[Elecraft] K3: Use AM SYNC on WWV to calibrate DDS?

[The Smiths]

If you really want to get your K3 right on target with the Ref. Cal setting, you can use a free program called Spectrogram and set up marker tones at your pitch freq. and 100Hz above your pitch freq.  Set your rig on WWV and match the peaks of the tones to the markers... Once you have those centered perfectly on the markers you'll be within .05Hz.  Doesn't get too much better than that.
Be sure to let your rig warm up for about an hour before you make the adjustments.
 
> Date: Wed, 19 May 2010 14:45:25 -0400
> From: nr4c at widomaker.com
> To: nekvtster at gmail.com; elecraft at mailman.qth.net
> Subject: Re: [Elecraft] K3: Use AM SYNC on WWV to calibrate DDS?
> 
> 
> 
> K1LI <nekvtster at gmail.com> wrote:
> 
> >
> >AM-S in FW 3.97 works great. I notice that my frequency displays 15.000.024
> >when tuning in WWV on 15MHz and 10.000.16 on the 10MHz signal. (Happily, the
> >displayed frequency is the same on both "sidebands.") The ratio of the
> >15MHz/10MHz received frequencies is equal to the ratio of the 24Hz/16Hz
> >difference between the displayed readings and the "actual" signal
> >frequencies (I trust WWV!).
> >
> >Is there a lesson here that I can use to improve the frequency calibration
> >of my K3?
> >
> >73 -- Brian -- K1LI
> >-- 
> >View this message in context: http://elecraft.365791.n2.nabble.com/K3-Use-AM-SYNC-on-WWV-to-calibrate-DDS-tp5074859p5074859.html
> >Sent from the Elecraft mailing list archive at Nabble.com.
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