If this at first appears to be off topic read on.
Having this year survived fire evacuations and most recently what has been
called anything from a five to 1000 year flood here in Boulder, I have has a
little time to reflect on just how lucky I was. Over the last few years I have
made a few upgrades to harden my home against natural disasters. Adding
sprinklers to the roof and a industrial sump pump in my basement. To say the
least it paid off in a big way last week, since if my basement had flooded I
would have lost my lab that I have spent several decades building. It has
motivated me to finish upgrading my grounding and lightning protection with a
new eye to detail. I write this post to encourage others to do the same by
spending a few minutes to look for any vulnerabilities and spend a few days
addressing them. Or at least upgrading insurance. For many here in Boulder
lately there is nothing they could have done, but for amny other a few minutes
could have saved them months of work. If I can help just one Time-Nut save his
lab
it is worth it.
Now for the good stuff, We all have our idea of what a low or Ultra Low
phase noise oscillator is. For 5 and 10MHz references I usually
look first at 1Hz offset then the noise floor. At 5MHz I
consider 125dB @ 1Hz state of the art. But now
Arcihita Hati and colleges at NIST has designed a State-of-the-Art RF
Signal Generation From Optical Frequency Division that sets a new standard for
low phase noise with nearly -155dB @ 1Hz for a 5MHz reference. All I want to
know is when will it be available as a
single chip. And how long before Magnus, TVB, and other Senior
Time-Nut have a workable prototype in their labs? The NIST link is not
yet active, but if you would like a copy of the paper now email me off list I
will send you the paper as an attachment. I think it may also be posted on
IEEE's pay to play site.
Thomas Knox
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