[time-nuts] Gamma-ray and jitter

[Bob Camp]

Hi

The crystal in the 10811 could also get charged by leakage through the blocking caps in series with it. Sort of a "who leaks more" race between the caps, the crystal, and maybe the PC board. 

Bob


On Nov 14, 2010, at 12:08 AM, Richard Karlquist wrote:

> FWIW, you will notice that there is a high value resistor shunting
> the crystal in the 10811.  The reason for this is to drain off DC charge
> caused
> by cosmic rays hitting the crystal, according to the designers.
> 
> Rick Karlquist
> N6RK
> 
> On Sat 13/11/10 2:48 PM , "iovane at inwind.it"  wrote:
> 
> In the very recent days it has been discovered a previously unknown 
> feature of our galaxy, that is the presence of two giant bubbles 
> which appear to be gamma-ray sources.
> 
> See
> 
> http://www.nasa.gov/mission_pages/GLAST/news/new-structure.html
> [1]">http://www.nasa.gov/mission_pages/GLAST/news/new-structure.html
> 
> After reading this, I have revieved some old data of mine, which shoved 
> that the noise in a long term temperature measurement is higher when my 
> observing site is in view of that structure. Now I'm rather 
> convinced that there could be a correlation between my observations and 
> the above mentioned new findings, and I believe that the noise is 
> generated by the measuring setup in response to something 
> linked to the bubbles.
> 
> Hence I'm wondering if that stimulus could also affect the jitter in 
> high performance oscillators. 
> 
> More precisely, I would ask time-nuts whether any sidereal periodicities 
> have ever been noticed in jitter measurements.
> 
> Thanks,
> Antonio I8IOV
> 
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> Links:
> ------
> [1] http://www.nasa.gov/mission_pages/GLAST/news/new-structure.html
> [2]
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