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Old 11-11-2006, 02:28 PM
Nate Bargmann
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Default Turn key parts for point-to-point link?

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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