Discussion:
[time-nuts] Wenzel 100 MHz Oscillators (w/ EFC) available
Skip Withrow
10 years ago
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Hello time-nuts,

Please excuse the blatantly commercial announcement, I generally keep
business matters off the list, but I have some Wenzel oscillators that may
be of interest to time-nuts and wanted to give you first crack at them.

These are Wenzel 500-06769 units, custom number for Harris used in
microwave radios. Output is 100MHz at +20dBm. Supply input is +12 volts
DC (about 500mA at start). EFC runs between 0.5V and 4.5V with positive
coefficient and is about 335Hz/V.

Unit is in standard 2" x 2" x .75" package. Output connector is female SMA.

These would make great units for synthesizer and DDS projects. I don't
have the ability to measure the phase noise, but should be relatively good
as they were used at microwave frequencies in their past life.

I'm asking $50 each for them and $7 (any quantity) Priority Mail shipping
to U.S. addresses only. If you would like one (or more) please PayPal to
***@rdrelectronics.com. I have attached a picture of one unit with the
pinout.

Regards,
Skip Withrow
RDR Electronics, Inc.
303-790-1830 8am-5pm M-F
John Miles
10 years ago
Permalink
Post by Skip Withrow
These would make great units for synthesizer and DDS projects. I don't
have the ability to measure the phase noise, but should be relatively good
as they were used at microwave frequencies in their past life.
I'm asking $50 each for them and $7 (any quantity) Priority Mail shipping
to U.S. addresses only. If you would like one (or more) please PayPal to
pinout.
I have a few of the 500-6769 parts here, and measured a couple of them awhile back:
Failed to load image: 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. :)

-- john, KE5FX
Miles Design LLC

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Gerhard Hoffmann
10 years ago
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Post by John Miles
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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Jim Sanford
10 years ago
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Skip:
I would like one, if you have any left.
How do I pay?
Thanks,
Jim
...
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