Install ADS-B in cavity pre-filter

Mounting plate for pre-filter previously prepared, accessible through the service port in the rear fuselage floor

The cable to the ELT antenna has a BNC cable. So a BNC-SMA adapter is needed for the input side of the prefilter.

A RG400 BNC to SMA cable had to be made to connect the output side of the prefilter to the ADS-B in receiver

Prefilter installation complete. The prefilter is attached with stainless steel bolts into threaded holes. Low strength (purple) Loctite was used on all bolts.