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K3: Some advice on mods

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Phil Westover

K3: Some advice on mods

I just received the following mod kits from Elecraft:

KPA3 12 v Sense Modification (1N4148)
K3 Hardware AGC Threshold Mod Kit
K3 Audio Line Out Mod Kit
K3 DSP Upgrade Swap
K3 I/O Buffer Mod Kit
K3 VFO Tuning Noise Filter Kit
K3 Remote I/O Board Upgrade
K3 Synth Stiffener

Question: Even though all of these are relatively simple (I've got lots of successful experience with PCB work/rework), do any of you have a recommended strategy for performing these mods? (i.e., just jump in and do them all at once? do them one at a time, checking radio function each time? doing certain ones together, then checking operation before doing others? etc.)

73,
Phil, WA7URV K3 #1206

w0mu

Re: K3: Some advice on mods

I think I would do them all at once, opposed to doing one, rebuilding
the radio, tearing it apart etc.

Mike W0MU

J6/W0MU November 21 - December 1 2011 CQ WW DX CW
W0MU-1 CC Cluster w0mu.net

On 10/14/2011 5:59 PM, Phil Westover wrote:

> I just received the following mod kits from Elecraft:
>
> KPA3 12 v Sense Modification (1N4148)
> K3 Hardware AGC Threshold Mod Kit
> K3 Audio Line Out Mod Kit
> K3 DSP Upgrade Swap
> K3 I/O Buffer Mod Kit
> K3 VFO Tuning Noise Filter Kit
> K3 Remote I/O Board Upgrade
> K3 Synth Stiffener
>
> Question: Even though all of these are relatively simple (I've got lots of
> successful experience with PCB work/rework), do any of you have a
> recommended strategy for performing these mods? (i.e., just jump in and do
> them all at once? do them one at a time, checking radio function each time?
> doing certain ones together, then checking operation before doing others?
> etc.)
>
> 73,
> Phil, WA7URV K3 #1206
>
> --
> View this message in context: http://elecraft.365791.n2.nabble.com/K3-Some-advice-on-mods-tp6894406p6894406.html
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Scott-2

Re: K3: Some advice on mods

In reply to this post by Phil Westover

Phil,
I'd do the board/"plug in" mods first, then any soldering mods last if
possible. I'd only want to crack the case once, do the mods, close it
back up, then opcheck. The board mods should go very easily; the
soldering mods will depend on your skill/experience with a soldering
iron. Don't forget the trusty DMM.

Scott
KF5MHS

On 10/14/2011 6:59 PM, Phil Westover wrote:

Johnny Siu

Some advice on mods

In reply to this post by Phil Westover

Hello Phil,

I would do the mods according the related portion of PCB, e.g.

K3 Hardware AGC Threshold Mod Kit
K3 Audio Line Out Mod Kit +K3 Remote I/O Board Upgrade
K3 I/O Buffer Mod Kit
K3 VFO Tuning Noise Filter Kit

All the above are in the RF board. After that, do the DSP swap which is on front panel.

KPA3 12 v Sense Modification (1N4148) could be done at last.

TNX & 73,

Johnny VR2XMC

________________________________
從︰ Phil Westover <[hidden email]>
收件人︰ [hidden email]
傳送日期︰ 2011年10月15日 (週六) 7:59 AM
主題︰ [Elecraft] K3: Some advice on mods

I just received the following mod kits from Elecraft:

KPA3 12 v Sense Modification (1N4148)
K3 Hardware AGC Threshold Mod Kit
K3 Audio Line Out Mod Kit
K3 DSP Upgrade Swap
K3 I/O Buffer Mod Kit
K3 VFO Tuning Noise Filter Kit
K3 Remote I/O Board Upgrade
K3 Synth Stiffener

Question: Even though all of these are relatively simple (I've got lots of
successful experience with PCB work/rework), do any of you have a
recommended strategy for performing these mods? (i.e., just jump in and do
them all at once? do them one at a time, checking radio function each time?
doing certain ones together, then checking operation before doing others?
etc.)

73,
Phil, WA7URV K3 #1206
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Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

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Bob K6UJ

Re: Some advice on mods

I agree with Johnny, this is the best work flow for these mods.

Bob
K6UJ

On Oct 14, 2011, at 5:45 PM, Johnny Siu wrote:

> Hello Phil,
>
> I would do the mods according the related portion of PCB, e.g.
>
> K3 Hardware AGC Threshold Mod Kit
> K3 Audio Line Out Mod Kit +K3 Remote I/O Board Upgrade
> K3 I/O Buffer Mod Kit
> K3 VFO Tuning Noise Filter Kit
>
> All the above are in the RF board. After that, do the DSP swap which is on front panel.
>
> KPA3 12 v Sense Modification (1N4148) could be done at last.
>
> TNX & 73,
>
>
> Johnny VR2XMC
>
>
> ________________________________
> 從︰ Phil Westover <[hidden email]>
> 收件人︰ [hidden email]
> 傳送日期︰ 2011年10月15日 (週六) 7:59 AM
> 主題︰ [Elecraft] K3: Some advice on mods
>
> I just received the following mod kits from Elecraft:
>
> KPA3 12 v Sense Modification (1N4148)
> K3 Hardware AGC Threshold Mod Kit
> K3 Audio Line Out Mod Kit
> K3 DSP Upgrade Swap
> K3 I/O Buffer Mod Kit
> K3 VFO Tuning Noise Filter Kit
> K3 Remote I/O Board Upgrade
> K3 Synth Stiffener
>
> Question: Even though all of these are relatively simple (I've got lots of
> successful experience with PCB work/rework), do any of you have a
> recommended strategy for performing these mods? (i.e., just jump in and do
> them all at once? do them one at a time, checking radio function each time?
> doing certain ones together, then checking operation before doing others?
> etc.)
>
> 73,
> Phil, WA7URV K3 #1206
> ______________________________________________________________
> 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