DIY faraday options in case that whole "sat phones for senators" thing = EMP incoming
(urbansurvivalsite.com)
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I seem to recall pre-internet sat phones. Am I wrong in that memory? Not being snarky in the question. I'm not a tech guy so not sure.
The old analog systems used the hard lines for connecting between nodes. The uplink/downlink site connected to hard lines to route calls to regular users. The hardlines are not used as much as they once were. They are still available in some older buildings and sites, but mostly have been upgraded to VOIP phones and connected via ethernet vice the older RJ11 connections that we used to see. Most everything now has upgraded to RJ45 connectors and ethernet switches/routers.
Thanks.