Setting up a 3 computer network

We are a rodeo association and we need to connect 3 computers wirelessly. These computers may be as close as 100 feet or as far apart as 100 yards outside. We will have our main computer with the software and 2 computers that need to connect and use this software simultaneously. Do we need an internet connection or just a wireless router with a long range adaptor? And what do you recommend for the best router? We can not have any connection problems. I am new to this but pretty computer savvy. Any help is greatly appreciated...

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You maybe looking at "using a router as a WAP".

How is online.

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Iffy. The distance might be too far.

But any router, even without an internet connection could serve as a central connection point then it's just the same as any network setup.

As to not have connection problems, no one will assure you here. WiFi is open to interference and now that folk carry smart phones with WiFi, you can never be sure. But go ahead and test your setup.

As to the router, try one and see. I found that most have about the same range.

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