[time-nuts] Low Phase Noise 10 MHz bench signal source sought

[ew via time-nuts]

There is a lot of talk of Rb's and OCXO's  and using an OCXO for clean up. Very 
little about the clean up loop. It is key for overall performance. We are 
working on it for quite some time and are not happy with the results. On list 
off list would greatly be appreciated.                                          
            Bert Kehren  
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[time-nuts] Low Phase Noise 10 MHz bench signal source sought

[Joseph Gwinn]

I'm looking for suggestions for AC-powered 10 MHz sinewave laboratory 
signal sources with very low phase noise, having a noise floor below 
-170 dBc/Hz.  Rubidium is desired, but not essential.  Reliability 
and durability in lab use is essential.

Which makes and models should I consider purchasing?  

I like the SRS model FS725, but its noise floor is too high at -150 
dBm/Hz, 20 dB noisier than many things I may wish to measure.  


Thanks,

Joe Gwinn
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