[Elecraft] KTCXO3-1

[Eric Swartz - WA6HHQ, Elecraft]

Brett is correct in that we ultimately determined that the TCXO3-1 parts 
already met our 0.5ppm spec, so additional temperature correction in f/w 
was not necessary. We only planned on using the f/w correction if we 
needed it to get to the 0.5ppm level.  I apologize if we have not made 
this clear.

We could possibly add even more temperature correction via firmware, but 
this is a low priority project that may not happen in the near future. 
It involves a fair amount of time to code and to test.

For even more frequency control, we are focusing on theK3 external 
reference board for those that want to lock to their external freq 
standards.

73, Eric  WA6HHQ

On 6/17/2010 11:37 AM, Brett Howard wrote:
> So you bought the TCXO because you wanted to be able to say that it
> was further temperature compensated by firmware?  Because what was
> promised was that it would get to 0.5PPM via additional firmware
> correction.  Well it turns out that the oscillators already do that
> out of the box.  Thus implementing even further enhancement got moved
> very low on the list because people were already receiving that which
> they were promised.
>
> ...  I'd hope that you purchased the TCXO so that
> you could have 0.5PPM rather than 5PPM accuracy on your reference  You
> can be comforted if that is the case as you are actually getting
> exactly what you paid for.
>
> ~Brett (N7MG)