“Maybe Ham radio?
Or is that something that just worked in old movies?”
It’s still there. Contact http://arrl.org . Do it quick and get a license. There’s no way it would be as fast as the internet as the bandwidth isn’t there but it would allow for communications, both digital and voice. Morse code is no longer required for testing purposes but in bad times, nothing beats morse.
I can’t figure out how to get a license on the Arrl.org site!!!