[time-nuts] EFOS B Hydrogren maser arrived

[Dana Whitlow]

Magnus,

I hope you'll be keeping a record of frequency drift of your  EFOS B  over
time
(not necessarily counting the settling-in period) and making this public.
I'd like
to compare the numbers with what I remember for the MHM-2010 at Arecibo,
which amounted to slowing down by roughly 1E-13 per year.

Dana


On Fri, Dec 27, 2019 at 8:22 PM Magnus Danielson <magnus at rubidium.se> wrote:

> Fellow time-nuts,
>
> This afternoon my EFOS B hydrogen maser has arrived and been set up. We
> just need to wait for it to lock up, which may take about a week. I can
> report a lot more on it, as I have a huge stack of documents. Hydrogren
> diassociator already gives that nice pink glow. Its been refurbished and
> measured, so it goes to 3E-15 at least, should reach 2E-15, with out
> trouble. It is a huge beast, so it took quite some effort to get the 250
> kg heavy beast of the van, and in the house. Now we have enjoyed dinner
> and good drinks. I will do a bit of more cleanup before I meet my final
> destination for the evening, but it all looks good so far.
>
> I have 5 MHz, 180 MHz and 1440 MHz outputs to play with.
>
> So, I have now transitioned from OCXO, to Rubidium, to Cesium and to
> Hydrogren maser.
>
> So, this is why I think in terms of phase microstepper.
>
> Cheers,
> Magnus
>
>
>
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