[time-nuts] Inside a CTS 1960017 OCXO

Bob Camp kb8tq at n1k.org
Sat Feb 27 16:25:52 EST 2016


A small air gap is actually a better insulator than conventional foam. You don’t get
much of a convection cell going at those spacings. The part likely pulls a bit over a 
watt at room.

If you put an insulator on the gizmo you increase it’s thermal gain. That will most likely 
make the temperature performance significantly worse. See the good old papers on the 
HP super ovens for all the details.


> On Feb 27, 2016, at 12:44 PM, Tom Miller <tmiller11147 at verizon.net> wrote:
> ----- Original Message ----- From: "Daniel Watson" <watsondaniel3 at gmail.com>
> To: <time-nuts at febo.com>
> Sent: Saturday, February 27, 2016 11:48 AM
> Subject: [time-nuts] Inside a CTS 1960017 OCXO
>> Hi,
>> I'm sure many of you are tracking the cheap CTS 10MHz OCXOs available on
>> eBay right now. I purchased a case of them, and decided to crack one open.
>> I took pictures along the way, thinking that might be interesting to the
>> list. Here is the blog post if you are interested:
>> http://syncchannel.blogspot.com/2016/02/10mhz-ocxo-teardown-cts-1960017.html
>> Comments on the internal construction of the OCXO are welcome. It seems
>> pretty straightforward inside though.
>> Best regards,
>> Dan W.
> Looks like it would use a lot of power in a cold environment. Maybe a second oven would be nice. They seem to have marked the turnover temp on the xtal.
> Regards 
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