[Elecraft] Frequency standard

[Don Wilhelm]

Leo,
If my math is correct - at 10 MHz an accuracy of 10^-5 is 100 Hz. so IMHO
that is not sufficiently accurate for calibration of the K1 or K2.  I
usually want my 'standard' to be 10 times better than the device under test,
so if I am looking for 20 Hz accuracy on the K1/K2, I would try to use a
standard that is good to 2 Hz.  (BTW - that accuracy would not include any
inherent inaccuracy introduced by the DAC, so if the DAC is only good to 20
Hz, the overall accuracy would be 40 Hz in the case I mentioned).

OTOH, if you can implement the 10^-8 standard accuracy, you should be about
as close as you can get with the K1/K2.

73,
Don W3FPR

----- Original Message -----

> A German firm offers a "frequencystandard" which gives a 10 MHz signal
with
> the following stated accuracy: with a television (PAL) H signal 10^-8,
> without 10^-5. The cost is from €89.
>
> My question: is the 10^-5 accuracy usefull as a reference for the K1
and -2
> ?