Do I Need A Filter?

[abcd567]

@nimzok

I ran the filter check test before and after the filter installation (results attached). The only difference appears to be a cutout around 800 MHz, however the GSM part remains as strong as it used to be before filter attachment. Any ideas?

You need the dark-blue (1090 Mhz only) filter

The Ultimate Raspberry Pi & Maker Store

Announcing the new 1090 MHz only bandpass filter!