I have following setup for receiving Flarm signals (868.3MHz):
Antenna -> amplifier -> 10m coax cable -> dongle from rtl-sdr.com with bias tee -> Raspberry

Now I want to build a SAW filter between the coax cable and the dongle. So I need a DC bypass for the SAW filter. Does anyone know how to build a circuit with a SAW filter and a DC bypass?

Viele Gre