[time-nuts] Riley paper on Tight Phase Lock Loop

[Robert Darby]

Gentlemen,

I've been a lurker on this list since early in 2012.  I do not possess a 
technical background but do have some interest in time measurement topics.

I was reading some of W. J. Riley's papers and saw that after the long 
and contentious discussion on this list Mr Riley built and tested a 
tight phase lock loop system.

I have failed to turn up any mention of his paper on this list and was 
curious if anyone has read it or perhaps duplicated it?

He writes "HP 10811 ovenized  crystal oscillators are used as both the 
locked oscillator and PLL reference, and the system thus measures the 
combined instability of two presumed identical and uncorrelated 
devices." He further notes that "These results agree well with other 
measurements  for  this type of crystal oscillator."

The paper is found at:

http://www.stable32.com/Frequency%20Stability%20Measurements%20Using%20a%20Tight%20Phase%20Lock%20Loop.pdf

The construction is described in greater detail in a separate paper:

http://www.stable32.com/A%2010%20MHz%20OCVCXO%20and%20PLL%20Module.pdf

The OCVCXO and PLL Board described therein appears to be a very 
versatile piece of gear for anyone using 10811's.   Riley gives an 
example using the module to clean-up the output of a LPRO-101 rubidium 
(page 9).


Regards,
Bob Darby