Packet doesn’t have to be in any particular frequency band, e.g. not in ELF-MF (3Hz-3000kHz).
It just implies packet switching instead of circuit switching or message switching, and can be done at any frequency.
APRS is packet; anything that hears a position report can decode the data and decide what to do with it, as a unit. This is versus circuit switching or message switching-circuit switching being a dedicated channel (e.g. a phone call, regardless of what the underlying protocol is, since I know we can do things like VoLTE where the underlying network packetizes and multiplexes traffic) and message switching being like email-routed all together somewhere, perhaps via multiple hops.
It just implies packet switching instead of circuit switching or message switching, and can be done at any frequency.
APRS is packet; anything that hears a position report can decode the data and decide what to do with it, as a unit. This is versus circuit switching or message switching-circuit switching being a dedicated channel (e.g. a phone call, regardless of what the underlying protocol is, since I know we can do things like VoLTE where the underlying network packetizes and multiplexes traffic) and message switching being like email-routed all together somewhere, perhaps via multiple hops.