Well… I guess is more than one way to skin a cat.
Personally I wanted to keep consistency with what manufacturer of airspy recommends on their site for FA compatibility (link above), to eliminate confusions. In my dump1090-fa add-on, I think the default was for bo 30005, not 0. But I can’t guarantee now and I don’t feel like reinstalling it.
Also, the push method worked if the piaware config file was set on “relay”. Obj presented that clearly:
relayconfig "OUTPUT_OPTIONS=\"--listen 30005:R --connect localhost:30104:R\""
::fa_config_generator::generate_file "/etc/default/beast-splitter"