[Elecraft] High Accuracy TCXO

[S Sacco]

Hi Ken -

I saw that sheet, too.

I understand what you're saying about the firmware being to enhance
the accuracy to the .5 ppm, and I'm sure you're correct about that.

My statement about Elecraft wasn't my "feeling"; it was a reporting of
fact.  My "feeling" is that they're not being as honest as they
should, but that's just me; others have higher tolerance for such
behavior.

As I type this, I see that Eric chimed in, with an update on the
firmware status for this - thank you, Eric.

I ordered a 2nd K3 last week (pre price increase - yippee!), but
without the 1ppm TCXO.  I'll be interested to see if I even notice the
difference.


For now, I'll be enjoying my K3.

Thanks/73!

Steve NN4X




On 3/4/08, Ken Wagner <kenk3iu at cox.net> wrote:
> Sorry you feel that way, Steve.
>
> The K3TCXO-1 that came with my K3 has a calibration/test sheet that
> clearly indicates that it is accurate to within 1 ppm. This has nothing
> to do with firmware. The setup procedure in the manual that is currently
> not usable is the procedure that will make the TCXO-1 accurate to within
> 0.5 ppm by use of firmware. Of course, I could be 100% wrong, but I
> don't think so.
>
>  From the K3 Order page...
>
> "KTCXO3-1 TCXO +/-1ppm (f/w corr. to 0.5ppm)"
>
> 73,
> Ken K3IU
>
> S Sacco wrote:
> > The setup for the 1 ppm TCXO is not enabled; I'm not sure what that
> > means vis-a-vis the stability.  I've only had my K3 for a short time,
> > and haven't attempted to monitor the stability.
> >
> > Bottom line: a product is being actively advertised and sold, but the
> > buyer is not told that they will not be able to use it as advertised.
> >
> > Glad you're seeing excellent stability.  Perhaps I'll play with that,
> > and montor WWV over an evening....
> >
> > Thanks/73!
> >
> > Steve NN4X
> >
> >
> >
> >
> >
> > On 3/4/08, Ken Wagner <kenk3iu at cox.net> wrote:
> >
> >> Unless I misunderstand what is published, the firmware for the 1 ppm TCXO is
> >> only to allow it to be tightened up to 0.5 ppm, and does not affect the
> >> basic 1 ppm TCXO. I have the 1 ppm TCXO and even though I haven't done any
> >> scientific calibrations, I'd say it has a 1 ppm capability... or pretty darn
> >> close to that.
> >>
> >> 73,
> >> Ken K3IU
> >>
>