[HamWAN PSDR] VOTE: $2k budget for Haystack site hardware

[Tom Hayward]

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?

I have moderate experience with solar systems, and some of the line items
don't make sense to me.

- What is the Meanwell 24V->12V converter for? The modems run on 24V. What
do we need 12V for?
- 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.
- Why is there no MPPT charge controller? Or batteries?

Tom KD7LXL

On Sat, May 3, 2014 at 11:43 AM, Bart Kus <me at bartk.us> wrote:

>  Hello,
>
> 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.
>
> Here is a list of the hardware required:
>
>
>      Costs converting 12VDC to 24VDC          Item Desc Link Quantity Cost
> Total  1 24->12VDC Meanwell  SD-50B-12
> http://www.mouser.com/ProductDetail/Mean-Well/SD-50B-12/?qs=jVZN1Oke4Bx6867ajq9o4g==
> 1  $51  $51  2 SolarWorld 275 Watt Mono Module
> http://www.backwoodssolar.com/solarworld-270-watt-mono-module-1359 2  $347
>  $694  3 30' Cable with Locking MC4 Plugs
> http://www.backwoodssolar.com/30-cable-w-locking-mc4-plugs 2  $30  $60  4 Midnite
> AC Din Rail Mount Breaker - 15A & 20A (15A is needed)
> http://www.backwoodssolar.com/outback-60a-ac-breaker 2  $19  $38  5 Fuse
> Holder and TWO 60A Class R Fuses
> http://www.backwoodssolar.com/holder-for-100-amp-fuse 1  $28  $28  6 PV
> Module Ground Lug/screw/nut
> http://www.backwoodssolar.com/pv-module-ground-lug-screw-nut 2  $4  $8  7 Battery
> Interconnect Cable - 24" - 4/0
> http://www.backwoodssolar.com/products/batteries-accessories/battery-cables/24in-4-0-cable-with-lug-ends
> 10  $26  $260  7a Battery Interconnect Cable - 24" - 2/0 Local -> Pacific
> Power Battery (+$5/end to crimp) 10  $10  $100  8 IOTA Battery Charger -
> 24V 40A - DLS27-40
> http://www.backwoodssolar.com/iota-40a-24v-battery-charger 1  $395  $395
> 9 Tax (.086) Sultan Mailing Address
> http://dor.wa.gov/docs/forms/excstx/locsalusetx/localslsuseflyer_quarterly.pdf
> 1  $78  $78.24  10 5% for cables/time/mounting etc
> http://3.bp.blogspot.com/-yJZJIOW6lys/Twvf9ylPUGI/AAAAAAAACdk/YEUZm-ZR-QU/s1600/strongman.jpg
> 1  $45  $45.49    Grand Total        $1,757
>
> 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.
>
> 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).
>
> Our present balance is $1,291.04, so we'd be going into debt for this deal.
>
> 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.
>
> My vote on this deal is: YAY.
>
> --Bart
>
>
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>
>
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