One Pi, Two Dongles, Two Maps, Two Receivers

FlightAware ADS-B Flight Tracking
30

The sequence of steps is a bit vague (I’m a Raspi novice) with the edits and “I suppose” comments.

I was able to follow your numbered steps in your 3.7.1 Quick-Start Guide to get 1090 & 978 working on 1 Raspi - thanks!