I made an update to my setup.
My setup used to have the FA antenna on the roof, some 10-ish meters of Koka coax cable under the rooftiles to a window where a short piece of flax coax went inside where the FA dongle and Raspberry Pi was.
I used that setup for some years.
Then I wanted to improve things by installing a RTL-SDR LNA. Did that but my receptiong went down to zero. I didn’t want to lose my streak (currently at 1580 days) so I placed everything inside for the time being. That should have been for some days but that was my setup for the last 6 months…
Anyway; last week I went up the roof. Installated the antenne up there again along with the LNA.
Drilled a small hole in the roof so the 2 meter SMA cable could go inside.
Inside is the rest of the hardware (bias tee, FA antenna and RPi).
Installed some power outlets along the way.
On the roof:
FlightAware antenne with LNA by Iemand91, on Flickr
In the attic:
Raspberry 3 with ADS-B by Iemand91, on Flickr
Some stats, I think you can see when I changed the setup 
graphs1090 by Iemand91, on Flickr
Some comparison screenshots:
Tar1090 before:
Tar1090 1 by Iemand91, on Flickr
Tar1090 after:
Tar1090 2 by Iemand91, on Flickr
Planefinder before:
Planefinder 1 by Iemand91, on Flickr
Planefinder after:
Planefinder 2 by Iemand91, on Flickr
Radarbox before:
Radarbox 1 by Iemand91, on Flickr
Radarbox after:
Radarbox 2 by Iemand91, on Flickr
24 hours tracks before:
Tar1090 24 hour tracks 1 by Iemand91, on Flickr
24 hours tracks, after:
Tar1090 24 hour tracks 2 by Iemand91, on Flickr