Large reduction of data received when using filter

[LawrenceHill]

@jimMerk2

The insertion loss of the filter at 1090 MHz should be around 1 dB, however I wasn’t able to find the spec for this at FlightAware store.

Here are some plots I posted a few years ago.

Which one is the best antenna?

The narrower, Dark blue filter I presume That looks pretty close to what I measured. [FlightAware ADSB Filter Dark Blue - 840-1340MHz] Here is a comparison between the light and dark blue filters. [FlightAware ADSB Filters Light and Dark Blue - 840-1340MHz]