Good to know2 sections
Licences
You are responsible for the frequencies you use: amateur bands need an amateur licence, GMRS needs a licence in the US, FRS limits power, and NOAA weather, marine and railroad channels are receive-only (the app never transmits there). The standard lists in Add a zone say on each one whether a licence is needed.
Time limit
SignalDeck ends a voice transmission after 28 seconds. The radio's own limit is 120 seconds; release and key again to continue.