[Elecraft] K-3 upgrade question

[Don Wilhelm]

I would suggest you start by removing the top and front bottom covers as 
well as the left side panel.
Then remove the subRX assembly.
You can install the new synthesizer boards at that point - do not put 
the subRX back in until you finish the other upgrades.

Then you have a choice - deal with the Front Panel and DSP assembly or 
deal with the parts in the rear.

If you have an older K3 and need to do the 'gold pin' replacement on the 
PA, you will end up removing the entire rear panel - so do the 1 amp 
increased current for the rear panel AUX 12V while you have the rear 
panel off.
You can also do the KIO3B install with the rear panel off.

If you are doing the KBPF3 upgrade, do that next, and do the KBPF3 in 
the subRX if that option exists.

While you have it open, there are other upgrades to the RF Board - 2 
associated with the audio amp and several others.  You did not state how 
old this K3 is, so I don't know if you need to install these other mod 
kits and Application Notes.

If you have a very high confidence level in your ability to put it all 
back together correctly, you can be successful in "doing it all at once".
However if your memory of "which part fits where" is not excellent, I 
suggest just doing the upgrades one at a time - and follow the 
instructions for each (but do not re-install the subRX and top/bottom 
panels until all the other upgrades are completed).

After you have upgraded 2 of them, you will be equipped to easily "do it 
all at once", but be cautious doing it for the first time, and "do it by 
the instructions" to be on the safe side.

73,
Don W3FPR


On 8/22/2016 3:37 PM, Louis Ives wrote:
> I have received all the necessary parts to begin updating my K-3 to K-3s.   My K-3 has all options except the second receiver. I need to know if there is a  suggested sequence to perform the updating. I am trying to not have to remove items more than once if at all possible.
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