[HamWAN PSDR] [Netops] VOTE: 4 12V / 119Ah AGM batteries & DC PDU for Gold Mtn

Thu Mar 22 09:17:36 PDT 2018

How’s the old bank balance these days?

Cheers,

Rob

From: PSDR [mailto:psdr-bounces at hamwan.org] On Behalf Of Bart Kus
Sent: Wednesday, March 21, 2018 11:02 PM
To: Darcy Buskermolen; Puget Sound Data Ring
Cc: netops at hamwan.org
Subject: Re: [HamWAN PSDR] [Netops] VOTE: 4 12V / 119Ah AGM batteries & DC PDU for Gold Mtn

Bank should be ~5.7kWh.  3 sectors up there and 3 NetMetal modems, as well as a 900MHz modem and a CRS125 switch.  The sectors should take about 5.5W each, the NetMetals, 900MHz and CRS125 weren't measured but let's assume 10W each there.  So that looks like 65W total to me, for a runtime of ~88 hours, or 3.7 days.  And oh yeah, the PDU draws a little too.  We can also do load-shedding manually during an outage.

--Bart

On 3/21/2018 5:41 PM, Darcy Buskermolen wrote:

My question would be, what kind of runtime will this proposal provide ?

Sent on the go, from somewhere other than here.

-------- Original message --------

From: Doug Kingston  <mailto:dpk at randomnotes.org> <dpk at randomnotes.org> 

Date: 2018-03-21 17:39 (GMT-08:00) 

To: Puget Sound Data Ring  <mailto:psdr at hamwan.org> <psdr at hamwan.org> 

Cc: netops at hamwan.org 

Subject: Re: [HamWAN PSDR] VOTE: 4 12V / 119Ah AGM batteries & DC PDU for Gold Mtn 

As a donating member and representing the ACS COMT team, I'll +1 Bart's proposal.

-Doug-

KD7DK

On Wed, Mar 21, 2018 at 12:36 PM, Bart Kus <me at bartk.us> wrote:

Hello,

As some of you have noticed, Gold Mtn has been having power issues the last couple of months.  To mitigate this, we'd like to convert it onto a DC battery bank system.  This requires 2 new item purchases:

1) A 24V battery bank to run the site for a few days in case of power outage
2) A DC PDU (Power Distribution Unit / PoE injector) to control and monitor power usage

The battery bank is $500 for 240Ah @ 24V.  The PDU is $231.03.  The total for this spending request is therefore $731.03.

Only directors may vote to approve the spend, but anyone is welcome to comment with input during the next 24 hours.

Thanks,

--Bat

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