<html><head></head><body>You might want to check out the alvarion fhss 900mhz radios. You can pickup the su units cheap and convert them to ap's.<br>
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You will want to run H pol , check out the old antenna lab, he's got a 900 mhz omni that works well.<br>
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Even with this expect only 2 to 3 miles of tree penetration. <br>
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73s W9CR <br><br><div class="gmail_quote">On March 6, 2015 1:38:16 PM EST, Bart Kus <me@bartk.us> wrote:<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<pre class="k9mail">Hello,<br /><br />5.9GHz is awesome when it works. The speeds are great, and it carries <br />as far as the eye can see with very low ambient noise floor. It does <br />however have problems when it needs to penetrate trees and buildings. <br />To alleviate this, I'd like HamWAN to offer a slower but deeper <br />penetrating 900MHz service. 900MHz is the lowest frequency ham band <br />without bandwidth or modulation rate restrictions. Before we deploy a <br />full cell site, I'd like to get some real-world experience with 900MHz <br />penetration, propagation and ambient noise conditions. Here's the <br />cheapest appropriate hardware we can use for this:<br /><br />1x Vpol omni antenna @ $79.50/ea = $79.50 <br />(<a href="http://www.balticnetworks.com/laird-antenna-omni-8dbi-900mhz-n-female-integrated.html">http://www.balticnetworks.com/laird-antenna-omni-8dbi-900mhz-n-female-integrated.html</a>)<br />2x 9HPn modem @ $108.00/ea = $216.00 <br />(<a
href="http://www.balticnetworks.com/mikrotik-metal-9hpn.html">http://www.balticnetworks.com/mikrotik-metal-9hpn.html</a>)<br />1x Shipping @ $UNKNOWN (quote not showing?! Need to call them.) = <br />$40.00 ???<br /><br />Total: $335.50<br /><br />I already have a 900MHz high gain Yagi-Uda in my inventory and can use <br />that to do various field tests. These can be directly compared against <br />5.9GHz performance since the gear will be deployed to one of our <br />existing 5.9GHz cell sites. The results of such comparisons will give <br />us a good idea of how well 900MHz might do for HamWAN.<br /><br />Disclaimer: These may not be the right modems or antennas for us <br />long-term. A real deployment might use Ubiquiti Rocket M900 with their <br />sector antennas. These Ubiquiti items are far more expensive though, <br />and their software doesn't integrate as easily into our network, so for <br />the purposes of the test I believe the set of hardware I proposed will <br
/>do well at deploying fast and keeping costs down.<br /><br />NOTE: If both the votes are approved, I will combine shipping from <br />Baltic to save money.<br /><br />--Bart<br /><br /><hr /><br />PSDR mailing list<br />PSDR@hamwan.org<br /><a href="http://mail.hamwan.net/mailman/listinfo/psdr">http://mail.hamwan.net/mailman/listinfo/psdr</a><br /></pre></blockquote></div><br>
--<br>
Bryan Fields<br>
727-409-1194<br>
<a href="http://bryanfields.net">http://bryanfields.net</a></body></html>