this post was submitted on 12 Jan 2026
1120 points (99.3% liked)

Technology

79476 readers
4257 users here now

This is a most excellent place for technology news and articles.


Our Rules


  1. Follow the lemmy.world rules.
  2. Only tech related news or articles.
  3. Be excellent to each other!
  4. Mod approved content bots can post up to 10 articles per day.
  5. Threads asking for personal tech support may be deleted.
  6. Politics threads may be removed.
  7. No memes allowed as posts, OK to post as comments.
  8. Only approved bots from the list below, this includes using AI responses and summaries. To ask if your bot can be added please contact a mod.
  9. Check for duplicates before posting, duplicates may be removed
  10. Accounts 7 days and younger will have their posts automatically removed.

Approved Bots


founded 2 years ago
MODERATORS
 
top 50 comments
sorted by: hot top controversial new old
[–] Butterphinger@lemmy.zip 140 points 2 weeks ago (14 children)

Every year I see more on the map. Have a solar node, good fun.

Ever useful? I doubt it, HAM would dominate in a collapse.

[–] NuXCOM_90Percent@lemmy.zip 84 points 2 weeks ago* (last edited 2 weeks ago) (23 children)

In a true emergency? Yes, HAM is the way to go and I need to get around to buying one of those super sketchy Baofengs. In theory you can configure them to use without a license (which is also on the todo list) but it is super easy to tick into the licensed use. How much people will care will mostly depend on whether your local HAM folk are narcs. But, regardless, all bets are off in a true emergency and Baofengs are dirt cheap.

But in a "the internet is out" situation? Or even a "please evacuate in a calm and orderly fashion" for a wildfire or a bad hurricane? That is where meshtastic (et al) shine and it is well worth convincing friends to pick up a t-deck or whatever. Excellent for the "is it out for everyone or just me?" checks. Also useful for letting people know which field can see a cell tower a county or two over for emergency communication or to even coordinate whether you are all gonna head North or South to hang out for (hopefully just) a few days.


And anyone thinking of using any of that for stuff the government don't want you to: You are an idiot and you need to learn about how insecure all of those are.

[–] ZoopZeZoop@lemmy.world 63 points 2 weeks ago

No wonder they're insecure with you calling them idiots all the time.

🫣

[–] ClanOfTheOcho@lemmy.world 22 points 2 weeks ago (1 children)

You just can't legally transmit without a license. You can own a ham radio and listen all you want.

[–] Brewchin@lemmy.world 24 points 2 weeks ago* (last edited 2 weeks ago) (5 children)

Perhaps where you live.

Internet 101: Laws aren't the same everywhere.


Edit: My point wasn't specifically about amateur radio (I'm also one) nor where I live, but about the old-as-the-internet habit of people scoffing about what is and isn't legal without even knowing where the person they're replying to lives.

On the radio front, numerous countries require licences to legally listen to public broadcast radio (Switzerland, Slovenia and Montenegro are examples). If your handy dandy Baofeng UV5 can pick up broadcast FM radio frequencies, in such countries it will fall under licencing requirements even if you never transmit.

load more comments (5 replies)
[–] cmnybo@discuss.tchncs.de 20 points 2 weeks ago (17 children)

Keep in mind that without working repeaters, the baofeng will only have a range of a few miles on level ground with nothing in the way. If the power goes out, most of the repeaters will go down too. Some have battery backups that may last a few hours to a few days. Depending on where you are, a few may be solar powered, but heavy use will drain the batteries. Some repeaters are also reliant on the internet for linking to increase the coverage area.

What you really want in that case is a portable HF radio and a wire antenna you can string up over a tree branch or a support with a fishing pole. In the daytime, you can use the upper HF bands for long distance communication. That has a range of thousands of miles, but nearby stations won't be able to hear you if they are beyond line of sight. Since the portable radio doesn't have much power, you may need to use digital modes to get through. For more local contacts you can use NVIS propagation on the lower HF bands. That has a range of several hundred miles and can even be used to talk to someone on the other side of a mountain. Even 5 watts and an antenna strung 3 feet off the ground can work for voice contacts out to over a hundred miles.

load more comments (17 replies)
load more comments (20 replies)
[–] chobeat@lemmy.ml 31 points 2 weeks ago (3 children)

I guess here the topic is more of insurrections, like what's happening in Iran right now or how it went on in HK

load more comments (3 replies)
[–] chocrates@piefed.world 19 points 2 weeks ago (1 children)

Is it meshtastic? I'm pleasantly surprised by how much it's grown around me in just a year

[–] Butterphinger@lemmy.zip 16 points 2 weeks ago (2 children)

It's cool yes. But my wonder is if it will be on anyone's mind when things go south.

In a lawless world, could you trust anyone that said hello back?

load more comments (2 replies)
load more comments (11 replies)
[–] circuitfarmer@lemmy.world 62 points 2 weeks ago* (last edited 2 weeks ago) (16 children)

I'll say what I just said on a similar thread: if the internet goes down tomorrow, mesh will mean very little compared to ham radio.

Any quality transceiver built in the last 100 years will be more useful. It is purely about how many exist, how long they last, and their requirements for use (which are effectively, power and antenna).

Yes, there is a license that you need in non-emergency situations. It doesn't change much anything in emergency situations, and it certainly doesn't affect the fact that there are already millions of radios out there.

I certainly wouldn't throw away a mesh if the world was ending -- I'd set it on the desk while finding contacts on HF (=world band) using a ham radio. My chances of contact there are at least an order of magnitude better.

[–] JustAnotherPodunk@lemmy.world 29 points 2 weeks ago (18 children)

I've come to the realization that mesh nodes are little more than a gateway drug into the world of ham radio. And for that I'm grateful.

It's not as good, and does everything worse than radio. The only real world use I have found is for when cellphone networks get overwhelmed at things like music festivals and large sports games. No one else's texts go through, but I can toss by buds a node to put in their back pocket and we can stay in touch.

our local mature club is building our local mesh network out now as an introduction to the ham world. And it's working. It's getting the younger kids and adults through the door. And from there, it's an easy thing to get them interested in more useful and fun forms of communication.

[–] circuitfarmer@lemmy.world 13 points 2 weeks ago (6 children)

Now that I like. And I think there is room for both -- IF people know and understand the differences.

Mesh against ham in an emergency is not even a competition, in my view. The numbers just aren't there. But for random cellular failures etc, I see some utility.

Personally, I've just seen so much more about mesh lately than ham, and it makes me sad. If it's a gateway, as you suggest, then great. I worry that people see it as a novelty and not a gateway.

load more comments (6 replies)
load more comments (17 replies)
[–] ch00f@lemmy.world 15 points 2 weeks ago (3 children)

FYI if you're ham licensed, you can boost the output power of your mesh radio. There's a setting in most firmwares.

[–] JustAnotherPodunk@lemmy.world 14 points 2 weeks ago (1 children)

If I recall correctly, you can, but it removes your node from the public networks everyone else is using because hams cannot use encryption for coms as part of the rules for ham operation, as the non ham network is encrypted by default. You would have to build a secondary network independent of the public node list.

Correct me if I'm wrong. But that was my understanding of the difference.

load more comments (1 replies)
load more comments (2 replies)
load more comments (14 replies)
[–] rumba@lemmy.zip 53 points 2 weeks ago (10 children)

So, I setup meshtastic.

Put an antenna on my roof.

Have a decent number of mesh radios. Put one in each car in relay mode.

Setup a locally run LLM and made an interface to it.

Working on setting up a BBS.

I'm in the high density suburbs, I can, when the weather is just right, reach a single node that doesn't seem to be able to reach any other nodes.

If I go on a drive, I can see 5-10 nodes.

Adoption in the mid-Atlantic US is just so damn low, it's not really usable.

We need some antennas up high, but there aren't any reasonable options around me.

load more comments (10 replies)
[–] Regrettable_incident@lemmy.world 49 points 2 weeks ago (8 children)

So much of our infrastructure uses the internet now that if it goes down I wouldn't be shocked if electric grids, healthcare, shopping, public transport, etc also shit the bed.

load more comments (8 replies)
[–] msage@programming.dev 44 points 2 weeks ago (1 children)

I'm just here to cheer on a Jitsi link in the wild.

Go Jitsi!

[–] Toldry@lemmy.world 13 points 2 weeks ago (1 children)

For others who (like me) never heard of this before:

Jitsi is a set of open-source projects that allows you to easily build and deploy secure video conferencing solutions. At the heart of Jitsi are Jitsi Videobridge and Jitsi Meet, which let you have conferences on the internet, while other projects in the community enable other features such as audio, dial-in, recording, and simulcasting.

https://jitsi.org/about

load more comments (1 replies)
[–] rustinmyeye@lemmy.ml 36 points 2 weeks ago

I love Meshtastic. Had a nice convo with a stranger last night while I was LoRa wardriving to test out the range of my new rooftop antenna on my house. 

[–] Jyek@sh.itjust.works 34 points 2 weeks ago (8 children)

This tech would be great if we had high power nodes all across the globe. But we do not. Maybe a cool idea could be encrypted data over FM radio. The radio stations already exist and are a dying business. Nonprofits could buy up radio stations and rebroadcast data broadly and only those with the encryption keys could decrypt. Cut the ISP out entirely. Like the difference between a local call and a long distance call.

Meshtastic communication would prioritize local hops where they are available and then where there are spans of area without nodes, they could hop across radio broadcasts.

Primary issue would be speed. Next to no bandwidth on a signal like that. Kbps not Mbps. Perhaps an incentive for much better compression as well.

[–] Jyek@sh.itjust.works 20 points 2 weeks ago (7 children)

For anyone reading this currently, it appears that regulation bans any form of encryption over HAM radio broadcasts. So I guess that's one reason this won't work.

load more comments (7 replies)
load more comments (7 replies)
[–] dreadbeef@lemmy.dbzer0.com 28 points 2 weeks ago* (last edited 2 weeks ago) (2 children)

The internet will get back up if it goes down. It is very decentralized. Sea cables and DNS is where most of the centralization occurs, and DNS going down is not at all the end of the internet. How man sea cables have to be broken at once for the internet to break, I'm not entirely sure.

Meshtastic is a cool thing and it is very useful, internet up or down.

[–] Olgratin_Magmatoe@slrpnk.net 49 points 2 weeks ago (7 children)

That won't help for situations where a government shuts down access to the internet.

[–] Blackmist@feddit.uk 15 points 2 weeks ago (3 children)

How resistant would this be to jamming? Iran managed to black out Starlink.

And how trackable is it? Not sure how many people would be prepared to run one of these boxes if the Revolutionary Guard are going to come knocking.

load more comments (3 replies)
[–] dreadbeef@lemmy.dbzer0.com 14 points 2 weeks ago (1 children)

Riots fix that, not meshtastic

[–] Olgratin_Magmatoe@slrpnk.net 23 points 2 weeks ago (5 children)

Riots are better coordinated when people can communicate wirelessly

A government can shut down a riot of 10,000

It struggles with 10 1,000 person riots.

load more comments (5 replies)
load more comments (5 replies)
load more comments (1 replies)
[–] qyron@sopuli.xyz 27 points 2 weeks ago (6 children)

If this is something I can setup with no need of complex licenses, it would be interesting.

I live in a small town and it could prove as a useful city project for cheap, reliant, local communications.

load more comments (6 replies)
[–] eager_eagle@lemmy.world 25 points 2 weeks ago

Other timezones

[–] melsaskca@lemmy.ca 23 points 2 weeks ago (4 children)

I've not been recycling my tin cans and I have a whole shitload of string. Happy to share.

load more comments (4 replies)
[–] ryan213@lemmy.ca 17 points 2 weeks ago

Queue IT Crowd episode...

[–] sefra1@lemmy.zip 16 points 2 weeks ago (11 children)

Meshtastic sounds great in concept but IMO it's useless in most parts of the world due to it's extreme low power.

If all your neighbours have one or there aren't many buidings around blocking line of sight then meshtastic has great potential. Otherwise I would stuck be sending messages to myself.

Now, they made boards with more power that operated and crossed at several different frequency bands, specially shortwave, then meshtastic would be an incredibility powerful too. However illegal.

load more comments (11 replies)
[–] toiletobserver@lemmy.world 16 points 2 weeks ago
[–] Danitos@reddthat.com 15 points 2 weeks ago* (last edited 2 weeks ago) (3 children)
load more comments (3 replies)
[–] Noodle07@lemmy.world 14 points 2 weeks ago (2 children)

I should download classic wow servers game and addons for long term storage in case of WW3 🤔 and wikipedia too

load more comments (2 replies)
[–] MidsizedSedan@lemmy.world 14 points 2 weeks ago (13 children)

Is there a map that shows where are using them? It looks like a fun idea, but I don't want to get something and no one is using it in my region. (Outback Australia)

[–] Dekkia@this.doesnotcut.it 25 points 2 weeks ago (5 children)

https://meshmap.net/

Being shown in maps like this is opt-in, so there's an unknown amount of users which are not displayed.

load more comments (5 replies)
load more comments (12 replies)
[–] droning_in_my_ears@lemmy.world 13 points 2 weeks ago (3 children)

Huh? Can anyone explain what all these words mean? Mesh? Ham radio? How does this work is it like toy walkie talkie?

[–] lepinkainen@lemmy.world 13 points 2 weeks ago (6 children)

They’re a mesh walkie-talkie, but you don’t need to walkie or talkie 😁

Meshnet means that if A can see B and B can see C, then A can message C, it’s routed through B automatically.

Also it’s text only, not enough bandwidth for speech

load more comments (6 replies)
load more comments (2 replies)
load more comments
view more: next ›