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New 30A power supply on Elecraft order form

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Poul Erik Karlshøj (PKA)-2

Re: New 30A power supply on Elecraft order form

Interesting and very attractive.
Two questions:
1) How (acoustic) noisy is the fan, eg compared to the K3 fan?
2) Does the fan operate gradually (eg in steps like KPA500) as the temperature increases or is it either fully OFF or ON?

Poul-Erik/OZ4UN

> Den 14/04/2015 kl. 21.32 skrev Eric Swartz - WA6HHQ, Elecraft <[hidden email]>:
>
> We have now added the Powerwerx SS30DV 14.1V / 30A power supply to our order page at:
> http://www.elecraft.com/elecraft_prod_list.htm#ps
>
> It is in stock and ready to ship.
>
> This is an excellent compact switching power supply, with two APP connectors on the front and binding posts on the rear. It is a great match for the K3 K-Line and the KX3 KX-Line and accessories.
>
> Note also that new K3/100s and KXPA100s come with power cables that have APP connectors on one end for the radio, and they now have pre-crimped ring lugs on the other end for easy connection to the power supply.
>
> We use the SS30DV here at the factory, and many of us use them at our personal stations (myself included).
>
> For further information see:
>
> http://www.elecraft.com/powersupply/ss30dvps.htm
> http://www.elecraft.com/elecraft_products_page.htm
>
>
> (You may need to refresh the products and order pages to flush out old copies from your web browser cache.)
>
> 73,
>
> Eric
> elecraft.com
>
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Fred Townsend-2

Re: New 30A power supply on Elecraft order form

Yes the fan is temperature controlled and only 35-40mm square. I never hear
mine but my hearing is poor.

Fred, AE6QL

-----Original Message-----
From: Elecraft [mailto:[hidden email]] On Behalf Of Poul
Erik Karlshøj (PKA)
Sent: Tuesday, April 14, 2015 11:52 PM
To: Eric Swartz - WA6HHQ, Elecraft
Cc: Elecraft Reflector Reflector
Subject: Re: [Elecraft] New 30A power supply on Elecraft order form

Interesting and very attractive.
Two questions:
1) How (acoustic) noisy is the fan, eg compared to the K3 fan?
2) Does the fan operate gradually (eg in steps like KPA500) as the
temperature increases or is it either fully OFF or ON?

Poul-Erik/OZ4UN

> Den 14/04/2015 kl. 21.32 skrev Eric Swartz - WA6HHQ, Elecraft
<[hidden email]>:
>
> We have now added the Powerwerx SS30DV 14.1V / 30A power supply to our
order page at:
> http://www.elecraft.com/elecraft_prod_list.htm#ps
>
> It is in stock and ready to ship.
>
> This is an excellent compact switching power supply, with two APP
connectors on the front and binding posts on the rear. It is a great match
for the K3 K-Line and the KX3 KX-Line and accessories.
>
> Note also that new K3/100s and KXPA100s come with power cables that have
APP connectors on one end for the radio, and they now have pre-crimped ring
lugs on the other end for easy connection to the power supply.
>
> We use the SS30DV here at the factory, and many of us use them at our
personal stations (myself included).

>
> For further information see:
>
> http://www.elecraft.com/powersupply/ss30dvps.htm
> http://www.elecraft.com/elecraft_products_page.htm
>
>
> (You may need to refresh the products and order pages to flush out old
> copies from your web browser cache.)
>
> 73,
>
> Eric
> elecraft.com
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net Please help support this email
> list: http://www.qsl.net/donate.html Message delivered to [hidden email]

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Terry Schieler-2

Re: New 30A power supply on Elecraft order form

In reply to this post by Eric Swartz - WA6HHQ

Great choice, Eric. Now maybe you guys can negotiate with Powerwerx to provide that little power supply exclusively to Elecraft IN KIT FORM!

Sorry, couldn't resist. ;o)

73, Terry, W0FM

-----Original Message-----
From: Eric Swartz - WA6HHQ, Elecraft [mailto:[hidden email]]
Sent: Tuesday, April 14, 2015 2:32 PM
To: Elecraft Reflector Reflector
Subject: [Elecraft] New 30A power supply on Elecraft order form

We have now added the Powerwerx SS30DV 14.1V / 30A power supply to our order page at:
http://www.elecraft.com/elecraft_prod_list.htm#ps

It is in stock and ready to ship.

This is an excellent compact switching power supply, with two APP connectors on the front and binding posts on the rear. It is a great match for the K3 K-Line and the KX3 KX-Line and accessories.

Note also that new K3/100s and KXPA100s come with power cables that have APP connectors on one end for the radio, and they now have pre-crimped ring lugs on the other end for easy connection to the power supply.

We use the SS30DV here at the factory, and many of us use them at our personal stations (myself included).

For further information see:

http://www.elecraft.com/powersupply/ss30dvps.htm
http://www.elecraft.com/elecraft_products_page.htm

(You may need to refresh the products and order pages to flush out old copies from your web browser cache.)

73,

Eric
elecraft.com

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Elecraft mailing list

Re: New 30A power supply on Elecraft order form

In reply to this post by Eric Swartz - WA6HHQ

I've had this power supply for many years. It's compact, reasonably
quiet with good, solid binding posts and a couple of PowerPole outlets
(Which I wish were on the back). It also uses a standard detachable
power cord. I think this was a good choice for Elecraft to carry.

73, Doug -- K0DXV

On 4/14/2015 1:31 PM, Eric Swartz - WA6HHQ, Elecraft wrote:

> We have now added the Powerwerx SS30DV 14.1V / 30A power supply to our
> order page at:
> http://www.elecraft.com/elecraft_prod_list.htm#ps
>
> It is in stock and ready to ship.
>
> This is an excellent compact switching power supply, with two APP
> connectors on the front and binding posts on the rear. It is a great
> match for the K3 K-Line and the KX3 KX-Line and accessories.
>
> Note also that new K3/100s and KXPA100s come with power cables that
> have APP connectors on one end for the radio, and they now have
> pre-crimped ring lugs on the other end for easy connection to the
> power supply.
>
> We use the SS30DV here at the factory, and many of us use them at our
> personal stations (myself included).
>
> For further information see:
>
> http://www.elecraft.com/powersupply/ss30dvps.htm
> http://www.elecraft.com/elecraft_products_page.htm
>
>
> (You may need to refresh the products and order pages to flush out old
> copies from your web browser cache.)
>
> 73,
>
> Eric
> elecraft.com
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]
>

hhoyt

Re: New 30A power supply on Elecraft order form

In reply to this post by Eric Swartz - WA6HHQ

Hi all,
In the last Elecraft digest, regarding noise of the Powerworx switching
supply, it was posted:

>>Check out the 25 eHam reviews.
>>It's not without issues for some reviewers.
>>Mostly RFI on some HF bands and fan noise.

And notably Wayne posted:

>>results with switching supplies can vary with type of antenna feed.
>>For example, I wouldn't use a switcher if you have no choice but to
>>use an random wire leading directly from window to rig. Good
>>grounding can also help. I'm not sure if a 100% noise-free 30-amp
>>switcher has ever been designed...

As a manufacturer of a compact switcher for HF transceiver use, we have
performed a LOT of testing on this issue. A short summary of our
findings is on our website on the FAQ tab at:
https://proaudioeng.com/products/pae-kx33-ac-power-supply/

To summarize, common-mode current due to antenna system issues does
indeed play a role in apparent switching supply noise. Please read the
FAQ for more. I don't want to post it here due to it's promotional content.

Cheers & 73,

Howie - WA4PSC

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drewko

Re: New 30A power supply on Elecraft order form

In reply to this post by Fred Townsend-2

The output voltage is adjustable internally. There is a well marked
pot on the board, I forget where exactly, but you can find it easy
enough. But I guess there's not much reason to adjust if they are now
set up for 14.1 VDC.

73,
Drew
AF2Z

On Tue, 14 Apr 2015 16:01:15 -0700, you wrote:

>I suspect they put APP on the front because they have a power rail down the
>right side and put the three-way terminals on the back. According to Murphy
>the terminals will always be in the least convenient place so if you need
>them to be in front, they will be in the back.
>Incidentally I note they changed the specs in 3-2012. Was 25/30A @13.85V.
>Now its 25/28A @ 14.1V. Not a lot of difference I know.
>73
>Fred, AE6QL
>

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drewko

Re: New 30A power supply on Elecraft order form

In reply to this post by Poul Erik Karlshøj (PKA)-2

My K3 fan rattles ever so lightly from time to time, it's a little
annoying. But the Powerwerx fan noise is just the sound of the air
flow. It ramps up as ambient temperature and draw increases. I notice
it in the summer when the shack is 80-90F. In winter, with shack temps
of 50-60F, all the fans are quiet-- computer, K3 and PS.

73,
Drew
AF2Z

On Wed, 15 Apr 2015 06:51:56 +0000, you wrote:

>Interesting and very attractive.
>Two questions:
>1) How (acoustic) noisy is the fan, eg compared to the K3 fan?
>2) Does the fan operate gradually (eg in steps like KPA500) as the temperature increases or is it either fully OFF or ON?
>
>Poul-Erik/OZ4UN
>

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