<div dir="ltr">For the record, I will also contribute a YAY.</div><div class="gmail_extra"><br><br><div class="gmail_quote">On Sat, May 3, 2014 at 9:18 PM, Bart Kus <span dir="ltr"><<a href="mailto:me@bartk.us" target="_blank">me@bartk.us</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
<div>This is for the power system only. The
other items for Haystack have already been purchased, so there's
no spending request there, and no vote needed.<br>
<br>
We are expanding an existing power system. They have an existing
battery bank and full solar system. We're mostly adding some
panels.<br>
<br>
I'm not sure what the 24->12 converter is for. I don't have a
schematic of their electrical wiring.<br>
<br>
I suspect the AC->24 converter is so we can interface power
from a gasoline generator they have on-site. It's remotely
controlled, and can be engaged when the battery bank gets too
weak.<br>
<br>
I'm not sure what the MPPT controller story is. I already asked
about this.<br>
<br>
Thanks for finding the AC->24 converter cheaper. Are any other
items here available cheaper? Can you provide bottom-price URLs?
I'll work with them to understand the solar system better, make
sure we're gonna be running @ 24VDC and that we're doing things
sanely. From what I've seen of their engineering + setup, they're
competent folks. It would certainly be nice to get a better
understanding of the power design these parts will embody.<span class="HOEnZb"><font color="#888888"><br>
<br>
--Bart</font></span><div><div class="h5"><br>
<br>
<br>
On 5/3/2014 3:11 PM, Tom Hayward wrote:<br>
</div></div></div><div><div class="h5">
<blockquote type="cite">
<div dir="ltr">To get this straight, this vote is for power
systems at Haystack only. HamWAN modems, antennas, mounting
hardware, cable, etc., will need another vote. Is this right?
<div><br>
</div>
<div>I have moderate experience with solar systems, and some of
the line items don't make sense to me.</div>
<div><br>
</div>
<div>- What is the Meanwell 24V->12V converter for? The
modems run on 24V. What do we need 12V for?</div>
<div>- What is the IOTA AC->24V converter for? I thought we
didn't have AC at the site. Also, it's available from a seller
on Amazon for $150 less than quoted.</div>
<div>- Why is there no MPPT charge controller? Or batteries?<br>
<div class="gmail_extra"><br>
</div>
<div class="gmail_extra">Tom KD7LXL<br>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Sat, May 3, 2014 at 11:43 AM,
Bart Kus <span dir="ltr"><<a href="mailto:me@bartk.us" target="_blank">me@bartk.us</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000"> Hello,<br>
<br>
I'd like to propose we allow spending of up to $2k to
cover the costs of installing a photovoltaic (solar)
power system @ Haystack. The site owner has allowed
us to host a site up there as long as it doesn't
impact their power budget. The site is not wired to
any utility power, and transporting propane to it is
expensive. This is a 1-time cost, and the hardware
will remain property of the site owner. In exchange
they'll be giving us new mounting points for 2 dishes
and 2 sectors, which will have a huge impact on
coverage and extending the network. Our recurring
cost for the site will be $0/mo, which is an ideal
long-term arrangement.<br>
<br>
Here is a list of the hardware required:<br>
<br>
<br>
<span>
<table style="border-collapse:collapse;width:937pt" cellpadding="0" cellspacing="0" border="0" width="937">
<colgroup><col style="width:31pt" width="31"> <col style="width:283pt" width="283"> <col style="width:492pt" width="492"> <col style="width:51pt" width="51"> <col style="width:39pt" width="39"> <col style="width:41pt" width="41"> </colgroup><tbody>
<tr style="height:15.0pt" height="15">
<td colspan="2" style="height:15.0pt;width:314pt" height="15" width="314">Costs converting
12VDC to 24VDC</td>
<td style="width:492pt" width="492"> </td>
<td style="width:51pt" width="51"> </td>
<td style="width:39pt" width="39"> </td>
<td style="width:41pt" width="41"> </td>
</tr>
<tr style="height:15.0pt" height="15">
<td style="height:15.0pt" height="15">Item</td>
<td>Desc</td>
<td>Link</td>
<td>Quantity</td>
<td>Cost</td>
<td>Total</td>
</tr>
<tr style="height:15.0pt" height="15">
<td style="height:15.0pt" align="right" height="15">1</td>
<td style="width:283pt" width="283">24->12VDC
Meanwell<span> </span>SD-50B-12</td>
<td style="width:492pt" width="492"><a href="http://www.mouser.com/ProductDetail/Mean-Well/SD-50B-12/?qs=jVZN1Oke4Bx6867ajq9o4g==" target="_blank">http://www.mouser.com/ProductDetail/Mean-Well/SD-50B-12/?qs=jVZN1Oke4Bx6867ajq9o4g==</a></td>
<td align="right">1</td>
<td align="right"><span> </span>$51 </td>
<td align="right"><span> </span>$51 </td>
</tr>
<tr style="height:15.0pt" height="15">
<td style="height:15.0pt" align="right" height="15">2</td>
<td>SolarWorld 275 Watt Mono Module</td>
<td><a href="http://www.backwoodssolar.com/solarworld-270-watt-mono-module-1359" target="_blank">http://www.backwoodssolar.com/solarworld-270-watt-mono-module-1359</a></td>
<td align="right">2</td>
<td align="right"><span> </span>$347 </td>
<td align="right"><span> </span>$694 </td>
</tr>
<tr style="height:15.0pt" height="15">
<td style="height:15.0pt" align="right" height="15">3</td>
<td>30' Cable with Locking MC4 Plugs</td>
<td><a href="http://www.backwoodssolar.com/30-cable-w-locking-mc4-plugs" target="_blank">http://www.backwoodssolar.com/30-cable-w-locking-mc4-plugs</a></td>
<td align="right">2</td>
<td align="right"><span> </span>$30 </td>
<td align="right"><span> </span>$60 </td>
</tr>
<tr style="height:15.0pt" height="15">
<td style="height:15.0pt" align="right" height="15">4</td>
<td>Midnite AC Din Rail Mount Breaker - 15A
& 20A (15A is needed)</td>
<td><a href="http://www.backwoodssolar.com/outback-60a-ac-breaker" target="_blank">http://www.backwoodssolar.com/outback-60a-ac-breaker</a></td>
<td align="right">2</td>
<td align="right"><span> </span>$19 </td>
<td align="right"><span> </span>$38 </td>
</tr>
<tr style="height:15.0pt" height="15">
<td style="height:15.0pt" align="right" height="15">5</td>
<td>Fuse Holder and TWO 60A Class R Fuses</td>
<td><a href="http://www.backwoodssolar.com/holder-for-100-amp-fuse" target="_blank">http://www.backwoodssolar.com/holder-for-100-amp-fuse</a></td>
<td align="right">1</td>
<td align="right"><span> </span>$28 </td>
<td align="right"><span> </span>$28 </td>
</tr>
<tr style="height:15.0pt" height="15">
<td style="height:15.0pt" align="right" height="15">6</td>
<td>PV Module Ground Lug/screw/nut</td>
<td><a href="http://www.backwoodssolar.com/pv-module-ground-lug-screw-nut" target="_blank">http://www.backwoodssolar.com/pv-module-ground-lug-screw-nut</a></td>
<td align="right">2</td>
<td align="right"><span> </span>$4 </td>
<td align="right"><span> </span>$8 </td>
</tr>
<tr style="height:15.0pt" height="15">
<td style="height:15.0pt" align="right" height="15">7</td>
<td>Battery Interconnect Cable - 24" - 4/0</td>
<td><a href="http://www.backwoodssolar.com/products/batteries-accessories/battery-cables/24in-4-0-cable-with-lug-ends" target="_blank">http://www.backwoodssolar.com/products/batteries-accessories/battery-cables/24in-4-0-cable-with-lug-ends</a></td>
<td align="right">10</td>
<td align="right"><span> </span>$26 </td>
<td align="right"><span> </span>$260 </td>
</tr>
<tr style="height:15.0pt" height="15">
<td style="height:15.0pt" height="15">7a</td>
<td>Battery Interconnect Cable - 24" - 2/0</td>
<td>Local -> Pacific Power Battery (+$5/end
to crimp)</td>
<td align="right">10</td>
<td align="right"><span> </span>$10 </td>
<td align="right"><span> </span>$100 </td>
</tr>
<tr style="height:15.0pt" height="15">
<td style="height:15.0pt" align="right" height="15">8</td>
<td>IOTA Battery Charger - 24V 40A - DLS27-40</td>
<td><a href="http://www.backwoodssolar.com/iota-40a-24v-battery-charger" target="_blank">http://www.backwoodssolar.com/iota-40a-24v-battery-charger</a></td>
<td align="right">1</td>
<td align="right"><span> </span>$395 </td>
<td align="right"><span> </span>$395 </td>
</tr>
<tr style="height:15.0pt" height="15">
<td style="height:15.0pt" align="right" height="15">9</td>
<td>Tax (.086) Sultan Mailing Address</td>
<td><a href="http://dor.wa.gov/docs/forms/excstx/locsalusetx/localslsuseflyer_quarterly.pdf" target="_blank">http://dor.wa.gov/docs/forms/excstx/locsalusetx/localslsuseflyer_quarterly.pdf</a></td>
<td align="right">1</td>
<td align="right"><span> </span>$78 </td>
<td align="right"><span> </span>$78.24 </td>
</tr>
<tr style="height:15.0pt" height="15">
<td style="height:15.0pt" align="right" height="15">10</td>
<td>5% for cables/time/mounting etc</td>
<td><a href="http://3.bp.blogspot.com/-yJZJIOW6lys/Twvf9ylPUGI/AAAAAAAACdk/YEUZm-ZR-QU/s1600/strongman.jpg" target="_blank">http://3.bp.blogspot.com/-yJZJIOW6lys/Twvf9ylPUGI/AAAAAAAACdk/YEUZm-ZR-QU/s1600/strongman.jpg</a></td>
<td align="right">1</td>
<td align="right"><span> </span>$45 </td>
<td align="right"><span> </span>$45.49 </td>
</tr>
<tr style="height:15.0pt" height="15">
<td style="height:15.0pt" height="15"> </td>
<td>Grand Total</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right"><span> </span>$1,757 </td>
</tr>
</tbody>
</table>
<br>
<br>
In the $2k request, I'm also allowing ~$250 for
shipping costs. Solar panels are large. Anything
not spent will be returned to the HamWAN budget.<br>
<br>
We already have all the other hardware required to
deploy the site in-stock. Some of it is already
deployed (Haystack-S3), and some is sitting on-site
(modems, 1 dish, other sector).<br>
<br>
Our present balance is $1,291.04, so we'd be going
into debt for this deal.<br>
<br>
The other cost of this deal is recognizing the site
owner's sponsorship of HamWAN by including their
logo in presentations, and offering some man-hours
for site maintenance. The big project this summer
(aside from this solar system install and the full
HamWAN site install) will be helping with installing
a grounding system there.<br>
<br>
My vote on this deal is: YAY.<span><font color="#888888"><br>
<br>
--Bart<br>
<br>
</font></span></span> </div>
<br>
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<br>
</blockquote>
</div>
<br>
</div>
</div>
</div>
<br>
<fieldset></fieldset>
<br>
<pre>_______________________________________________
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</pre>
</blockquote>
<br>
</div></div></div>
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<br></blockquote></div><br><br clear="all"><div><br></div>-- <br><div dir="ltr">Benjamin<br></div>
</div>