[time-nuts] EFOS B Hydrogren maser arrived

[Magnus Danielson]

Dana,

First up is getting logging of internal state. Then I get to setting up
of GPS measurements.

Environmentally this is not as ideal location as one would want, but I
will monitor the ambient temperature as soon as I have logging. I think
I have a few other things to log eventually, so it will be interesting
to see, but it is when these things is allowed to shift around one sees
their effect.

Exactly how I make things available is yet to be figured out, but I will
keep you guys informed and updated at least.

Cheers,
Magnus

On 2019-12-28 14:07, Dana Whitlow wrote:
> 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
>>
>>
>>
>> _______________________________________________
>> time-nuts mailing list -- time-nuts at lists.febo.com
>> To unsubscribe, go to
>> http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com
>> and follow the instructions there.
>>
> _______________________________________________
> time-nuts mailing list -- time-nuts at lists.febo.com
> To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com
> and follow the instructions there.