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AP client (which are also called "wireless-ethernet bridges" or wireless console adapters)


Something like a Linksys WAP11 in AP client mode (easy to change via web interface) would work well. The antennae pop right off and you can attach one of those hyperlink antennae. The connector you need on the pigtail or cable for Linksys would be a RP-TNC (RP = reverse polarity).

I actually have a couple of RP-TNC to N-Female 18 in. pigtails that I'm not using. I'll send you one free of charge if you want to use this sort of setup (would still require an N-Male to N-Male cable to the antenna.)

You'll want the cable from the AP client to the antenna to be as short as possible. Basically, just long enough to get to someplace waterproof with power (ie...in the attic). You can run a long ethernet cable from there.