[Elecraft] K2 Mods & Revisions

[Don Wilhelm]

John,

SN 4507 incorporated all prior Elecraft changes in the original 
construction.

Unless the previous owner has added some non-Elecraft modifications, the 
only possible changes would be the Keying Bandwidth Mod and the PLL 
Temperature stability mod.

I suggest you download the instructions for those 2 mods from the 
Elecraft website so you can compare the boards on your K2 with the 
instructions for each of these two mods - if the parts mentioned in the 
mod instructions are not present, then the answer is easy - it is not 
installed.

73,
Don W3FPR

John Reilly wrote:
> I just purchased a used K2 (s/n 4507). When It arrives, how can I tell 
> which mods and revisions have been installed?
> Thanks,
>