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Long range WiFi - Through Buildings

Last response: in Wireless Networking
March 16, 2012 11:21:14 AM

Hi guys,

I've recently lost my ability to access the internet at uni and as this is quite an inconvenience I am considering some alternatives, the most viable one I've managed to come up with hinges on the fact that I live in a building which is only a road and another building away from the main uni buildings (3 buildings on 2 city blocks), basically it looks like this:


So I'm thinking of building one of these: or waiting for the r20000g (dual band) to come out and buying that.

THEN the area I'm having a bit of trouble with: I need to get reception about 600-700m away through buildings, so I've been looking at Yagi antennas and such but can't seem to find any information on the following:

1. Will a high powered directional antenna go through a few buildings and still make it 1km (.6 miles)
2. How directional is a direcitonal antenna? like if I point one in the general direciton of the building how acurate do I have to be? (I have no problem buying 4-5 antennas if I need to)
3. Do I need a new wifi antenna for my laptops? it seems odd to me that a laptop would be able to transmit back 1km while I need a giant antenna to get to the laptop (I know its not this simple but it still seems odd)

and finally:

Do any australians know if this is illegal? seems odd that I've never seen another wireless signal like this if it were legal and as easy as I think it is likely to be.


Best solution

March 16, 2012 5:52:52 PM

I would be surprised if you get an adequate b/g/n wireless signal at that distance without also having a directional antenna on the transmitting end, which you obviously can't do.

I cannot believe that it could be legal, and it seems to break Australian federal law:
March 16, 2012 7:40:51 PM

I'm not sure what you are asking here. You seem to want to install the wireless router in the building a block away... so I'm guessing you have permission to do so.

As to what types of signals are allowed in your country I don't know.

As to the best way to do something like this, a wireless bridge may help
March 18, 2012 10:45:14 PM

Best answer selected by hazar3000.