[Elecraft] What mods should I do to my K2?

[Don Wilhelm]

Kieth,

You should need to do nothing - including changing C8.  All the upgrades
have been incorporated in the current K2 kits.

That 'C8' mod was to solve a particular problem with a particular K2 (ok, it
appeared on several in a similar serial number sequence), and should not be
arbitrarily applied unless you experience that particular problem - that
aspect of the AGC design has not changed in over 5000 K2s and has always
worked fine.  Apparently there was a small batch of lower than normal
activity crystals (my opinion, not an Elecraft explaination), and the added
10 pF helped with that situation, but changing the crystal also fixed it
properly, so don't do anything to 'fix' your K2 unless you know it is
broken!!!

Now as an additional subject, there are many mods around that do special
things, and you may elect to add these if you need the special function that
it provides - some are 'bells and whistles' like some added indicators in
the keycaps, the zero-beat detector, and such, and others change the
function of the K2, such as the mods to change the KSB2 compression ratios
or my K2 CW PTT which modifies the keying lines of the K2 to wait for an
external input signal rather than transmitting immeditely when the paddles
are activated.  Chose from these mods as you would wish, but be aware that
they are not 'Elecraft approved' and as such could interfere with any
warranty claims.

73,
Don W3FPR

> -----Original Message-----
>
> My bare-bones K2 SN 5411 is in the build process (ctrl board done, front
> panel 80% done).  I'm wondering what mods I should do now to avoid
> teardown / rework later?  So far it looks like I should change C8 on the
> control board to 10 pf.  What else?
>
> - Keith KD1E -
>