[sdiy] VCO Stability

[patchell]

    I just got done doing another temperature run on the VCO I am
working on.  The first run, I had between 500->700ppM/C drift  (the
range is because I used two different ways to measure the temperature,
and there was some disagreement).  The run I just completed got me down
in the range of about 50ppm/C.  I made an adjustment to the gain in the
temp compensation, and it seems to have done the job.  This is still
preliminary.  I am going to do another run to see if I get the same
results.

    I am still going to post the schematic...but, I have been just a
little bit too lazy of late...I will post it.  I am sort of excited
about it.

    And just to assure everybody, this VCO does not use any hard to find
parts...well, maybe the J111 Fet might be a little tricky, but it is the
only one.

--
 -Jim
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* Visit:http://www.silcom.com/~patchell/
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*I'm sure glad Merry Christmas comes just once a year
* -Yogi Yorgensen
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