[TenTec] OMNI VI crystal oven stability

Clark Savage Turner WA3JPG turner@safety.ics.uci.edu
Thu, 14 Aug 1997 15:34:59 -0700


I took some data from my master oscillator.  I waited 3 minutes for
the oven to settle down before taking measurements.  I set the
trimmer cap to a reference frequency of 10.00001   and went from
there.  I used the Startek frequency counter with 10 Hz resolution.

Began at 20:30 and measured 10.00001
	 20:40		    10.00002
	 20:50		    10.00003
	 21:20		    10.00004
	 21:58		    10.00005
	 22:22 		    10.00006

There are some points where I observed flutter where the freq counter
was transitioning, so these times are not really exact, and only give
10 Hz resolution.  However, there is a definite trend :-).  Would
you all say that this is not acceptable for the Ten Tec OMNI VI 
master oscillator crystal oven?  Should I go out and fork over the
$50 for a new one?

I will check on my BFO next for good measure, it has been suggested
that problems can reside there also.  I will check the trimmers in
different modes for alignment, and watch some of them to see if they
move much.

Thanks for all the comments and suggestions.  

Clark
WA3JPG

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