[time-nuts] Rubidium Frequency Standard

[timenut at metachaos.net]

Pete,

I will be using it for a general lab standard, to feed into other test
equipment. But, I can't predict my future usage, so I want the best that I can
get. I also plan on eventually locking it to a GPS (probably a U-Blox board).

I am retired, so my budget is nearly non-existent. :-) I have to spread the
cost around, so cheaper is better even if I then have to spend extra later.
The HP 5065A that Paul found at 1800 EUR is very much out of range. A new
PRS10 is only 1495!

I am considering a PRS10 or LSD12 that needs repair. Schematics are available,
the ones available are within the 20 year life span of the rubidium bulb and
are much more affordable than a working unit. It is, of course, a gamble.

Right now, I am researching. Actual purchase will be later once I decide which
way to go and budget the money. I may need other things first (a power supply
springs to mind). I researched the scope that I wanted to buy for a couple of
months before I pulled the trigger. It blew within 5 minutes, but fortunately
only needed recapping. I also made a few other modifications while I was at
it. It still needs calibration. All that took another three months after
purchasing.


Mike


> Corby mentioned one very important thing .. what are you going to be using
> it for ?

> and I'll ask what is your budget ?

> That will determine quite a bit.

> -pete

> On Fri, Mar 11, 2016 at 11:02 AM, <cdelect at juno.com> wrote:

>> Mike,
>>
>> Luciano is correct. The HP 5065A beats all the others easily.
>>
>> It is not configured however to be disciplined  although it can be
>> modified.
>>
>> It's main claim to fame is the excellent short term stability.
>>
>> If all you are after is a long term accuracy standard then any of the
>> others would work.
>>
>> There has been a lot of work done with disciplining the FE-5680 and also
>> temperature controlling its baseplate.
>>
>> Results are very good!
>>
>> Cheers,
>>
>> Corby Dawson
>>
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-- 
Best regards,
 Timenut                            mailto:timenut at metachaos.net