[Elecraft] PLL Range (was K2 #4785)

[vze3v8dt]

I'm just at the point of testing the PLL Reference Oscillator Range as 
well and am measuring 9.11 kHz.  This is low compared to the spec of 9.8 
to 15 kHz per the manual.  Before I proceed to much farther, is 9.11 kHz 
okay as is?  Should I be getting a 12 uH replacement L31 as well?  What 
is the downside of leaving it as is?


Mark, NK8Q
K2 S/N 4786

[EMAIL PROTECTED] wrote:


Hi all.

K2 #4785 is well under way no major problems yet.
my kit was supplied with inductor L31 10uh.
but due to xtal not being 'rubber' enough ref Gary at support,
to give me the correct pll range.
I am waiting on a replacement for L31 with a value of 12uh
The manual states a prefered range of 9.8  to 15kHz my range was  9.06.
I have noticed on the elecraft website under builder resource(after  removing 
part grrr)

that a range of 8.8 to 18kHz is ok, can someone explain these values,
oh by the way I have cut out and destroyed in the process the 10uh  choke so 
I have to
wait for replacement, comments on cutting out parts before replacements  
arrive

would not be helpfull at this stage i know im a fool hi.
The big question is did I need to worry in the first place
looking forward to replys.

Mick  M1MGD


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Re: [Elecraft] PLL Range (was K2 #4785)

[John, KI6WX]

Mark;
I would recommend using the 12uH inductor.  I designed the K2 PLL
temperature stability mod and it is my recommendation that you not have an
oscillator reference range below 9.8kHz for the most effective performance
of that circuit.
-John
 KI6WX

- Original Message - 
From: [EMAIL PROTECTED]


 I'm just at the point of testing the PLL Reference Oscillator Range as
 well and am measuring 9.11 kHz.  This is low compared to the spec of 9.8
 to 15 kHz per the manual.  Before I proceed to much farther, is 9.11 kHz
 okay as is?  Should I be getting a 12 uH replacement L31 as well?  What
 is the downside of leaving it as is?

 Mark, NK8Q
 K2 S/N 4786



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