[Elecraft] K2 working on 40M
Don Wilhelm
w3fpr at embarqmail.com
Fri Feb 12 13:16:40 EST 2010
LS,
Great progress. Congratulations.
Make note that the 4.000 MHz reference oscillator setting that is
correct may differ slightly from exactly 4.000 MHz - so don't exhaust
too much effort on getting it 'right on' using any kind of measuring
device - there is a better way.
After you have your K2 finished, use the "N6KR" method (by Wayne Burdick
himself) to set the reference oscillator precisely - it requires only
the internal counter probe and the ability to receive a known frequency
(like WWV at 10 MHz or 15 MHz) on the K2. I could not find the not
locate the document on the Elecraft website a few minutes ago, but it is
preserved on my website - see http://www.w3fpr.com/n6kr_method.htm for
the content of Wayne's original reflector post.
While you are going to that trouble, why not do the entire job of
calibrating the K2 dial reading. For full information on how to
accomplish that as well as supplimental information on setting the K2
filters, look at the atricle on my website www.w3fpr.com dealing with
Setting the K2 Dial Calibration - the whole procedure is explained there
including the use of Spectrogram. The full explanation take longer to
read than to actually do it - walk through the steps once and the second
time it will be easy.
73,
Don W3FPR
lstavenhagen wrote:
> Fortunately for the 4.00 mhz oscillator adjustment I have my 706MKIIG which
> is pretty well calibrated via WWV over the years I've owned it, so I have
> been able to get it pretty close there. I may have a go with it again when
> the rig is done using the methods posted on Don's website.
>
> Mine is CW only and will stay that way so just the CW filter adjustment is
> all I think I'll have to go through. I think I got it pretty close with the
> suggested values in the manual in the section on filter setup.
>
>
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