I was inspired by @BosmangBeratna so threw together a quick #raspi project this afternoon. (I'd accumulated the parts ages ago but hadn't done the build yet.)

- 1x Raspberry Pi 2
- 1x USB GPS receiver
- 2x RTL-SDR dongles
- 1x 1080 MHz antenna
- 1x SMF splitter

Put it all together based on https://flightaware.com/adsb/piaware/install, and now I can do this:

* 1090 MHz antenna, though I supposed 1080 would be close enough.

And just set it up to also share the feed with adsb.fi as well:
https://github.com/adsbfi/adsb-fi-scripts

I got a new 1.1m antenna to replace the 0.2m PCB one I had initially specced for mobile use. Can you tell when I hooked up the new one?