[Elecraft] K2/100 up-date

[Don Wilhelm]

Greert Jan de Groot,

If you have an earlier K2, I suggest that you do the other upgrades.
If your K2 is below SN 3000, then the K2ATOB mods are applicable - 
download the K2ATOB instructions for a list of all the mods are required.
If your SN is below 2560, I recommend replacing the IF crystals for a 
better IF filter response.
Those steps will bring it up to date except for the K2 Keying Waveshape 
mod which is currently not available from Elecraft as a kit.  I can give 
you instructions on how to install it on your K2 if necessary.  K2s 
above SN 4660 have that mod already installed.

73,
Don W3FPR



On 5/9/2021 5:36 PM, Geert Jan de Groot wrote:
> On 09/05/2021 20:54, elecraft-request at mailman.qth.net wrote:
>> Don, W3FPR used to do much of this work on K2 transceivers, but he has
>> retired from that role.  Dave, W8FGU has assumed Don's role. Alan, W3DVX
>> also provides such services.  Both have posted periodically to this 
>> forum.
>> There may be others who are experienced K2 upgraders, but these are the
>> folks that come to mind.
>
> I built my KPA100 15 years ago or so and only recently I investigated 
> updates. The KPA module has seen a number of design updates over the 
> years and it makes sense to investigate. I've updated mine (thanks 
> QRP-shop for getting the mod kits in Europe, through Corona times!) 
> and at the end of a long evening I have a bag of swapped-out parts and 
> a PA that worked quite a bit better, feels like a new unit.
>
> I have not used one of the upgraders (being in Europe, postage and 
> customs would probably have me mortgage the house, frankly) but I do 
> recommend updating. It is too bad you don't have the setup to do it 
> yourself because on K2, these mods really are simple and can be done 
> on the kitchen table.
>
> Geert Jan
>