[time-nuts] Best Rubidium Frequency Standard

timenut at metachaos.net timenut at metachaos.net
Fri Mar 11 14:59:55 UTC 2016


Luciano,

Why? Why the Efratom FRK or M100 over the Efratom LPRO-101? The M100 appears
to be manufactured in '91. Given the limited lifespan, why such an older
choice? I didn't list the HP5065A because I didn't see it on eBay. What makes
it better than the others? Why not one of the Symnmetricom versions (which
also appear to be Datum / Efratom)?

Can the M100 be disciplined electronically? That wasn't clear from the eBay
pictures that I saw. I also saw a 5Mhz and a 1Mhz version. Is one better than
the other?

Thanks.


Mike.

P.S. I have jury duty today and the Charlotte hamfest tomorrow, so I may not
be online as often as usual for the next couple of days.



> Hi Mike,

> You have not mentioned the best Rubidium available, the HP5065A. Last week two of them are sold on ebay.
> Second chose can be the Efratom FRK or M100, than all the others.

> Luciano




> On Fri 11/03/16 12:02 , timenut at metachaos.net wrote:

>> Hi,
>> 
>> In looking at eBay, I current see quite a few different types of rubidium
>> frequency standards. I have seen some of these mentioned here, but no real
>> comparisions. The question, is what are the pros and cons of these
>> specific
>> models? Which ones are best or most reliable? Which ones cannot be
>> disciplined
>> by a GPS? Is there some specific ones I should never buy or others that I
>> should stalk, waiting for one to show up? I know that some of these may be
>> from the same company, but are typically listed differently. Here are some
>> of
>> the ones that I currently see on eBay. Also, is it worth it to buy "lot of
>> 5"
>> of "for parts or not working"? What is the likelyhood that at least one
>> can be
>> made to work? Thanks.
>> 
>> AT&T KS-23823 L2 Disciplined Rubidium Oscillator
>> Datum Efatom LPRO-101
>> EDIC Systems YP-1079B portable Rubidium Standard Oscillator
>> Efatom FRS-A
>> Efatom FRS-C
>> Efatom M-100
>> Efratom 2100-003 Rubidium Oscillator
>> FE-1995A
>> FE-5650A
>> FE-5680A
>> SRS TSD12
>> SpectraTime SRO-100 GPS Synchronized Rubidium Frequency Standard
>> Symmetricom 23478272-004-0-Stratum-2-Rubidium Clock
>> Symmetricom Efatom SLCR=101
>> Symmetricom SA.22c
>> Symmetricom X72
>> 
>> Mike
>> 
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-- 
Best regards,
 Timenut                            mailto:timenut at metachaos.net




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