[time-nuts] Why would I want a rubidium

[Joseph Gray]

I know I don't "need" any of this stuff. I was just wondering what I
could do with a rubidium vs what I already have.

On Mon, Oct 5, 2009 at 10:58 AM, J. Forster <jfor at quik.com> wrote:
> From an engineering point of view:
>
> Very few people really "NEED" a Rb or Cs as they are not really doing
> anything that requires that level of precision in frequency or accuracy in
> time (me included). These days a BC-221 or WWB is not good enough, but 1
> Hz at X-Band is for almost all practical uses.
>
> It's a hobby. Just enjoy it!
>
> FWIW,
> -John
>
> ================
>
>
>> Rubidium is a 'Secondary' reference, meaning it must be calibrated against
>> a
>> 'Primary' reference such as a Cesium Beam or Hydrogen Maser or, perhaps,
>> your GPSDO.  Cesium Beam Standards some times appear on e..y in various
>> states of disrepair but are fun to play with.  There have been many
>> discussions about their merits, or lack there of, on this list and it
>> might
>> make interesting reading.  I am amazed that, in my little shop, I can
>> generate something that seems 'locked' to the signal I get from my GPSDO
>> and
>> requires no calibration.
>>
>> Your GPSDO is 'linked' to the NIST Hydrogen Maser via the satellites.  The
>> only problem comes when and if the satellites are not usable.
>>
>> I am a relative 'newbie' as well, so be careful.  This stuff is addicting.
>>
>> Joe
>>
>>
>>
>> -----Original Message-----
>> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
>> Behalf Of Joseph Gray
>> Sent: Monday, October 05, 2009 2:09 AM
>> To: Discussion of precise time and frequency measurement
>> Subject: [time-nuts] Why would I want a rubidium
>>
>>
>> Sorry for the newbie question, but with two Z3801A's, what use would I
>> find
>> for a rubidium unit? I see lots of them on ebay from the Chinese sellers.
>>
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>
>
>
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