[MarinTeams] Channel 7 Repeater power outage restored

Thu Jan 12 16:57:47 EST 2023

https://groups.io/static/pricing

https://groups.io/

what about using this? I'm on a bunch of groups using this and I don't think any pay a fee. 

Mike

ny6g

Michael McNevin | GM

Border Stores | Diplomat-Military | Ship Chandler

(619) 327-4777 x105 | (52) 664-231-7770

San Diego | Long Beach | HOU | OAK | BAL | NY

http://www.sandidutyfree.com 

http://www.sandidutyfree.com/ http://www.sdfvip.com http://www.sandidutyfree.com 

---- On Thu, 12 Jan 2023 13:53:08 -0800 Luke Teyssier <luke at teyssier.com> wrote ---

I’m OK with that. I’m also willing to Kickin you know $100 a year or
whatever if slack is a better solution for us

On Wed, Jan 11, 2023 at 1:37 PM Joshoa Alex <mailto:joshoa.alex at gmail.com> wrote:

> Hello
>
>
> What do you guys think of Discord for communication between club members?
>
> https://discord.com/
>
> Has clients for Windows, Mac and mobiles
>
> We can create our own "server" there, multiple chat-rooms inside,
> different user`s roles like Admin, contributor, read-only etc
>
> Very alike Slack, but does not require premium subscription for all
> those features
>
>
> Oleg
>
> KN6KJS
>
>
> On 1/10/2023 11:41 PM, Bill wrote:
> > All,
> >
> > First of all let me express my gratitude for your interest in building
> up and sustaining the K6BW repeater system!  Unfortunately there isn’t a
> cost-free solution.
> >
> > Richard, thank you for establishing the turn-on date for the West Marin
> repeater (November, 2016).  I think you submitted a picture, but our
> present email newsgroup server allows text messages only.  I have been
> watching the use of Slack by San Francisco Radio Club and looked into its
> use for our club, but ran into an expensive subscription plan, per month,
> per user.  I see that Richard Dillman may be using Slack in West Marin and
> wonder how the two clubs are able to use Slack, presumably at a cost that
> we can compare to our present free service.  If anyone knows, or knows of a
> newsgroup (other than Facebook or Google) that might encourage better
> discourse among members, please let me know.
> >
> >
> >
> > On to comments regarding emergency power.  In spite of the drama stirred
> up by the local news, our present storm system has been IHMO fairly
> benign.  There hasn’t been much damage in marin (e.g. fallen trees,
> landslides. etc.), only minimal flooding, and after many years of draught
> we are finally filling up our reservoirs.  The water table is still in need
> of further replenishment.  There has been only one power outage at San
> Pedro and the two other repeaters haven’t lost utility power even though
> they are in need of radio maintenance.   Yes, there has been quite a spell
> of rain in January and can be considered a shot over the bow, e.g. we may
> not be as lucky in the future.
> >
> >
> >
> > Concentrating on San Pedro, my thoughts are we ultimately need some sort
> of solar power generation if we intend to harden the site.  We have a
> gasoline generator there, but it can only run for something like 18 hours
> continuously.  Also, it is fully manual, has to be pull-started and we
> would have to power the radio equipment with extension cords.  There aren’t
> any gas cans to replenish gasoline, either.  Still, it is a little better
> than nothing.  We have access to 12V, 7-1/2A sealed lead-acid batteries and
> have some 15-20 charged in reserve at San Pedro.  But there isn’t any way
> at present to hook them together or to connect equipment.  At the West
> Marin site, which is fully solar powered, we have a charge controller to
> maintain battery charge and limiters for both over voltage and low-voltage
> cut off to prevent battery damage from excessive discharge.  A lot has
> happened in the last 8 years with solar technology, much of which I am not
> familiar, but the basic model of considering charging resources vs
> discharge (power demand) is as far as I know the same.
> >
> >
> >
> > At the very minimum, I suppose we could consider a battery system with a
> charge controller (they now have the limiters built-in), where we could
> specify, say 2 weeks, of repeater operation and rely on a gasoline
> generator to recharge the batteries.  That was the basis of our solar power
> assembly at West Marin.  We tallied the (continuous) receiver power needed
> and added an estimated a number of hours of active transmitter operation.
> That was multiplied by 14 days to arrive at total demand.  In West Marin,
> there is quite a bit of fog and cloud cover from proximity to the ocean.
> That, battery charge efficiency, battery life, available power from the
> sun, and a number of additional de-rating factors were added together to
> determine the ability of the solar panels to charge the batteries.  In the
> case of San Pedro, we also are supporting the AREDN broadband network.  We
> have 7 dishes and two routers at present, and expect that complement to
> grow.  The dishes don’t take a lot of power, but the demand is continuous
> and adds up quickly.  At any rate, all of this can be listed in a
> spreadsheet and become a design model that will indicate the needed battery
> capacity, and the solar charge current and become a basis to measure how
> the system will perform and for how long.  Unfortunately, we have very
> limited access to our example West Marin repeater and have not been able to
> compare the design model with actual use.  Suffice to say, the repeater has
> been humming along for the last 6 years without issue.  Perhaps, thankfully
> it has not had a lot of use as with all the de-rating, the 4 250AH AGM
> batteries are barely sufficient.
> >
> >
> >
> > A kill-o-watt monitor might be a good starting point at San Pedro,
> although repeater use has been practically only that of the ½ hour Monday
> night net.  It wouldn’t hurt to update the spreadsheet developed for West
> Marin to incorporate the AREDN network and arrive at a base line to
> estimate battery reserve.  There is also an emergency lighting circuit at
> San Pedro that we should consider updating.  It presently uses 36 volt (!)
> incandescent bulbs which could be switched to something like +12V LED bulbs
> (or what is commonly available for boat lighting).  Also, there is a HF
> station with room for good antennas outdoors.
> >
> >
> >
> > If you are interested in the project, perhaps the first thing to do is
> haul out the checkbook and send the club your $25 associate membership
> dues.  Or more!  There is a lot of possibility at the site, and we need
> your help, both physical and monetary.
> >
> >
> >
> > And we are still hunting around for a club meeting place.
> >
> >
> >
> > 73 de Bill, AB6MT
> >
> >
> >
> >
> >
> >
> >
> >    _____
> >
> > From: Harlen [mailto:mailto:hmallis at comcast.net]
> > Sent: Tuesday, January 10, 2023 8:56 PM
> > To: George Shea
> > Cc: Bill; mailto:marinteams at mailman.qth.net
> > Subject: Re: [MarinTeams] Channel 7 Repeater power outage restored
> >
> >
> >
> > Agreed
> >
> > Bill probably knows or if not, we can put a kill a watt on there and see
> what it uses over 24 hours or even a week if usage is not consistent
> >
> > Out
> >
> >
> >
> >
> >
> > On Jan 10, 2023, at 7:21 PM, George Shea <mailto:geoirishbox at yahoo.com> wrote:
> >
> > 
> >
> > At this time, in order to analyze the issue would be to determine how
> many amp hours are needed to keep the repeaters going given the kinds of
> transmission outages likely to occur. How many amps does the current
> repeater draw? In use or in standbye? Then, a decision for a
> generator/inverter that is either autostart or internet start might be
> considered is the money is there. Solar is also being used quite well. Show
> me the money.
> >
> >
> >
> > Otherwise, end of discussion buy new batteries, I hope lithium.
> >
> >
> >
> > I am replacing my "house" batteries on my sailboat with lithium bought
> through home depot.
> >
> >
> >
> > George J. Shea
> >
> >
> >
> > 415-999-9358
> >
> >
> >
> >
> >
> > On Tuesday, January 10, 2023 at 05:43:29 PM PST, Harlen <
> mailto:hmallis at comcast.net> wrote:
> >
> >
> >
> >
> >
> > Charging would be done either through a generator auto start, which they
> do make.
> >
> >
> >
> > Or a C, which is the problem as it goes out then what?
> >
> >
> >
> > It’s nice having multiple systems so you have a little bit more of a
> failsafe set up
> >
> >
> >
> > Question, depends on how important the scenario is so you know how much
> money to throw at the solution
> >
> >
> >
> >
> >
> > On Jan 10, 2023, at 4:32 PM, George Shea <mailto:geoirishbox at yahoo.com> wrote:
> >
> > 
> >
> > LFPs are lighter, they deep cycle, most have internal controllers to
> avoid over/under charging, can get at least 4,000 recycles, NO MAINTENANCE,
> still work fine way past the 50% discharge limitation all other batteries
> etc. A little expensive, but getting cheaper, especially if stored inside.
> Maintenance free other than charging, and easily convert to solar when
> available.
> >
> >
> >
> > I suggest solar unneeded if reliable source of power to charger keeping
> batteries topped up.
> >
> >
> >
> > George J. Shea
> >
> >
> >
> >
> >
> > On Tuesday, January 10, 2023 at 04:13:39 PM PST, Harlen <
> mailto:hmallis at comcast.net> wrote:
> >
> >
> >
> >
> >
> > Agreed and there’s some maintenance on them too.
> >
> >
> >
> > At this point other than the expense, LFP batteries are so much better
> of a long-term solution.
> >
> >
> >
> >
> >
> > On Jan 10, 2023, at 3:48 PM, George Shea <mailto:geoirishbox at yahoo.com> wrote:
> >
> > 
> >
> >
> >
> > AGMS that are recycled many times (as in solar installations) easily die
> after four years especially in cold weather.
> >
> >
> >
> > George J. Shea
> >
> >
> >
> >
> >
> > On Tuesday, January 10, 2023 at 10:17:24 AM PST, Bill <mailto:wbs at hbco2.com>
> wrote:
> >
> >
> >
> >
> >
> > We have four AGM batteries at the site in West Marin.  It has been solar
> powered from the beginning and has been running uninterrupted for 4 years,
> I believe.  Will have to check, can't count that high..
> >
> >
> > -----Original Message-----
> > From: Harlen [mailto:mailto:hmallis at comcast.net]
> > Sent: Tuesday, January 10, 2023 9:57 AM
> > To: mailto:wbs at hbco2.com
> > Cc: mailto:marinteams at mailman.qth.net
> > Subject: Re: [MarinTeams] Channel 7 Repeater power outage restored
> >
> > That’s tough with all the gray weather we’ve had two you’re talking
> about a lot of batteries. It’s the storage that makes all the systems work.
> >
> >> On Jan 10, 2023, at 9:50 AM, Bill <mailto:wbs at hbco2.com> wrote:
> >>
> >> Power is back on at San Pedro.  All of Santa Venetia was knocked out
> during
> >> last night's storm, but apparently has been restored.
> >> Would be nice to have solar backup!
> >> 73 de Bill, AB6MT
> >>
> >> ______________________________________________________________
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> >>
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