[Elecraft] Older Serial# K3

[Lyle Johnson]

> "....There have been several changes to the K3 and not all of them published. The early PA and driver were 
> replaced around Jan 2008..."

There have been, and will continue to be, ongoing improvements to the 
K3.  This is normal in the life of any product.  My s/n 00002 K3 has its 
original PA and it works just fine.  Sometimes changes in the design are 
to increase the yield of functional modules in manufacturing, to adjust 
to market availability of certain components, and so forth.

Changes that improve performance or reliability are made public and mod 
kits are generally made available.  Or a module swap may be instituted, 
such as the DSP LPF in recent months, or the revision of the KXV3 to 
the  KXV3A to support the K144XV internal 2m module

You can always compare the schematics of early K3s with the latest K3s.  
We update the schematic package approximately annually.  We published 
the original set of schematics in October 2007 on the website.  We 
updated the package of schematics in October of 2008, and again in 
January of this year.  We'll do it again late this year or early next.

Don't worry.  Hook up your antenna and enjoy your K3!

73,

Lyle KK7P