[wxsig] Wind application

[Gerry Creager]

If I recall correctly, the last wifi challenge was won by a group of 
high school folks at over 130 MILES.

20 mile links are pretty straightforward.

gerry

ks4q at zingleman.com wrote:
> I work in this industry.  We see these claims all the time.  
> 
> Just use 802.11b as a benchmark....how far does that go?  I've seen industry claims of up to ...yes,
>  they are smoking something...20 miles.
> 
> You might be best using something at 900 MHz that is frequency hopping instead of direct sequence
> modulation.
> 
> Ernie KS4Q
> 
> 
> ----- Original Message -----
> From: Steve Daum
> To:  wxsig at lists.tapr.org
> Sent:  Thu, 30 Mar 2006 13:13:26 -0500
> Subject: Re: [wxsig] Wind application
> 
> On this site:
> 
> http://www.maxstream.net/products/xbee/xbee-pro-pkg-r-modem-zigbee.php
> 
> reading about this product:
> 
> XBee-PRO™ Zigbee/802.15.4 RS-232 RF Modem
> 
> They mention up to 1 mile. Now if this is a real full mile - it might work 
> for the first installation I am considering. If it is up to 1 mile only in 
> PERFECT circumstances..that is a different story.
> 
> Steve
> 
> 
> From: "ks4q at zingleman.com" <ks4q at zingleman.com>
> Reply-To: TAPR Weather Station SIG Mailing List <wxsig at lists.tapr.org>
> To: <wxsig at lists.tapr.org>
> Subject: Re: [wxsig] Wind application
> Date: Thu, 30 Mar 2006 12:45:20 -0500
> 
> I believe that zigbee is for short range applications.....like up to 100 
> feet or something like
> that.
> 
> Ernie KS4Q
> 
> 
> ----- Original Message -----
> From: Steve Daum
> To:  wxsig at lists.tapr.org
> Sent:  Thu, 30 Mar 2006 07:37:13 -0500
> Subject: [wxsig] Wind application
> 
> I have been reading TAPR postings for a few months. Thanks for all the
> information you post. I have a question...
> 
> I want to put a wind speed/direction sensor on a remote mountain top. I'd
> like for the data to arrive on a web server. I don't want a full PC near the
> sensing equipment. There is no cellular service and no land-line phone
> service - and no power.
> 
> I have read about these Zigbee RF modems. Have you ever heard of an
> application
> using the one-wire sensors, solar power, local battery, and these RF modems
> to get data to some base station?
> 
> Any insight appreciated.
> 
> Steve Daum
> Dayton, Ohio
> 
> 
> 
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