Another question:
Radarbox V6 software works with ModesDeco or ModesMixer?
No, AirNav Radarbox V6
does NOT work with any of formats used/produced by dump1090-mutability, dump1090-fa, ModesMixer2, and ModesDeco2.
However AirNav Radarbox V6
does work with the special format produced by RPi's rbfeeder at
RPi's Port 32088.
To use RPi's rbfeeder's special formated output, do following settings in AirNav Radarbox V6:
Main Menu -> File -> Preferences -> Tab "Radarbox" -> Scroll to bottom -> Add RPi's IP address, and add Port 32088 -> Apply -> OK
Please see two screenshots below.