[time-nuts] A couple of Tbolt questions

Thomas A. Frank ka2cdk at cox.net
Sat Jul 25 21:29:55 UTC 2009


On Jul 24, 2009, at 3:18 PM, Tom Van Baak wrote:

> Typical TAPR Thunderbolt phase noise is about -100 dBc/Hz
> at 1 Hz, falling to about -150 at 100 Hz, with a floor just above
> -160 beyond 10 kHz. Variations on this, and spurs, seem to be
> a function mostly of power supply. For example, see:
> http://www.leapsecond.com/pages/tbolt/noise.htm


Given the apparent sensitivity to the power supply that the Tbolt  
exhibits, has anyone put any effort into optimizing the power supply  
so as to minimize that set of effects?

ie: what is the best power supply to use to ensure maximum accuracy  
for the Tbolt?  A couple of linear supplies?  Any particular switcher?

Tom Frank, KA2CDK






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