Re: [time-nuts] Efratom M3100

[ed breya]

I have some SPTB-100 units, which are similar to M100 units, which 
may be similar to yours. A few years ago, one failed to lock, 
regardless of adjustment, and I found that one of the integrator 
capacitors in the OCXO control loop was very leaky. I don't recall 
which one, and couldn't even identify it because I had no exact 
schematic, but I was surprised because it was a plastic or 
small-valued ceramic unit (and not within the high temperature 
environment of the oven), which in my experience were usually quite reliable.

Ed

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