Building a new receiver, this is going in a prime location - Suggestions for receiver/preamp/filter please

I totally agree. A big problem with the Uputronics LNA is the susceptibility to strong, nearby signals. 5W on 145MHz from our co-sited SSTV repeater would cause complete overload, dropping ADS-B signals down to zero within a second or so.

The RTL-SDR-LNA doesn’t suffer from this - As can immediately be seen from the graphs.