There's a thread about this already (kinda) >>1062020
>>1063737
Bad idea. That shit only reaches like 10km, aka it only works inside big cities which is the last place you want to be in when SHTF (or around big cities if you have mountains with line of sight to the transmitter and you're willing to camp on there). Unless you place the nodes yourself on your neighbor's houses, I guess. But in that scenario buying cheap chinese VHF radios would probably be way more useful.
We have to think practical, people. Get your heads out your asses.
There won't be almost any power. Gas generators will draw to much attention. We'll have to do with small solar panels at best (although you would be better off if you can avoid displaying that level of luxury to other people who might find your shelter).
At most you'll be able to power a small HF radio (100 watts at most) for limited amounts of time while you're not using that power to heat water or food or to power your fridge or lights. For anything more than medium range comms it'll be back to CW or nothing, if you can find somebody who knows morse code and has solar panels and time to transmit, that is. And it's not like it'll be that useful. Remember, there's no help coming your way. Gas and food will be gone in days. At most it could be useful to know what the government is up to in other states. What is going on in other countries will be utterly irrelevant. Ideally you would have coordinated frequencies and times to communicate with other people who have autonomous setups in every zone you want to communicate with.
In the recovery period the most popular way of distributing knowledge will be the mimeograph. If there's some power available then also sd cards and flash drives, maybe some will know how to transfer files through local wifi APs and set them up for that purpose. Maybe even some smart people will set up php forum servers that you can connect to if you're in the vicinity. People are crafty with technology when there's no pre-made solution, as long as their basic needs are satisfied.
But the Internet and even the phone network will take a long time to come back (otherwise it wouldn't be that hard to set up a switched packet network or store-and-forward like Fidonet works), and there won't be enough resources (like gas and power) to set up an alternative global network through a sneakernet.
>>1063736
Good, but not enough.
Ideally you would want to have many disks with the whole libgen repo, a Debian or Ubuntu mirror and Windows software, classic music, movies and series, common console, Windows and Android games, etc. All that will be useful especially when there's power but no high bandwidth connections (or the serves hosting that stuff simply disappeared). People will pay good money for that stuff, and the drives can for the most part just sit there until they're needed and consume no power.
>inb4 muh EMP or solar flare
As I understand it, that shit is dangerous because transmission lines act as huge antennas and pump the induced high voltages into the grid, frying everything that's plugged in. If something is not plugged in it'll most likely survive, especially if it's small and/or it's shielded like in a computer case (bonus points for grounding them too). Even stuff that's plugged in maybe can be brought back to life by just making small repairs on the PSU or changing a fuse, like it has happened to me when lightning strikes the power lines.
Oh, btw, maybe it would be wise to stock up on solder, flux, desoldering wick, and a few irons and hot air guns. Unless modern civilization is completely disrupted, then that shit will probably be completely useless in 10 years. In any case, from a purely rational standpoint any /tech/ topic should be way down your list of priorities from things like toilet paper, food, ammo, water filters/chemicals, gardening supplies, low tech carpentry tools, etc.