[time-nuts] Any thoughts on best rubidium?

[Rex]

On the FE-5680A, there are quite a number of versions that have that 
number and look the same. Most run from one voltage input (+15V ? from 
memory) but some take that and a +5V to run. Most can be tuned with 
software, but the dual voltage one I got some years back -- I never 
found a way to calibrate it. So the 5680A is a bit of a crap shoot 
unless you know exactly what you are getting.

If I remember right the FRS-C was not very good for phase noise.



On 7/10/2011 4:37 PM, Dr. David Kirkby wrote:
> I'm looking to get a rubidium source to use as a reference for a 
> spectrum analyser, frequency counter or similar test equipment. All 
> these need a 10 MHz input.
>
> I've looked on eBay and found a few that seem to be in plentiful supply
>
> * EFRATOM 10MHZ LPRO-101
> * FE-5680A
> * SLCR-101
> * Efratom 10MHZ Rubidium FREQUENCY Standard FRS-C
>
> Is there any reason to chose one over another for the application I have?
>
> Is there any seller to avoid or you can suggest is particularly good? 
> I want to import this to the UK, but are not bothered where it comes 
> from, as long as the seller is reliable.
>
> Dave
>