Am 05.12.2014 um 23:54 schrieb John Miles:
I have a few of the 500-6769 parts here, and measured a couple of them awhile
back:
http://www.ke5fx.com/Wenzel_500_06769_PN.png
Not a bad price at all. If a $2000 OCXO can achieve -140 dBc/Hz at 100 Hz and
a $50 OCXO will do -117, that's almost 10 dB better than the expected
20*log10($2000 / $50) ratio. :)
Ok, not an oven, but @100 Hz offset, that ElCheapo Crystek is on par.
If it was a few dB better far out, it would outwenzel the Wenzel,
phasenoise-wise.
-117 is not a heroic deed. And the oven makes it easier to get along with a
smaller tuning range, that helps a lot. Just forget these temperature corner
cases that are major stumble stones in XO design.
<
http://www.digikey.de/product-search/de?x=17&y=16&lang=de&site=de&KeyWords=cvhd950
>
regards, Gerhard
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