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<div class="moz-cite-prefix">+PSDR List<br>
<br>
The same page that has the generic ring also has the more
realistic map, lower down. It includes Scott's Paine Field site.
Sugarloaf will likely be replaced by "Baldi" Mtn (Grass Mtn). I'm
not crazy about the Graham Hill ground bounce site. Is there
anything with elevation around there we can use to bridge
Baldi+Capitol? Given the spacing between the sites I don't think
we need to worry about PtMP frequency mapping too much. The same
sectors (azimuth+freq) can and should be used at each site. The
only problem to solve would be the coordination of PtP link freqs
between the sites, but that won't be a real problem until there's
plenty of sites. :)<br>
<br>
The modems don't have automatic adaptive power, so if that's
needed (and I don't think it will be), it would have to be coded
by us.<br>
<br>
There are no active sites right now. I'm plowing through antenna
testing as fast as I can before site deploys. I'm working with
Cougar Mtn mgmt to make that the first high site. Then Paine
Field will be the first long distance link of about 25 miles, very
shortly after. Do you have LoS to Cougar?<br>
<br>
The question level is good. It's exactly the stuff we need to be
worrying about right now. All the cyberspace/networking stuff can
be changed from the comfort of our desks, but to change out
antenna or radio hardware after it's been installed on a
commercial tower is a much larger headache.<br>
<br>
--Bart<br>
<br>
On 2/3/2013 9:48 PM, Rob Salsgiver wrote:<br>
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<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Ok.
Just got done doing some catch-up reading on the site…..<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Do
we have an updated “map” – even on a theoretical basis? I
see the generic ring on the site, and I know Scott Honaker
had a few potential center nodes filled in on a hand-sketch
at one time – I think mainly because it was Snohomish DEM
was looking to be one of the possible inner link sites.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">The
topic below begs for a map to better understand. At first
blush, it would seem that the higher power amateur links
would fit most nicely with any longer distance backhaul
requirements – i.e. – if we had a link that needed to go
from one end to the other North to South. Some of the lower
power U-NII – as you noted, for closer links. Once we start
penciling in some starting frequency and channel assignments
– even on a “theoretical” map, I think it will let us “see”
some of the more obvious problems and additional questions
that might need to be asked. We may re-use U-NII
frequencies on the north and south ends, as long as they
don’t have any likely hood for direct or even tropo RF
shadows or ducting / overlaps. These temperature inversions
we have can be a potentially big headache to deal with as
well. Power might need to be adaptive based on rain or
fog, or even if we start to get indications of multipath.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Let
me know if we have a better map to work with, or if you want
me to start keeping notes and throwing some working
materials together.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Do
we have any active high-sites at the moment for
experimenting?<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Sorry
if it’s too much or too many stupid questions –
unfortunately that’s what you get when my brain starts
following new rabbits down the path…<g><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Cheers,<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Rob<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext">From:</span></b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext">
PSDR [<a class="moz-txt-link-freetext" href="mailto:psdr-bounces@hamwan.org">mailto:psdr-bounces@hamwan.org</a>] <b>On Behalf Of </b>Bart
Kus<br>
<b>Sent:</b> Sunday, February 03, 2013 2:38 PM<br>
<b>To:</b> <a class="moz-txt-link-abbreviated" href="mailto:psdr@hamwan.org">psdr@hamwan.org</a><br>
<b>Subject:</b> [PSDR] Spectrum allocation for
point-to-multipoint sectorized cell sites published<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-bottom:12.0pt">Hello,<br>
<br>
I've just published the proposed PtMP spectrum usage for
HamWAN cell sites. It can be seen at the <a
moz-do-not-send="true"
href="https://www.hamwan.org/t/tiki-index.php?page=Spectrum+Allocation&structure=HamWAN">Spectrum
Allocation</a> page. Optimized for viewing @ 2560x1600.
:) The point-to-point links between cell sites will not be
allocated/planned before hand, and don't need to be published
since no users will use those links.<br>
<br>
Any objections/suggestions?<br>
<br>
My biggest worry right now is when someone wants to use the
ARC 34dBi dish to link to a sector, but the dish's frequency
response may suck that high up. The 21dBi grids seem to only
lose 3dB of gain from their peak at the very top of the
spectrum. Not awful. Have not yet measured the 27dBi grids,
but expect similar results.<br>
<br>
One very important thing this plan does is identify the center
working frequency for the sector antennas as being 5.855GHz.
That's the frequency at which radiation pattern measurements
should be made, and is the very next task on my list.<br>
<br>
--Bart<o:p></o:p></p>
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