[Elecraft] K2 filter xtals

Don Wilhelm w3fpr at earthlink.net
Tue Jul 3 15:10:29 EDT 2007


Sam,

First, you did not waste your money.  It is the motional inductance 
parameter for the crystals that is now better controlled (spec with the 
xtal vendor) - the crystals have always been matched to the nearest 10 
Hz as far as I know.  The newer speced crystals are in K2 kits after SN 
2559.

For the grounding on both sides, there is a good description in the more 
recent K2 manuals - download the new manual and take a look at the 
section where the crystals are installed.

I also ground the KSB2 crystals near the base too - that must be done 
sequentially as you add the crystals.  Don't worry much if the process 
is not obvious to you, the improvement is not very much - not enough to 
fret over.

73,
Don W3FPR

Sam Morgan wrote:
> So what is Eric calling new?
> http://www.ac6rm.net/mailarchive/html/elecraft-list/2002-12/msg00141.html
> 
> I have K2 #2481 and just ordered the K2KSB2XTLS did I waste my monies?
> 
> I thought the K2KSB2XTLS was a more closely matched set that would give 
> me a better shape factor than the generic one that was installed 
> whenever #2481 was built?
> 
> Also I remember seeing a web page with some comments on a *better way* 
> to ground the xtals. Can anyone point me to it?


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