<HTML dir=ltr><HEAD><TITLE>RE: [GLLUG] Wok wireless antenna -> p-to-p wireless</TITLE> <META http-equiv=Content-Type content="text/html; charset=unicode"> <META content="MSHTML 6.00.2900.3086" name=GENERATOR></HEAD> <BODY> <DIV id=idOWAReplyText46048 dir=ltr> <DIV dir=ltr>I used to run a multi-site wireless WAN when I was at Holt Schools.  The most important thing is a path analysis, as was previously noted.  you can get these done at a fairly reasonable price, but this will tell you if (A) its possible and (B) what height to put your antennas at.  The next thing is to get towers that can get you above the trees.  90' I think is the limit before you need a permit.  Some of the newer (read: more expensive) wireless uses technology that is resiliant to obstacles, but it costs a mint.  The goal is to set it up with free software and 486 computers, right?  If you really wanted to do it cheap, you'd get some linux boot disks and 2.4 parabolic antennas hooked up to Lucent wavelan cards (or other cards with an external antenna connector).   A while back I made some Linux Router Project boot disks  that work with a 486 and Intel pro 100 / wavelan cards you could use.  I also have an extra 2.4ghz parabolic antenna I could give ya cheap :)</DIV> <DIV dir=ltr> </DIV></DIV> <DIV id=idSignature27210 dir=ltr> <DIV>Mark Lachniet Analysts International (517) 336-1004 (voice) (517) 648-7903 (cell) mailto: mlachniet@analysts.com </DIV></DIV> <DIV dir=ltr> <HR tabIndex=-1> From: linux-user-bounces@egr.msu.edu on behalf of Nick Kwiatkowski Sent: Tue 6/5/2007 2:33 PM To: linux-user@egr.msu.edu Subject: RE: [GLLUG] Wok wireless antenna -> p-to-p wireless </DIV> <DIV> Some other portions of Lansing, I would say you might be able to do it, however, in that area (Riley Subdivision), you are looking at a lot of 2.4Ghz garbage.  I live just the other side of Cedar from you on Riley, and according to my spectrum analyzer, I'm lucky to get any WiFi working, let alone anything over 2.4Ghz worth any distance. You may want to look at another product that uses a different frequency.  At MSU, we are using a product called SkyPilot out in the farms (to accomplish exactly what you are trying to do), which utilizes the 4.81 - 4.89 Ghz range that is fairly unpopulated.  We've had pretty good success with the product over a range of about 3 miles. -Nick Kwiatkowski  MSU Telecom Systems -----Original Message----- From: linux-user-bounces@egr.msu.edu [<A href="mailto:linux-user-bounces@egr.msu.edu">mailto:linux-user-bounces@egr.msu.edu</A>] On Behalf Of Karl Schuttler Sent: Tuesday, June 05, 2007 2:14 PM To: linux-user@egr.msu.edu Subject: Re: [GLLUG] Wok wireless antenna -> p-to-p wireless I know Michael George is doing something like that...he lives out in the sticks and is getting internet from an acquaintance that way, if I remember right. On 6/5/07, Stephan Andre' <andres@msu.edu> wrote: > It entirely depends on the terrian you have between the two points. > If you were in the desert and had a clear view of the other point, I'd > say sure, it would work.  But here in Michigan we have these pesky > leafy attenuators called trees, which do an amazing job of soaking > up 2.4GHz rf, and buildings and such which splatter the rf, etc. > > With enough of an antenna, you could likely get it to work, but it > might be a real pain.  Building your own dish antenna can be fun; > hams do that often.  The feedhorn and its placement is more > exact than some of the wifi oriented designs I've seen say it is. > > Also there is a real safety warning here.  That 2.4GHz energy from > your wireless unit is the same as what a microwave oven uses.  A > dish works by refocusing the RF into a tighter beam.  If you have > a 100mW transmitter and make a 16dB gain dish, you'll have an > effective raidated power (ERP) of 4 watts.  Staring into that is not > good for your eyes or other small blood vessels in your head.  This > is a REAL danger.  Treating the business end of a microwave > frequency dish like a gun is a must.  So keep it off when working > with it and stay at least 12 feet away when its on (farther is > better). > > If you try this, let us know if you get it to work. > > --STeve Andre' > (ham call wb8wsf) > > On Tuesday 05 June 2007 08:23:09 Mark Szidik/mlc wrote: > > I have a project I'd like to explore similar to the wok antenna (maybe > > I'll need one) .   My home is only about 2.5 driving miles from my work. > > I'd love to be able to setup a wireles point to point link between the > > two.  Anybody done this before? > > > > Here is a google map of the locations: > > <A href="http://maps.google.com/maps/ms?ie=UTF8&hl=en&msa=0&ll=42.696693,-84.528852&">http://maps.google.com/maps/ms?ie=UTF8&hl=en&msa=0&ll=42.696693,-84.528852&</A> > >spn=0.042895,0.083427&t=h&z=14&om=1&msid=102315249805099164893.00000112fbce 8 > >3599c4ad > > > > Thanks, > > --- > > Mark Szidik > > > > "Karl Schuttler" <rexykik@gmail.com> > > Sent by: linux-user-bounces@egr.msu.edu > > 06/04/2007 11:09 PM > > > > To > > "linux-user@egr.msu.edu" <linux-user@egr.msu.edu> > > cc > > > > Subject > > [GLLUG] Wok wireless antenna > > > > I've got a wok, and we don't really do chinese cooking here, so I was > > wondering if anyone has made a Wok antenna. In case you aren't aware, > > these are known to be superior to the cantenna, and simpler to make; > > just checking. > > > _______________________________________________ > linux-user mailing list > linux-user@egr.msu.edu > <A href="http://mailman.egr.msu.edu/mailman/listinfo/linux-user">http://mailman.egr.msu.edu/mailman/listinfo/linux-user</A> > _______________________________________________ linux-user mailing list linux-user@egr.msu.edu <A href="http://mailman.egr.msu.edu/mailman/listinfo/linux-user">http://mailman.egr.msu.edu/mailman/listinfo/linux-user</A> _______________________________________________ linux-user mailing list linux-user@egr.msu.edu <A href="http://mailman.egr.msu.edu/mailman/listinfo/linux-user">http://mailman.egr.msu.edu/mailman/listinfo/linux-user</A> </DIV></BODY></HTML>