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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Likewise - yea<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><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> PSDR [mailto:psdr-bounces@hamwan.org] <b>On Behalf Of </b>Doug Kingston<br><b>Sent:</b> Friday, June 26, 2020 3:53 PM<br><b>To:</b> Puget Sound Data Ring<br><b>Subject:</b> Re: [HamWAN PSDR] VOTE: Blyn HamWAN Site REVISION A<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal> I vote Yea.<o:p></o:p></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal>On Fri, Jun 26, 2020 at 3:29 PM Bart Kus <<a href="mailto:me@bartk.us">me@bartk.us</a>> wrote:<o:p></o:p></p></div><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in'><p class=MsoNormal>Hello,<br><br>Upon further review of the mounting hardware, I appear to have <br>"misunderestimated" the required Unistrut. My original thinking was to <br>bisect 3 10ft Unistrut sections and use 5ft pieces top+bottom to form <br>the 3 required dual-offset arms. I have since studied the Rohn 45G <br>specs, on page 12 here:<br><br><a href="https://www.rohnnet.com/files/45G_90MPH_DWG_0105_ASSYPKG.pdf" target="_blank">https://www.rohnnet.com/files/45G_90MPH_DWG_0105_ASSYPKG.pdf</a><br><br>The tower is 1.5ft wide, so a 5ft piece of strut would only have 1.75ft <br>of stick-out at the very end, which would also need to come in a few <br>inches to hold the 2" mast pipe towards the end. This is packing things <br>too tightly. We need to clear some guy wires up there, and more <br>separation in general would be better. Since we need more stick-out, we <br>can no longer simply bisect the 10ft sections, so the count of required <br>strut needs to be doubled from 3 to 6 sections. Furthermore, due to the <br>longer stick-out and the requirement for microwave gear to be steady and <br>not wobbly, we need to use more rigid Unistrut. This is available in <br>the form of back-to-back welded channels. At a 2.5ft stick-out for <br>example, the back-to-back channels exhibit 2.6x more rigidity than <br>single channels.<br><br>I have created a new Blyn spreadsheet here:<br><br><a href="https://docs.google.com/spreadsheets/d/1zUqJWOPQXt4Qv6iYbQs2cHTLbL5NOdQ5ail44FZH3Kw/edit?usp=sharing" target="_blank">https://docs.google.com/spreadsheets/d/1zUqJWOPQXt4Qv6iYbQs2cHTLbL5NOdQ5ail44FZH3Kw/edit?usp=sharing</a><br><br>Which doubles the Unistrut count and also specifies the more rigid <br>strut. The keen-eyed will also notice a change from U-bolts to 1.25" <br>pipe clamps. There is no cost difference there.<br><br>I am aware of the thread arguing for the removal of a sector from the <br>site, but I don't think the foundations of the arguments are valid, so <br>this revised proposal keeps all 3 sectors.<br><br>My vote for this revised proposal is: Yea.<br><br>--Bart<br><br><br>On 6/24/2020 11:11 AM, Bart Kus wrote:<br>> Hello,<br>><br>> I've put together the spend request to deploy HamWAN coverage to Blyn <br>> Mtn:<br>><br>> <a href="https://docs.google.com/spreadsheets/d/12lho76dJUSlXiJRy0UzYlnG66JHQeDzPMBZUxxYs3DY/edit?usp=sharing" target="_blank">https://docs.google.com/spreadsheets/d/12lho76dJUSlXiJRy0UzYlnG66JHQeDzPMBZUxxYs3DY/edit?usp=sharing</a> <br>><br>><br>> The site is at (48.006678°, -122.972668°), has a 110ft Rohn 45G tower, <br>> will provide a high speed link between SnoDEM and Victoria, as well as <br>> providing regional omnidirectional coverage. Once HamWAN is <br>> installed, my understanding is there will be some DMR repeater(s) <br>> going on the air there. There is already a corresponding dish @ <br>> SnoDEM for this site, and has been for years. We've also got <br>> confirmation that we'll be able to get a dish installed @ Triangle for <br>> the Victoria end.<br>><br>> 24-hour director voting period for this starts now.<br>><br>> My vote for this is: yea.<br>><br>> --Bart<br>><br><br>_______________________________________________<br>PSDR mailing list<br><a href="mailto:PSDR@hamwan.org" target="_blank">PSDR@hamwan.org</a><br><a href="http://mail.hamwan.net/mailman/listinfo/psdr" target="_blank">http://mail.hamwan.net/mailman/listinfo/psdr</a><o:p></o:p></p></blockquote></div></div></body></html>