Directional Antenna may do what you are looking for? Hawking actually makes some good stuff for this: http://www.amazon.com/Hawking-Directional-Antenna-outdoor-HAO14SDP/dp/B000B59J8I There are also some useful dish antennas: http://www.amazon.com/2-4GHz-Square-Parabolic-Antenna-24dBi/dp/B000V0ONTI/ref=sr_1_15?s=electronics&ie=UTF8&qid=1309911567&sr=1-15 I have actually seen people have surprisingly good luck with a pringles can and an existing wireless antenna: http://www.turnpoint.net/wireless/has.html http://www.oreillynet.com/cs/weblog/view/wlg/448 Easy and cheap and directional. Kiernan Gulick-Sherrill Green Earth Computers www.greenearthpc.us kiernan at greenearthpc.us 413-282-TECH Follow Me: [image: Facebook] <http://www.facebook.com/greenearthpc> [image: LinkedIn] <http://www.linkedin.com/in/kiernangs> [image: Twitter]<http://www.twitter.com/greenearthpc> Member: Business Networking International (BNI) Mill River Chapter: visit http://millriverbni.com On Tue, Jul 5, 2011 at 7:44 PM, Dan Nachbar <dan at nachbar.com> wrote: > ** Be sure to fill out the survey/skills inventory in the member's area. > ** If you did, we all thank you. > > > I have an "off the grid" wifi application (it's for > realtime data collection) where conventional wifi > doesn't have quite enough range. > > I need about 700 feet, outdoors, generally unobstructed, > and line of sight. There are four data collection locations. > Each data location needs to connect to a central location. > All of the data locations are within about 180 > degrees of azimuth with respect to the central location. > I don't have the option of putting repeaters between the > central location and the data points. > > I've tried several amps and antennae from several different > web stores but they don't seem to do much better than > the little "rubber duck" antennae on the usual boxes. > > In contrast, I've had good luck with some 1-watt mesh-y > units (i.e. Ayrston's Ayrmesh boxes - > http://www.ayrstone.com/products.html ) > But these units always need to "contact the mother ship" > at boot-time. So "off the grid" doesn't work. > > Anybody have a good source for higher powered wifi units? > I'd like to get away from Ayrmesh if general. They are > pricey and I hate having to rely on their website in order > to boot. > > Alternatively, it is possible that I'm botching the set-up > of the amps/antennae that I already have. Is there a good > resource (website?, book?, person?) on the process and pitfalls > of this sort of thing somewhere? > > Thanks in advance, > Dan Nachbar > > _______________________________________________ > Hidden-discuss mailing list - home page: http://www.hidden-tech.net > Hidden-discuss at lists.hidden-tech.net > > You are receiving this because you are on the Hidden-Tech Discussion list. > If you would like to change your list preferences, Go to the Members > page on the Hidden Tech Web site. > http://www.hidden-tech.net/members > -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.hidden-tech.net/pipermail/hidden-discuss/attachments/20110705/8f5341db/attachment.html