[time-nuts] Which Rubidium to Get?

Bob Camp lists at rtty.us
Thu Jul 22 12:39:32 EDT 2010


Hi

If cost is no object, get one of each...

The 5065 is a very different beast than the LPRO performance (and cost)
wise. I've never played with a XSRM. 

Bob

-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Adrian
Sent: Thursday, July 22, 2010 10:52 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Which Rubidium to Get?

Brent,

aside of the small and inexpensive module boxes, how 'bout a HP 5065A or 
a Rohde & Schwarz XSRM?
Both provide a lot more fun :)

Adrian


Brent Gordon schrieb:
> I'm considering buying a rubidium standard, not that I really need 
> one, just because I'm a Time Nut.  I have some questions on what to 
> look for and what to watch out for.  I'll probably get one from either 
> fluke.l or flyingbest on ePay.
>
> I know that they wear out.  Is there any model I should look for or 
> avoid?  I see both Efratoms and Datums; some of the auctions claim 
> more lamp life left for the Datums.
>
> I know that the mating connector for the rubidiums with an RF inside 
> the d-sub connector are expensive.  Is it really needed or is the 
> header connector good enough?
>
> Some of them come with an output board (290295929282).  Does this get 
> me anything other than a Type-N output and a mating connector for the 
> RF d-sub?  Why is this one cheaper than just a rubidium?
>
> A programmable frequency output, such as this one (eBay item 
> 290301888238), might be useful.  Is it worthwhile or more trouble than 
> it's worth?
>
> Are there any gotchas I should be aware of?
>
> Thanks,
> Brent
>
>
>
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