[Elecraft] Re: K3 Reference Oscillator

[Don Wilhelm]

Mike,

I believe you are mixing parameters.  The K3 can be set to within 1 Hz, 
but the 0.5 ppm number applies the drift with temperature changes, and 
that is something quite different than accuracy.

73,
Don W3FPR

Mike S wrote:
>
> Can the high stability reference also be calibrated at temperature to 
> achieve 1 Hz, like the standard reference, or must one trust the 
> calibration table which provides 0.2-0.5 ppm (10-25 Hz) accuracy? If 
> calibrated at temperature, does the delta then offset other table 
> entries (which might be used to accommodate crystal aging, for 
> example), or are individual table entries calibrated? Can a 
> calibration table be used with the standard reference?
>
> I can see some applications where "1 Hz, but you have to calibrate if 
> the temp changes" is better than "10-25 Hz, but you never touch it."
>