This first video talks about PORTABLE HAM Radio setups in the digital age. This video will be useful for a modern-day MERC campaign.
https://youtu.be/DGOyvNLk6Bg
This video talks about the "old school" SINGLE SIDE BAND HAM Radio that was developed to extend AM Radio transmission. The SSB is the mainstay radio of cruising sailors and would be common in the world of Twilight2000. It would be a major player in long-range (ie regional) comms. This video is so old, I'm asking you to rewind the cassette tape when you are finished watching it.
https://youtu.be/ivWmxFoTGDk
Swag