[time-nuts] Some results on a very interesting Sulzer OCXO

[Rob Sherwood.]

I had a 5 MHz Sulzer in my lab for 20+ years, later adding a 2.5 MHz version.  Living in Denver made tracking WWVB very easy with three different comparators over the years.  I never managed to run them without a power interruption for anything close to 4 years.  I also obtained two with an odd-ball frequency, but unfortunately have forgotten what an engineer at WWV told me about the purpose.  After obtaining an Efratom M-100 I sold all four units to another frequency buff. If they suffered a power outage it took weeks for them to really settle down to their low drift rate.  

Rob, NC0B

Sent from my iPad

> On Sep 19, 2015, at 3:30 PM, "John Ackermann N8UR" <jra at febo.com> wrote:
> 
> 
> 
> I just did some measurements on a Sulzer 5 MHz OCXO that dates from the early '60s.  Not only is the performance quite amazing, but there's a surprise: it's not on the frequency you'd expect, and it may have some historical interest.
> 
> Details at http://blog.febo.com/wp/?p=17
> 
> (I'm playing with a Wordpress blog engine to log notes to myself, as well as document interesting things.  Not too much of interest to the wider world, but it's at http://blog.febo.com )
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