How do we get around the Internet Kill Switch?

self | jimjohn

[jimjohn]

interesting replies. working on a part 2 of this post, but here's another question: What could a person(s) do just their existing computer and say... the wireless router in the event there is no internet?

Could there be a way to tie a wireless network (or several networks) to a ham radio net?

just thinking out of the box

[NewHampshireDuo]

One fellow did suggest TCP/IP for Dummies.

[Noumenon]

Good place to start, I think. Still, nothing beats hands-on. It’s useful to build a small server-based network at home. taht way, you can experiment and get immediate results - one way or the other - as you learn.

[NewHampshireDuo]

Probably will do that - I’ve got enough hardware to put something together. My problem’s mostly (I think) the terminology and getting a grounding. I’m pretty good technically and like self study.

I did just check the local comm colleges. HaHa.Auto mechanic, boat repair, fishing, carpentry, EMT, firefighter, etc.

[The Comedian]

One min after implementing it, Obama would hear from 2000 CEO’s.

LOL. Like The Kenyan gives half a crap about what a bunch of capitalist crackers say.

Anyway, I started investigating this very issue a couple of months ago. I want to create a mesh Internet tied together with HAM between access points. A fellow FReeper gave me the following direction:

Check out “Freifunk” and OLSR as starting points. These networks employ modified firmware for the Linksys WRT54 router to create mesh networks. The OLSR style networks are self forming, constantly updating. You can configure some nodes with actual internet access to bridge members of the mesh to the real internet. I used the mesh in a specialized application using a TCP/IP based publish/subscribe middleware spread over a very long train.

The mesh provide the dynamic wireless paths to the locomotive as the train geometry changed. The “Freifunk” arrangement is more statically connected than a moving train. Check out the www.olsr.org for free OLSR mesh code that can be deployed on Windows PCs and UNIX like operating systems. The versions of the protocol that can see the RSSI (signal strength) can apply that information to provide better routing metrics. The non-RSSI aware version uses a different packet format over the air. You have to decide which one to deploy. My old embedded wireless Ethernet adaptors didn’t have access to RSSI, thus I was compelled to use the non-RSSI version. I would have preferred RSSI metrics to improve the quality of the routing decisions.

HAM packet has been traditionally AX.25 on top of NETROM to achieve connectivity. It’s not nearly as agile as the WiFi flavor described above. You have some real modulation limits on the low bands. On 2m, you can get some 56Kb modems (I think TAPR may still have some).

For non-packet narrow band work, check out PSK31. It’s a narrow band flavor of what we used to do on the old ASR teletype with 170 Hz shift, but MUCH narrower. All you need is a PC with a sound card an connections to your radio play.

Today is a good day to die.
I didn't say for whom.

[Charles Martel]

Perhaps not so coincidentally, I overheard some comments concerning HAM / Mesh networks today over lunch. People are looking at their options with more than just a casual interest.

[The Comedian]

Perhaps not so coincidentally, I overheard some comments concerning HAM / Mesh networks today over lunch. People are looking at their options with more than just a casual interest.

One of *the* most merciful favors G_d has granted America is that we get to see everyone else's mistakes first before we get our opportunity to repeat them.

Today is a good day to die.
I didn't say for whom.

[The Comedian]

Mr. Jim,

You need to be up to speed on this discussion, since your system is the de facto American patriot Internet presentation layer.

Today is a good day to die.
I didn't say for whom.

[TruthConquers]

PING!!