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Old 11-12-2006, 08:02 AM
tf
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Default Re: Turn key parts for point-to-point link?


Nate Bargmann wrote:
> Hi everyone.
>
> I am thinking about linking two farmsteads via a wireless point-to-point
> link. Using Splat! (an RF path analysis tool for Linux written by John,
> KD2BD), I have determined that with antennas at 30 and 25 feet, I have a
> path clearance of 20 feet and a Longley-Rice path loss of 109 dB @ 2400
> MHz. Assuming an RX sensitivity of -95 dBm (are they that good?), a TX
> power of +20 dBm, antenna gain of 17 dBi,throw in 2 dB for cable/connector
> loss (approximately 0 dB for an integrated unit) and I figure the signal
> at the far end would be about -74 to -76 dBm which should give about 20 dB
> of fade margin. We might have to trim a tree or two at one end. :-)
>
> I've used Google to try and find some off the shelf equipment and I either
> wind up finding low grade consumer items meant to link rooms or high end
> commercial stuff intended for backbone use. So, what is out there, either
> integrated units or something I can put together, for about $500 or less
> for this link?
>
> Thanks!
>
> - Nate >>
>
> --
>
> "The optimist proclaims that we live in the best of all possible worlds,
> the pessimist fears this is true."



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