So maybe that dual power needs to involve some dual infrastructure, yeah?
Start a mutual aid group who fronts as a tech support collective and gradually install mesh routers and nextcloud instances throughout your neighborhood to make it redundant in case of internet “outages”
Police in parts of the US already have equipment that can be used for triangulating all kinds of RF and access points if meshnets ever became a realistic alternative in this scenario.
Odds are the "emergency internet off valve" scenario would be short-lived... Until it isn't, but at that point meshnets are probably a lot less interesting, if you even have electricity.
All true, but on the other hand, ultra wide band tech might be able to evade jamming, if not detection. I’ve heard some promising things about using the opacity of the atmosphere to create a distributed optical network. When you’re just trying to coordinate forces and not, say, stream 4k bullshit, there’s a lot more possibilities.