[Elecraft] K3 question/problem

[Robert Brigham]

Elecrafters,
Another tool that I have used sometime to suppliment
the Spectrogram program is the waterfall display of
Digipan (or any of the similar PSK31 programs). For
example, the waterfall display shows the time
dependence of the WWV components making it easy to
identify the carrier (center band) and the modulated
components which appear symmetrically on either side.
It was also a big help setting up the RTTY filters for
PSK31.
Rob
KC6ROC
K2 #5924

--- David Wilburn <dave.wilburn at verizon.net> wrote:

> I have had a great deal up success using Spectrogram
> as Don describes.
> This page is very helpful for understanding what
> goes on, minute by
> minute, with the WWV signal.
> 
> http://tf.nist.gov/stations/iform.html 
> -  
> 
> David Wilburn
> k4dgw at k4dgw.com
> K4DGW
> K2 S/N 5982
> 
> 
> On Mon, 2007-12-31 at 18:32 -0500, Don Wilhelm
> wrote:
> > Cary,
> > 
> > 500 Hz high?  Now that sounds like you did the
> zero beat correctly, but 
> > at one of the WWV tones rather than the carrier. 
> I suggest you try 
> > again.  If you want to try an alternate to audible
> zero-beat, see below 
> > - there will be no confusion about whether you are
> zero beating a WWV 
> > tone or the carrier.
> > 
> > You might try an alternate to the Zero-Beating
> method by connecting the 
> > K3 to a computer running Spectrogram.  Tune the
> receiver in LSB or USB 
> > mode to 10.000.000 and listen to the WWV signal -
> put markers (pointers) 
> > in Spectrogram at 500 Hz and 600 Hz.  WWV
> transmits one of these tones 
> > on alternate minutes.
> > 
> > Then enter the CONFIG menu and find REF CAL.  Tune
> the VFO A knob until 
> > the tones from WWV line up with the markers in
> Spectrogram.
> > 
> > I consider the above method more accurate than
> using a frequency counter 
> > of unknown calibration.  Of course the audible
> zero-beat method works 
> > fine too, but there is always the possibility of
> confusion about whether 
> > one is zeroing the carrier or one of the
> transmitted tones.  The warning 
> > about being certain you are zeroing the carrier
> goes back to the days 
> > when we were calibrating our secondary frequency
> standards - one must 
> > wait for a silent minute to be certain we zero the
> carrier.
> > 
> > Happy New Year.
> > 
> > 73,
> > Don W3FPR
> > 
> > 
> > 
> > H. Cary III wrote:
> > > ... I have done the frequency synthesizer
> alignment using the zero beat with WWV but when I
> tune WWV at 10 MHz, I have to get the dial to about
> 9.999.92 or so to be right on it.
> > >
> > > I have a sked on Sundays with two friends, W5ZNN
> and WA6EBB, and was hoping to have my K3 operational
> so they'd be my first contacts.  Well, in a sense
> they were but apparently my signal is about 500
> hertz higher than my receive frequency AND the audio
> sounds narrow and broken.  I think the problem may
> be with the frequency synthesizer alignment...I used
> the zero beat method until I can get my hands on a
> frequency counter from some of my more
> electronically astute ham friends...am I looking in
> the right direction or should I be looking somewhere
> else?
> > >
> > > Best New Year Wishes to y'all.
> > >
> > > 73,
> > > Cary, K4TM
> > > Lynchburg, VA
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