Etydhv

Can radiation block all wireless communications?

My idea is that heavy meteorite storms are spreading radioactive dust around the atmosphere. I know that traces of radioactive elements can survive entering the atmosphere. And it seems some types of radiation can affect some radio signals. Though there are also 2 problems with this idea. First, can enough radioactive elements enter the atmosphere to have the effect, I am happy to allow new undiscovered types of radiation(or elements) if theoretically possible. Secondly would any type of radiation even theoretically, be able to disrupt all known radio and wireless data bandwidths?

Knocking out all satellites would do some serious damage, destroying navigation and much communications.

Underground/international fiber optics are hardly an easy target: they're considered critical infrastructure and are generally both protected and redundant; in vulnerable spots they are often also actively guarded. Their main point of vulnerability is where they pass under the ocean and can be attacked by trawlers.

LONG metal (copper) communication wires are far more vulnerable to EMP damage than shorter ones, at least if the EMP itself is large. They can and have been damaged by solar flares, though nowadays are rather better protected from this.

Radiation won't do much significant to disrupt wireless comms, but what would is constant electrical activity in the atmosphere. This would also give you your EMPs. A whole lot of charged dust in the atmosphere would do this, and the charge could come from radioactivity maybe? Wherever it comes from, you want charged particles causing lots of lightning.

Some serious EMPs to damage unprotected wired electronics would go some way to trashing things: I'm somewhat skeptical if even nuclear EMPs could do significant damage to non-wired electronics like cellphones. You'd have to have power density equivalent to a lightning strike every few square meters, applied over the entire planet to destroy enough stuff I think - but since you want social collapse without destroying most electronics, that would work.

So, you will destroy communication, and harm long-distance travel, but you will also hit power generation and manufacture: I would argue these are also needed for decent societal collapse, or the broken systems can just be repaired, and damaged areas of the network would be routed around.

Without power, comms, manufacture, or travel, you stand a chance of believable social collapse; food will stop getting delivered, cash machines and bank systems will stop working, news and instructions will not get distributed, so localized riots will break out, escalating as distant fires become visible through the lightning storm.

Police and the military will try to keep order, but without good comms, they will be hampered, and if they act heavy-handed will likely just inflame the population into rebelling harder.

Since you revised your question, let me try to address the radiation issue in more depth: No, you can't block all wireless communications with radiation. EM interference is what happens when you overlap a communications frequency with the same frequency but different pattern. To jam a signal, you need to match the frequency with a higher energy interference. To block a range of frequencies you need to send an interference wave for each frequency in the range at small enough of increments to disallow a tolerance for transmitting a signal in the inbetween jamming patterns. This means that wide-spectrum jamming requires WAY more power than any individual signal you are trying to jam. Now you need to consider that there are both AM and FM signals meaning that even if you broad spectrum the FM bands, AM might still be immune because you'd have to match their amplitudes instead of their frequencies meaning you need a whole second spectrum of jamming signals. Then you need to consider wire-communications still actually cover most of the developed world; so, to having a meaningful effect, you need to jam them too. To jam those you'd need to bombard them with a sustained EM radiation strong enough to physically push the electrons out of the copper wiring. If this is a natural event, this kind of full spectrum EM radiation won't stop at low energy waves. You'll probably have microwaves, IR waves, gamma rays, etc. When you add all of these forces up, you are looking at something that is so energetic that you'll basically microwave all life out of existence pretty darn quickly.

Imagine instead the following scenario for a dystopian communications blackout:

Communications companies continue to merge until there is just one global communications company. Let's call them MegaComm. There are a few companies near the end that refuse to sell, so MegaComm just buys up the suppliers that these communication companies rely on forcing them out of business anyway. People start protesting this monopoly, but since they control all communications, these people are censored and politicians are bombarded by enough lobbyists and campaign funding that nothing happens to stop them. Guided by maximizing profits, this company makes 3 very logical business choices after securing their monopoly status.

• The first is to stop worrying about quality and just focus on hiring the cheapest people they can find to run their infrastructure. Because they have monopoly power, they don't have to worry about making people happy, just as long as they sort-of fulfill their contractual requirements.




• The second is to utilize all those vendors they purchased to be able to exclusively supply all their own networking hardware. Within a decade, every industrial, residential, and commercial network is running off of a unified chip-set designed by MegaComm to eliminate all those pesky compatibility issues the old internet used to run into. This makes maintaining their network way easier and cheaper. Also makes pushing firmware updates super easy so you don't have to worry about hackers messing with your unstandardized data points that someone forgot to patch.




• The third is to run everything they do off of a highly distributed and redundant cloud platform backed by blockchain protection. Investors love all the fancy buzzwords and agree this is the way to go.

Now, MegaComm's board of directors are feeling awfully proud of themselves. They are wealthy beyond measure, everything is going great... but someone, somewhere really far down the line decides to fire a bunch of over priced senior engineers, in favor of a new office located in Sri Lanka that will save the company millions of dollars a year! Another great business choice I must say.

These new employees don't know anything about cyber security; so, a few months latter, a hacker is poking around in MegaComm's network and finds a vulnerability in their update server. Now this hacker being fed up with MegaComm's bad customer service decides to teach them a lesson by pushing a overclock virus through the update server. With-in an hour, routers modems, cell towers, and even satellites all around the world begin to catch fire and burn up.

MegaComm scrambles to restore their last firmware update so they can try to push a fix, but with communications down and the virus already installed on nearly every piece of network technology in the world, their distributed cloud platform has torn all of their data into 1000s of little pieces and spread it all over the world with no way of putting the pieces back together. As data-hubs go down, people are cut off with no way of knowing their stuff is about to overheat so everyone just sits around desperately trying to call MegaComm to find out why their internet is down while all there stuff continues to burn out.

A few hours later, ever piece of telecommunications hardware is a brick, and no one knows how to put it back together. The hacker scratches his head in disbelief at MegaComm's incompetence.

TL;DR: no. "all wireless communications" is a very, very broad category, and to disrupt all of them might well involve rendering the environment so hostile that there might not be any people around to communicate.

So.

Radiation, as provided by radioactive decay, is not a very good way of disrupting communications. A decent amount of radiation, enough to be hazardous to living things, can disrupt or permanently damage semiconductors, but you could put the clever bits of a radio in a shielded environment and have your antenna on the end of a cable and you'd probably be good to go.

You can disrupt lower-frequency radio signals (like, under 30MHz) by disrupting the ionosphere, and you can do that with various kinds of astronomical upset in the sun. It'll need to be serious and ongoing, as shortwave radios can be built very simply and cheaply that can communicate around the world, albeit with low bandwidth compared to what we're used to these days.

After that though, things start getting tricky. VHF radio is line-of-sight, but you can bounce it off things like planes, satellites or even the moon if you really wanted to. Your hypothetical meteor showers? Might make long distance VHF communication easier!

UHF and microwave transmissions can be scattered off the troposphere allowing point-to-point communication across fairly substantial distances... this was how a lot of long distance communication to inconvenient places was done back before satellite communications became cheap and easy.

You don't even have to use radio if you don't want to... free space optical networking is a thing, and whilst it is only line-of-sight, there's plenty of scope for the tech to scale up nicely. Optical networking isn't going to be vulnerable to electrical interference in the atmosphere.

So what can you do? Well, if you're happy for the disruption to be relatively short, you could arrange for a nuclear war. Lots of high-altitude EMP will be extremely bad for modern communications infrastructure, and strikes at certain places and cities will seriously disrupt wired communication too.

Nukes aren't the only way to do that, but they are pretty good at it. Something more along the lines of a natural disaster would be another Carrington Event which would take out satellites and earthbound power grids though optic fibres and various kinds of electrical infrastructure would be basically unaffected.

A serious meteorite shower would effectively disrupt communications by smashing everything up. As a natural disaster counterpart to a Carrington event, you might be able to handwave the two as having the same origin.

If you want the disruption to be widespread, long-lasting and affect multiple technologies you're basically going to need some kind of technology to do it for you. Souls in the Great Machine was a book which had a post-apocalyptic society without electricity or radio as a result of orbital microwave weapon platforms which would smite any detected EM sources on the earth's surface. There are plenty of other ideas that could have the same effect, and be of human or alien origin as you prefer. That's probably the best direction to look in.