Gerhard, does not sound right, Tom did an extensive evaluation, steps in 6.6 
E-15 at 15 MHz. Our best GPSDO.Am out of  town back Tuesday have extensive info 
on my PC need to get off listBertSent from my Galaxy Tab® A
-------- Original message --------From: Gerhard Hoffmann <[email protected]> Date: 
7/6/19  11:58 PM  (GMT-05:00) To: Discussion of precise time and frequency 
measurement <[email protected]> Subject: [time-nuts] FEI 405B 
oscillators Hi,I have one of these FEI405 oscillators from this list auction 4 
years ago.While it dives nicely down deep into E-13 land over some seconds, it 
only delivers -2.5 dBm output powerand has a lot of phase noise and spurs far 
out. That does not look healthy.Is there a real data sheet out there in the 
wild, or has someone even re-engineered this thing?If you google for it, you 
get links to Fender guitar bags, fertilizers and electron microscopes,but 
nothing on oscillators apart of the time nuts thread from 4 years ago.If the 
data sheet really says -2 dBm, then I could get rid of the spurii and life 
would be OK.Yes, I have found the Frequency Electronics web site, but it seems 
they deny 
parenthood.Gerhard_______________________________________________time-nuts 
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