Sounds like this project could get interesting, I'll have more details to follow.
I'll have some pictures of the two tower installs soon. -Cameron > <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> > <html> > <head> > <meta content="text/html;charset=ISO-8859-1" http-equiv="Content-Type"> > </head> > <body bgcolor="#ffffff" text="#000000"> > I agree. Wind turbines really only produce about 50% of what they claim > (even at full wind speed). You will need 4 or 6 of that size wind > turbine to keep things running.<br> > <br> > We had a site that was on a 9500ft mountaintop that showed a 15mph wind > average (over the entire year). We put up two 400 watt turbines and had > 10 or 12 batteries (100ah). We only had 5 radios total (trango) and > a > small 5 port 12v switch. The site would stay up for about 3-4 days > before we had to go start the generator. I think our total draw was > under 80 watts for everything.<br> > <br> > You need to take a look at the Bergey wind turbines. They are > expensive, but they work really well. However, you can NOT mount them > on the top of a Rohn type tower... their mounting pipe has to be exact, > and if it's off by even 1/8", the whole thing will eventually vibrate > itself apart. Spend the extra $500 and buy their recommended mounting > tower system.<br> > <br> > Travis<br> > Microserv<br> > <br> > JohnnyO wrote: > <blockquote cite="mid:[EMAIL PROTECTED]" > type="cite"> > <pre wrap="">Cameron - unless you have CONSTANT wind, you are going to > be seriously > underpowered. > > JohnnyO > > ----- Original Message ----- > From: <a class="moz-txt-link-rfc2396E" > href="mailto:[EMAIL PROTECTED]"><[EMAIL PROTECTED]></a> > To: "WISPA General List" <a class="moz-txt-link-rfc2396E" > href="mailto:wireless@wispa.org";><wireless@wispa.org></a> > Sent: Monday, March 17, 2008 6:22 PM > Subject: Re: [WISPA] Off Grid System Design Comments. > > > </pre> > <blockquote type="cite"> > <pre wrap="">We are installing a new tower very soon (in the next > couple weeks) that > will be run completely off Wind power with a 400-watt wind turbine. Of > course we will have 6 105 amp hour batteries. Our draw at one of our > popular sites is under 375 watts. This using a PC-Based MikroTik/ HP > Procurve 2524, 6 Alvarion B NET Backhauls, 2 Alvarion VL-AU's, 1 Trango > 900 Sector. > > We switched some hardware in the MikroTik routers mostly the newer low > powered AMD cpu's and that made a hugh difference and going from the HP > procurve 2424m to a 2524 which cut the wattage from 90 watts to about 25 > watts. The Alvarion Units use about 200 watts total and the trango is like > 13 watts or so, (been a while since I checked them). The mikrotik router > is uing 60-75 watts. All in all, not to shabby as far as power > consumption. > > -Cameron > > </pre> > <blockquote type="cite"> > <pre wrap="">I wanted to get input from the WISPA list about a > complete design for a > off > grid base station design base on a dual and quad radio system. We have > been > looking into this and have come up with a design using both wind and > solar > power that will keep a unit up and running 24/7/365. The idea is to have > a > complete package design so the base stations can be installed anywhere, > but > in order to keep the costs low it would be base on a max 48Watt design. > > Questions: > 1. Is this something WISP would want in the USA, and would find useful? > 2. Would you like this in a single package or parts (where a package > would > have a 1 year warrantee and parts would not) > 3. What are you finding the power needs are at a typical WPOP? > 4. Other Comments? > > > > > > -------------------------------------------------------------------------------- > WISPA Wants You! 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