(K3) 12VDC Current Mod Kit Received

[Lou Voerman W2ROW]

I just received this kit which increases the current available at the 12V DC Out jack on the K3 to drive a P3 with P3SVGA. The kit consists of replacing a surface mount diode, a through hole fuse and through hole choke. Elecraft sent me this kit without my asking.   :)

I have not installed it yet but the diode is accessed by removing the bottom panel. The fuse and RFC replacement require removing the top cover, fan assembly and the KPA3 module (optional but recommended). The new fuse is rated at 1.1 amp.

I expect to do the install tomorrow and will report back then.

Lou W2ROW

[gm3sek]

Ron D'Eau Claire wrote:
>Yes, it's just three screws to get the KPA3 module out and makes it
>much, much easier to reach the parts without damaging anything,
>especially if you have the KAT3 installed.
>

Even with the KAT3 installed, there shouldn't be any difficulty in
reaching the RFC and the "fuse" without removing the KPA3 or even
unplugging the fuse panel.

Medical forceps or hemostats are very useful for this kind of work, to
reach where fingers won't go. They give much better control than either
pliers or tweezers, and are also very good for handling TMP connectors.


--

73 from Ian GM3SEK
http://www.ifwtech.co.uk/g3sek
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[Lou Voerman W2ROW]

Lou Voerman W2ROW wrote

I just received this kit which increases the current available at the 12V DC Out jack on the K3 to drive a P3 with P3SVGA. The kit consists of replacing a surface mount diode, a through hole fuse and through hole choke. Elecraft sent me this kit without my asking.   :)

I installed it in about 30 minutes and did end up removing the KPA3 module. I suspect it would have taken me longer if I had tried to get at the components while leaving the KPA3 in place. All works well. It might be nice if Elecraft provided a stick on label with the 1A limit to cover the 500mA label on the rear panel.

Lou  W2ROW

[Bill Swindell - K1LED]

Thanks for the time information. I have my kit and was not sure if/when I would install it. I have a relay box that externally powers the P3 directly from my 13.8V power supply.

[Bill Swindell - K1LED]

Well, I was bored today so I installed the mod. The only problem with the installation was getting the holes cleaned out after removing the choke & circuit breaker. My solder sucker finally did the job. I then undid my relay box from the power leads. I hooked everything up and the mod works fine. Thanks to Elecraft for providing this at no charge.

[N5NA]

Is the mod kit something that needs to be requested from Elecraft or is it being sent to P3 owners?

73, Alan N5NA

[Bill Swindell - K1LED]

It was sent to P3 SVGA adapter purchasers. If you don't have the SVGA adapter, you don't need it.

[Bill Swindell - K1LED]

It was sent to P3 SVGA adapter purchasers. If you don't have the SVGA
adapter, you don't need it.

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[Bruce Beford-2]

It is being sent to P3 owners who also ordered the P3SVGA. It is the
increased current drain of the P3SVGA board that makes this mod
desirable/required.

I installed mine today, and it works fine. (did it without removing the
KPA3, but many will want to do that.

One issue with the instructions is that they have you remove the fan panel,
or the blank panel if you don't have the KPA3. What is not taken into
consideration is if you also have the K144XV installed, with it's ANT3
connection on the fan panel. The instructions do not tell you to remove the
ANT3 cable/connector. I was able to do the mod (carefully) without
completely removing the fan panel, just loosening the screws. The
instructions also never tell you to re-install the bottom rear panel, but I
imagine most ops will remember to do that...
73,
Bruce, N1RX

> Is the mod kit something that needs to be requested from Elecraft or is it
> being sent to P3 owners?

> 73, Alan N5NA



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[Bruce Beford-2]

> The instructions do not tell you to remove the
> ANT3 cable/connector.

My mistake. One of the pictures has a notation to remove this connector. I
sometimes tend to just go by the check-box steps, without looking at the
pictures. I missed this notation when I did mine. The instructions are now
available for download here:

http://www.elecraft.com/manual/12VDC%20Current%20Modification.pdf

73,
Bruce, N1RX


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[vk4tux]

It is being sent automatically to P3SVGA customers. The parts have been
described and the procedure pdf link given in earlier Elecraft posts.

Adrian ... vk4tux

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of N5NA
Sent: Monday, 23 April 2012 5:39 AM
To: [hidden email]
Subject: Re: [Elecraft] (K3) 12VDC Current Mod Kit Received

Is the mod kit something that needs to be requested from Elecraft or is it
being sent to P3 owners?

73, Alan N5NA

--
View this message in context:
http://elecraft.365791.n2.nabble.com/K3-12VDC-Current-Mod-Kit-Received-tp748
2259p7490155.html
Sent from the Elecraft mailing list archive at Nabble.com.
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[Mike Harris]

There are many uses for that aux supply.  1A capability is most useful.

Regards,

Mike VP8NO

On 22/04/2012 17:23, Bill Swindell - K1LED wrote:
> It was sent to P3 SVGA adapter purchasers. If you don't have the SVGA
> adapter, you don't need it.
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[N5NA]

Thanks.  I have the P3SVGA but haven't seen the mod kit.  I must have missed the previous post with the PDF link.

I'll contact Elecraft if nothing shows up in the mail soon.

73, Alan N5NA

vk4tux wrote

It is being sent automatically to P3SVGA customers. The parts have been
described and the procedure pdf link given in earlier Elecraft posts.

Adrian ... vk4tux

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of N5NA
Sent: Monday, 23 April 2012 5:39 AM
To: [hidden email]
Subject: Re: [Elecraft] (K3) 12VDC Current Mod Kit Received

Is the mod kit something that needs to be requested from Elecraft or is it
being sent to P3 owners?

73, Alan N5NA

--

[Eric Swartz - WA6HHQ]

And the mod kit is on the Parts and Mod Kits order page at the top of the K3 Section.

http://www.elecraft.com/order_form_parts.htm#K3%20Parts

73,

Eric

www.elecraft.com
_..._



On Apr 22, 2012, at 2:12 PM, "Ron D'Eau Claire" <[hidden email]> wrote:

> Those who do not have the P3 but who wish to raise the current limit on the
> 12VDC OUT connector can order it from Elecraft. Order K312MDKT.
>
> Ron AC7AC
>
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