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More battery power info

 

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Images attached of Jerry's setup. 

Sound like you'r charging setup is working just fine.  I usuallly let the charge taper down to 1-2 amps. I actually have mine on
a timer.  On at 8am and off at 9p.  Once the battery is charged up to the set voltage on your charger it won't take anymore
so if you adjust the charger (PS) to a good value you can't overcharge. Putting on the timer takes it all off line
when you go to bed so you don't have to worry about it during the night.


Yes...10 amp charger needs at least a 20 amp diode.  Even at 10 amps a 20 amp diode will get warm. I use 40 and 50amp
for I have plenty of wiggle room.  Check ebay for solar blocking diodes.  diode you show is fine.  Most are rated for at least 50volts so that's not an issue.

Have fun.

Jerry



-------- Forwarded Message --------
Subject: Another pic
Date: Thu, 23 Nov 2023 08:25:38 -0900
From: JERRY CURRY <jercurry@...>
To: Anthony VidPro <vidpro@...>


This battery powers my 500w SGC amp.


IMG_2678.jpeg
Attached Message Part
Attached Message Part
IMG_2677.mov
IMG_2677.mov
IMG_2675.jpeg
IMG_2674.jpeg

Re: Repeater Summary

 

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Anthony Burokas
General Class Ham (KB3DVS)
VP: Plano Amateur Radio Klub –
25-year video producer — IEBA.com


On 3/5/25 1:01 PM, Anthony KB3DVS wrote:

A suggestion I had made a bit ago was to use a lead acid or AGM battery in between the AC supply and the radios.

I worked with a ham in Alaska, who manages several repeaters and remote tower sites and this is how he does it, for simplicity and reliability.

The AC is on a timer, to be able to charge the battery within a few hours.

All the radio and compute runs off fused DC taps, (and voltage converters) so that if AC dies, the DC is still there and he's got 100+ AH batteries to carry it for days. He's got a bit of compute to make an announcement / send a message if AC is lost. There's diodes on the leads to the batteries to prevent any backflow form the battery to the AC power supply.

The DC can directly power multiple radios / compute at the same time as opposed to needing multiple AC adapters.

It's also cheaper than a similarly sized UPS solution that converts the DC battery back to AC that is then converted back to DC for the radios and compute.

Just an idea to consider if we're re-jiggering the power solution for a rack of radios and compute.

Anthony Burokas
General Class Ham (KB3DVS)
VP: Plano Amateur Radio Klub –
25-year video producer — IEBA.com


On 3/5/25 11:40 AM, Miranda Schwarck KE5YZP via groups.io wrote:
Tim,?
?
If we have someone willing to donate parts then I'll take that over a paid replacement.? ?With both transmitters enabled transmitting the time we were at 30 amps, if all radios were transmitting we might get to 45 amps since APRS doesn't transmit, or not often anyway.? ?This means we should be able to take those two supplies plus the one still there and move the site back to permanent hardware changing up the power distribution just a bit.?
?
We also should determine if the D-Star rack would benefit better from those supplies than the FM rack due to form factor or loading issues, as I didn't have a key I was unable to do any diagnostics on it.?
?
Miranda
Re: Repeater Summary

 

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A suggestion I had made a bit ago was to use a lead acid or AGM battery in between the AC supply and the radios.

I worked with a ham in Alaska, who manages several repeaters and remote tower sites and this is how he does it, for simplicity and reliability.

The AC is on a timer, to be able to charge the battery within a few hours.

All the radio and compute runs off fused DC taps, (and voltage converters) so that if AC dies, the DC is still there and he's got 100+ AH batteries to carry it for days. He's got a bit of compute to make an announcement / send a message if AC is lost. There's diodes on the leads to the batteries to prevent any backflow form the battery to the AC power supply.

The DC can directly power multiple radios / compute at the same time as opposed to needing multiple AC adapters.

It's also cheaper than a similarly sized UPS solution that converts the DC battery back to AC that is then converted back to DC for the radios and compute.

Just an idea to consider if we're re-jiggering the power solution for a rack of radios and compute.

Anthony Burokas
General Class Ham (KB3DVS)
VP: Plano Amateur Radio Klub –
25-year video producer — IEBA.com


On 3/5/25 11:40 AM, Miranda Schwarck KE5YZP via groups.io wrote:

Tim,?
?
If we have someone willing to donate parts then I'll take that over a paid replacement.? ?With both transmitters enabled transmitting the time we were at 30 amps, if all radios were transmitting we might get to 45 amps since APRS doesn't transmit, or not often anyway.? ?This means we should be able to take those two supplies plus the one still there and move the site back to permanent hardware changing up the power distribution just a bit.?
?
We also should determine if the D-Star rack would benefit better from those supplies than the FM rack due to form factor or loading issues, as I didn't have a key I was unable to do any diagnostics on it.?
?
Miranda
Re: Repeater Summary

 

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Thank you

?

From: [email protected] <[email protected]> On Behalf Of Miranda Schwarck KE5YZP via groups.io
Sent: Wednesday, March 5, 2025 11:41
To: [email protected]
Subject: Re: [K5PRK-Board] Repeater Summary

?

Tim,?

?

If we have someone willing to donate parts then I'll take that over a paid replacement.? ?With both transmitters enabled transmitting the time we were at 30 amps, if all radios were transmitting we might get to 45 amps since APRS doesn't transmit, or not often anyway.? ?This means we should be able to take those two supplies plus the one still there and move the site back to permanent hardware changing up the power distribution just a bit.?

?

We also should determine if the D-Star rack would benefit better from those supplies than the FM rack due to form factor or loading issues, as I didn't have a key I was unable to do any diagnostics on it.?

?

Miranda
Re: Repeater Summary

 

Tim,?
?
If we have someone willing to donate parts then I'll take that over a paid replacement.? ?With both transmitters enabled transmitting the time we were at 30 amps, if all radios were transmitting we might get to 45 amps since APRS doesn't transmit, or not often anyway.? ?This means we should be able to take those two supplies plus the one still there and move the site back to permanent hardware changing up the power distribution just a bit.?
?
We also should determine if the D-Star rack would benefit better from those supplies than the FM rack due to form factor or loading issues, as I didn't have a key I was unable to do any diagnostics on it.?
?
Miranda
Re: Repeater Summary

 

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Miranda,

?

Thank you for getting us back on the air.

?

Bob K5MVZ has a rack mount with 2-30 amp Astron switching supplies available for donation.

I think he and Kip are getting together on Friday to try them out.? Your call though, to use them or replace them as you mentioned below.

?

Tim

?

?

?

From: [email protected] <[email protected]> On Behalf Of Miranda Schwarck KE5YZP via groups.io
Sent: Wednesday, March 5, 2025 11:24
To: [email protected]
Subject: [K5PRK-Board] Repeater Summary

?

Hi Everyone,?

?

I'm back in town and was ready to fix the system as of last night however Allen had no techs available so it waited until this morning.? ?

Here's the repair summary.? (minus D-Star)

?

It appears that any power supply turned on was affected, a short diagnosis showed arcing behavior in the back of one supply, meaning our surge came in via electrical path, this is further shown by the one PSU that was off surviving.?

I have replaced all the power supplies with a single power supply, this supply has a 6 way fused breakout using as much existing cabling as possible to prevent having to modify it again when proper power supplies are reinstalled.?

While I have not managed to test the APRS or packet systems yet those radios are on and checking SWR on the VHF antenna showed no issues with expected wattage on the path.?

?

Does anyone have questions for me?? ?I'll look to be replacing these supplies with identical versions if they still exist otherwise we can look at a different solution for the permanent fix.?

Fred has also been notified the site is operational as Plano will want to know, he was also unaware that I didn't have a key for the D-Star cabinet, when I get access we can resolve power on that system as well.?

?

Miranda
Repeater Summary

 

Hi Everyone,?
?
I'm back in town and was ready to fix the system as of last night however Allen had no techs available so it waited until this morning.? ?
Here's the repair summary.? (minus D-Star)
?
It appears that any power supply turned on was affected, a short diagnosis showed arcing behavior in the back of one supply, meaning our surge came in via electrical path, this is further shown by the one PSU that was off surviving.?
I have replaced all the power supplies with a single power supply, this supply has a 6 way fused breakout using as much existing cabling as possible to prevent having to modify it again when proper power supplies are reinstalled.?
While I have not managed to test the APRS or packet systems yet those radios are on and checking SWR on the VHF antenna showed no issues with expected wattage on the path.?
?
Does anyone have questions for me?? ?I'll look to be replacing these supplies with identical versions if they still exist otherwise we can look at a different solution for the permanent fix.?
Fred has also been notified the site is operational as Plano will want to know, he was also unaware that I didn't have a key for the D-Star cabinet, when I get access we can resolve power on that system as well.?
?
Miranda
Re: Repeaters

 

I’m not sure what’s there - just thought I remember hearing it was a remote access APC UPS. I did look today and it appears APC only gives a 10 day window from the day of the event to file a claim.

Rob
K5WFR
Re: Repeaters

 

Rob,??
?
I'll have to check if that applies for these units, they use to have a $25,000 warranty if it came through the device.? The issue with this is they will see the air component, all the radios and antennas and probably not cover it since your average servers don't have a roof presence.?
?
Do we know when this UPS was registered?? That would be part of the information APC would need when starting a claim, we can at least query them and see what they say.?
?
Miranda?
Re: Repeatera

 

Looks like my previous email got lost.?
?
Kip said that we should have insurance for this kind of thing, can we verify if that's still active and what the limits and deductibles are?? ?This may prove to be very costly if we have to start replacing repeater modules and anything in the D-Star system. That number just goes up in there's antenna damage on the tower (for example a direct strike happened).
?
I'll be getting back in to Dallas tonight at around 8 and will gather some parts to see if I can bring the system up enough to test it further.? ?We know at least the power supplies are damaged, hopefully this will get us a good indicator on the rest of the equipment and we can at least be partially up.?
?
I do know that Plano has requested an update for readiness and that Fred is fielding that one, I'll be updating Fred on the repair progress as I have it as well.?
?
Miranda?
Re: Repeatera

 

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We probably could reach into the already allocated repeater funds, but once we know the extent of the damage and what repairs are going to cost, we can determine the way forward.? May need to call an emergency board meeting, prior to the general meeting on the 17th, and bring a full report and potential request for more money to that meeting.

?

Tim

?

?

From: [email protected] <[email protected]> On Behalf Of Mikeltharp KG5TJF via groups.io
Sent: Tuesday, March 4, 2025 17:03
To: [email protected]
Subject: Re: [K5PRK-Board] Repeatera

?

We do have a $4,000 contingency fund.? I'm just not sure how we approve and disburse funds when needed.? We should probably think about that once Miranda has a cost estimate.
Re: Currently expired members - as of 12/31/24

 

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Francis (Dan) Daniels health is in decline and probably won’t be renewing.

Dennis Scully lives down the street from me.? I’ll encourage (hector) him to re-up.

?

Tim

?

?

From: [email protected] <[email protected]> On Behalf Of B. J. Watkins via groups.io
Sent: Tuesday, March 4, 2025 17:11
To: [email protected]
Subject: [K5PRK-Board] Currently expired members - as of 12/31/24

?

KF5BSR

2024-12-31

N5BGZ

2024-12-31

KE5VCT

2024-12-31

K5MBL

2024-12-31

N4CD

2024-12-31

KE5WND

2024-12-31

W5KKQ

2024-12-31

AF5QY

2024-12-31

N5AB

2024-12-31

K5OSX

2024-12-31

K5MTW

2024-12-31

KD5TZA

2024-12-31

KI5WXB

2024-12-31

N5SDW

2024-12-31

KE5VBO

2024-12-31

KI5ZFB

2024-12-31

KT5P

2024-12-31

K5CVA

2024-12-31

KJ5EUM

2024-12-31

KJ5EVU

2024-12-31

KG5KMR

2024-12-31

Currently expired members - as of 12/31/24

 

KF5BSR 2024-12-31
N5BGZ 2024-12-31
KE5VCT 2024-12-31
K5MBL 2024-12-31
N4CD 2024-12-31
KE5WND 2024-12-31
W5KKQ 2024-12-31
AF5QY 2024-12-31
N5AB 2024-12-31
K5OSX 2024-12-31
K5MTW 2024-12-31
KD5TZA 2024-12-31
KI5WXB 2024-12-31
N5SDW 2024-12-31
KE5VBO 2024-12-31
KI5ZFB 2024-12-31
KT5P 2024-12-31
K5CVA 2024-12-31
KJ5EUM 2024-12-31
KJ5EVU 2024-12-31
KG5KMR 2024-12-31

Re: Repeatera

 

We do have a $4,000 contingency fund.? I'm just not sure how we approve and disburse funds when needed.? We should probably think about that once Miranda has a cost estimate.
Re: FW: 147.18/444.25

 

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Kip, Bob,
Please coordinate picking up the power supplies.?

Thank you Bob and Kip,

Tim

On Mar 4, 2025, at 14:28, AE5IB (Kip) via groups.io <kiptonm@...> wrote:

?
Yes. I would like to get it for testing on Friday.?

Kip

On Tue, Mar 4, 2025, 1:52 PM Tim Johnson K5TCJ via <k5tcj=[email protected]> wrote:

See below.? Is this something we can use?

?

Tim

?

?

From: k5mvz@... <k5mvz@...>
Sent: Tuesday, March 4, 2025 13:40
To: Tim Johnson <k5tcj@...>
Subject: 147.18/444.25

?

Tim-

?

How many power supplies are we talking about??

?

I have a rack mount with 2-30 amp Astron switching supplies available for donation..? The Rack mount frame needs some straightening.? 1 corner is bent.

?

-Bob

K5MVZ
Re: FW: 147.18/444.25

 

Yes. I would like to get it for testing on Friday.?

Kip

On Tue, Mar 4, 2025, 1:52 PM Tim Johnson K5TCJ via <k5tcj=[email protected]> wrote:

See below.? Is this something we can use?

?

Tim

?

?

From: k5mvz@... <k5mvz@...>
Sent: Tuesday, March 4, 2025 13:40
To: Tim Johnson <k5tcj@...>
Subject: 147.18/444.25

?

Tim-

?

How many power supplies are we talking about??

?

I have a rack mount with 2-30 amp Astron switching supplies available for donation..? The Rack mount frame needs some straightening.? 1 corner is bent.

?

-Bob

K5MVZ
Re: Repeaters

 

Isn’t the UPS APCC? If so, they typically have a protection policy.

Rob
K5WFR
Re: FW: 147.18/444.25

 

I could take a couple

--Lonnie Webb,?(KG5WHQ)
? RadioEngine, OnComics on Rumble, YouTube and Twitter
FW: 147.18/444.25

 

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See below.? Is this something we can use?

?

Tim

?

?

From: k5mvz@... <k5mvz@...>
Sent: Tuesday, March 4, 2025 13:40
To: Tim Johnson <k5tcj@...>
Subject: 147.18/444.25

?

Tim-

?

How many power supplies are we talking about??

?

I have a rack mount with 2-30 amp Astron switching supplies available for donation..? The Rack mount frame needs some straightening.? 1 corner is bent.

?

-Bob

K5MVZ
Re: Repeaters

 

Hi Anthony,
?
That's correct, we do, Kip is also thinking we have insurance for this type of thing, can we confirm we have it and what the limits are?
?
This could be quite expensive if we get in to repeater modules and controllers.? I just happen to be at an icom dealer and can pick up a module before heading back to Dallas today, I have lots of UHF modules so only need the VHF.
?
Miranda?
?
?
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