[Elecraft] High Accuracy TCXO

[Ken Wagner]

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
>>