[time-nuts] Re: Vectron 380 teardown

[Bob kb8tq]

Hi

The design traces back to the Efratom “EMXO” from the 1980’s. 
Vectron bought the rights to that design and produced examples
of it for about a decade or so.

Bob

> On Jan 14, 2022, at 3:20 PM, Attila Kinali <attila at kinali.ch> wrote:
> 
> On Fri, 14 Jan 2022 17:44:22 +0000
> Poul-Henning Kamp <phk at phk.freebsd.dk> wrote:
> 
>> 	https://twitter.com/EvilMnkyzDsignz/status/1482039903995273216
> 
> Now that's an interesting design.
> My first thought was, "hell, using /two/ ceramic carriers
> for PCBs and using gold wires to connect them to eachother,
> that must have been a hell of an expensive DIL-14 oscillator".
> 
> Then I looked at the Datasheet [1] (ok appnote) and guess what,
> that's no mere oscillator. That's a bona-fide OCXO. Vacuum packaged,
> nonetheless! Sure, it doesn't have the best stability compared to
> other OCXO, but compared to other DIL-14 sized OCXO, it's actually
> quite good. And it's only the size of a regular XO too!
> And this also explains the need for ceramic: an FR4 PCB would$
> have too much outgasing that would then lead to drift.
> 
> Lovely device!
> 
> (Still think it's probably quite expensive)
> 
> 			Attila Kinali
> 
> [1] https://www.vectron.com/products/ocxo/EMXO-380-385.pdf
> -- 
> The driving force behind research is the question: "Why?"
> There are things we don't understand and things we always 
> wonder about. And that's why we do research.
> 		-- Kobayashi Makoto
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