Epic wifi or something needed

[alquich]

I have 3 pcs arranged in a triangle. A and B are 300 meters (1000 feet) from each other and 150 meters (500 feet) from C. I need them to be connected, no you can't use internet connection or wires. Imagine the place as the most crowded area of NY so there might be interferences of every kind. Ideas? Wifi N?

 

[imagoon]

Cell phone service.
50ghz point to point
802.11(something) point to point links.

 

[drebo]

If you have line of sight, it's easy. If you don't, you'll need some kind of 900mhz service (better penetration, less interference).

Although, your distances really aren't that great. A very high quality AP with a good quality antenna might get the job done.

 

[spidey07]

Wireless could work with directional antennas. Just depends on what's between them. Put two cards in the centrally located PC and bridge the connections to form a single layer2 network.

 

[alquich]

I do have a line of sight between the computers. But I don't what an "AP" is or a layer2 network. Could you explain it to me as if I were your Grandma? I only know how to setup my home's basic router and put a password on it.

 

[Modelworks]

If they are in the same building and same power wires look into powerline networking. It can be problematic too, but could be easier than trying to set up wifi if you are not familiar with the technology.

Powerline is basically plug and play. It either will work or it will not.
http://www.amazon.com/gp/product/B0..._m=ATVPDKIKX0DER&pf_rd_r=0F6B9QAVYSZYTQQT733Y

 

[drebo]

I do have a line of sight between the computers. But I don't what an "AP" is or a layer2 network. Could you explain it to me as if I were your Grandma? I only know how to setup my home's basic router and put a password on it.

If this is for a business, hire a consultant.

 

[imagoon]

Could you explain it to me as if I were your Grandma?

"Get a consultant."

 

[gsaldivar]

If your computers are stationary and you don't mind a little work, you could always get some wifi adapters with removable antennas and a few directional antennas, then spend some time carefully aiming them at each other. High-quality fixed directional antennas and careful aiming can overcome many local interference and even some line-of-sight issues.

http://www.newegg.com/product/produc...82E16833164020
http://www.newegg.com/Product/Produc...82E16812146010
http://www.newegg.com/Product/Produc...82E16833980012

As mentioned above, this type of solution isn't really for a novice user. If you aren't prepared to spend time tweaking to make sure things work properly, and especially if this is for business use - it's best to hire a consultant!

Good luck!