 calls “strong_signals”. Those “strong_signals” are messages that get close to getting clipped. If you don’t care about some background you can scroll down to the next post for the HOWTO This is a clipped signal, the wa…

To really understand what is going on, you need quite a bit of physics background.
Well at least it helps understand the units

dBFS for example is something you can google.