Add inline filter / splitter with HabAmp?

Hi all,

Added a HabAmp over the weekend - with gain set to AGC, looks like theres a lot of noise…

https://docs.google.com/drawings/d/1ZUjty_PBCLzItdusgXZv5fhl4unsffQAnNDmHtb9nj8/pub?w=960&h=720

While I plan to reduce gain to around 45, what do we think to adding a splitter/filter upstream of the habAmp, to filter even more?

Did you switch anything else from March 18 to end of graphs? If not you should find the best fixed gain value. For me a good rating is the message rate. I look on the http output from dump1090 and watch the message rate while switching gain up and down.