[time-nuts] Historical question

[Jeremy Nichols]

Magnus, the first HP oscillator has been studied about as much as is
possible. That is not my interest. I am looking at the HP-100 family of
frequency standards.


On Mon, Mar 1, 2021 at 12:36 AM Magnus Danielson <magnus at rubidium.se> wrote:

> Hi,
>
> On 2021-03-01 00:17, Jeremy Nichols wrote:
> > Does anyone know how many of its “first family” of frequency standards HP
> > made? That would be the HP-100A (starting in 1943) through HP-100E
> (ending
> > 1967). Just curious—I have a 100E, made in or after 1961.
>
> As I recall it, the HP200A was the first product. A handy audio
> frequency oscillator. Variants came along for 200B, 200C, 200D and those
> where made for 8 years, when they was revamped into the 200AB and 200CD
> products that ran for another 35 years of production. Pretty amazing.
> The 100 series was started later as I recall it.
>
> Rather than trusting my memory, there is a number of HP history-sites,
> and the HP Journal may have relevant articles that shed light on it, I
> would trust that way more than my memory, but at least I got you pointed
> towards that.
>
> Cheers,
> Magnus
>
>
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-- 
Jeremy Nichols
Sent from my iPad 6.