Your assignment: Design a post-apocalyptic communication system

[CCWilson]

I'm a programmer but weak on hardware so I'd appreciate your help. In a novel I'm writing there are about one hundred underground cities housing one million people in the US; the rest of our population is dead. Somewhat smaller percentage of survivors in Europe and Asia. We have several years warning and want to establish a communication system - internet and television - for the survivors, including - if possible - communication with Europe and Asia via undersea cables. The cities have plenty of energy available but there will be none between cities, so I wonder if the distances between nodes will make it impractical.

Can anyone help me with this? Thanks.

 

[Simon Bridge]

Your assignment: Design a post-apocalyptic communication system

Sounds like the original design parameter for the internet... so what's wrong with that?

 

[Viracocha]

This but with really long strings

 

[Aero51]

Ham Radio?

 

[jhae2.718]

Satellite comms?

 

['roidbreaker]

they should use the remaining us nuclear arsenal to broadcast morsecode seismically.

they can use old USGS equipment if they're a little further away or hard of hearing.