[Lowfer] 10 MHz OCXO for W1TAG sound card calibrator

[Zack Widup]

I haven't tried one of those yet. The price is reasonable.

I have a bunch of OCXO's from different manufacturers. They all have
either a mechanical (trimmer cap) or electrical means of adjusting and
calibrating them. Most warm up to adequate stability in 5 to 15
minutes. Three minutes is great!

I have a rubidium standard I calibrate mine to once a month or so. I
have never needed to GPS lock any of my OCXO's yet. They are pretty
stable and accurate as they are.

73, Zack W9SZ

On 2/15/14, Dexter McIntyre W4DEX <dexter.mc at gmail.com> wrote:
> I received the 10 MHz OCXO from Paul today.  From a cold start,
> approximately 65F, it took only 3 minutes for the oven to warm up and
> start regulating.   The initial 12 volt current was only 500 ma and went
> down to about 150 ma after warm up.  With one channel of a dual trace
> scope triggered by 10 MHz from the GPS locked output of a HP Z3801 the
> OCXO trace on a second channel was barely creeping after the 3 minute
> warm up.  I tweaked the OCXO trace dead on with the Z3801 and after
> several hours it has not moved.
>
> Dex
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