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Send wireless signal through metal roof

Posted on 2009-04-11
Last Modified: 2013-11-09
I have a client with two barns. One they use as a house and the other they have an apt in the upstairs part. The house one has an N router in it and puts out a very strong wireless signal. The problem is that the apt in the second barn has a metal roof on it and no windows in the side facing the house. They apt has a Cisco G repeater but it wont pick up the N signal inside the apt.
      My guess is that all the signal is bouncing off of the metal roof. The front of the apt is wood and a door with glass in it. I was thinking of maybe mounting a N repeater by the front door on the outside of the house so that the metal roof wouldlnt interfere with the signal and the computers inside the apt could  pick up a wireless signal from the repeater through either the wooden wall or the glass in the front door.
    Maybe i am way off base here so i would like some suggestions. The two buildings are about 50-75 yards apart. Both buildings share the same phone number so i cant install a second modem in the apt. I just need to get the wireless signal from the main house to the apt without having the metal roof stop it.   TY in advance for your input.
Question by:bostonstaus
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Expert Comment

ID: 24123213
Did you think about an external antenna? It would be the perfect solution.
You can even get a directional antenna for low price, you just need to exit with the antenna cable to the outside.

Author Comment

ID: 24124539
Im not familiar with using that. Would you mind explaining that in more detail. Please forgive my ignorance on the subject

Expert Comment

ID: 24124852
In the place where you have the metal roof, you have just a client that needs to connect to the wireless directly, or you have some kind of Access Point that tries to get the signal?

What kind of equipment you have in the place of the metal roof?
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Author Comment

ID: 24126737
They were using a G repeater but it wouldnt pick up the signal from inside the apt. I was thinking of mounting an N router outside the apt with the metal roof or using two access points, one mounted outside and one mounted inside. The one mounted outside could pick up the N signal from the main house and the one mounted inside could pick up the wireless signal put out by the one mounted outside.
Does that sound like a reasonable way to go?

Accepted Solution

ping_it earned 500 total points
ID: 24126768
I think the best and cheapest way is:

to put an AP even iside, but an AP that permits to attach an external antenna, so you can have the AP inside, and somehow you pass outside the cable and you put the external antenna wherever you want.


Here you have the antennas for sale...


and here you have an example of cable.

Of course the cable should be long enough to go outside of the metal roof. And check the connectors of the cable. They should mount on the AP or repeater.

Author Comment

ID: 24131016
I assume a G ap would work. They dont have to have N in the apt, just be able to get on the internet.

Expert Comment

ID: 24131202
The AP should be the same even if N can work also with G (anyway be sure - don't allow risks). In the apartment and under the metal roof put two G, they are enough fast and good.

N I suggest you just if you need a fast file exchange between the two computers.

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