[time-nuts] Still looking for a schematic drawing for Oscilloquartz 8600-3 (945.860.011.03 S/N 422)
ed breya
eb at telight.com
Thu Oct 25 22:30:46 UTC 2018
It seems rather drastic to scrap a basically working unit for lack of
info. If you can't find anything, then there's a wide range of
possibilities - you've got nothing to loose then, so try tweaking the
circuit design a little. It should be evident where the coarse tuning
and oscillator circuitry is. If the oven is operational and gets hot,
then assume its temperature is about right, or measure and compare to
any markings inside - many OC crystals I've seen have the turnover
marked right on them, or on the assembly. Then figure out just the
coarse tuning section circuit, and you'll be able to see how to move the
frequency a hair either way, usually by changing the value of a fixed
capacitor (but can sometimes be done by changing an inductor) in the
oscillator.
Good luck.
Ed
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