[time-nuts] Re: Primary frequency standard

[Poul-Henning Kamp]

--------
cdelect at juno.com writes:
> In reference to:
>
> "It would be cool to say one has a "primary standard", .... So, I think
> we should be careful with the term, it's get thrown around too lightly."
>
> Any of the hobby grade used Cesium standards is actually a Primary
> frequency standard as it does meet the definition of:
>
> A frequency source that meets national standards for accuracy and
> operates without the need for calibration against an external standard.

That is the definition I was referring to, but as Magnus said, other sectors
uses the term "primary" differently.

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