I have a setup with a raspberry pi and a flightaware pro stick plus v1.0. I make recordings of the output available on localhost:30005 (beast output). The antenna is indoor in front of a window, so the number of aircraft seen is not very high. Over the last months, I noticed that the number of messages received is heavily impacted by at least two things:
- On my raspberry pi 3B, I originally wrote the data to an external hard disk (with its own power supply) connected to the raspberry pi. Later, I changed this to writing the data to the internal sd-card. The number of received messages increased dramatically.
- I changed the raspberry pi 3B to a 3B+. The rest of the setup remained the same (same dongle, antenna, etc). When I use wifi on the raspberry pi, the number of received messages is again much lower than when I disable wifi and only use cabled network.
I have no idea where the differences are coming from. It could be an EMC shielding problem, a data bus inside the raspberry pi suffering from saturation, or something else…
Are such differences normal? Can they be avoided?