[time-nuts] cheap 5V OCXO in 14DIP has about 1E-9 drift per day

Peter Loron peterl at standingwave.org
Thu Apr 7 18:43:47 UTC 2011


I can't speak for anybody else on the list, but if there was an 
inexpensive converter to get a good stable 10MHz signal from one of the 
cheap 26MHz OCXOs, I'd sure be interested in building/buying one.

-Pete

On 04/06/2011 06:23 PM, Greg Broburg wrote:
> Hi Pete;
>
> I bought 10 of these from you already. Im working on
> a converter that has 26M00 Hz in to 10M00 Hz out.
> Not sure if that is of any interest but Im putting it on
> the table.
>
> Greg
>
> On 4/6/2011 3:56 PM, Peter Loron wrote:
>> Hello, folks. I'm the seller of the 26MHz OCXOs. Please reply off 
>> list if you are interested in some. Thanks.
>>
>> -Pete
>>
>> On 04/06/2011 08:58 AM, Oz-in-DFW wrote:
>>> Who is the seller?
>>>
>>> On 3/28/2011 1:40 PM, beale wrote:
>>>> Just FYI, I'm not sure how this compares to other similar parts, 
>>>> but I'm seeing about +/- 1 ppb (1E-9) frequency drift per 24 hour 
>>>> period from one sample of the Pletronics OHM40480526, which I've 
>>>> had running for about 10 days now. It runs on +5V and after a 
>>>> warmup current of 250 mA for a few seconds, it draws about 60 mA 
>>>> steady state at room temperature.  I'm driving the tuning voltage 
>>>> on pin 1 from a separate +5V reference to avoid variations due to 
>>>> heater current shifts.  I use a simple resistive trimpot divider to 
>>>> set the voltage, this is not a GPSDO (yet :-).
>>>>
>>>> I'm sure most on this list have more refined tastes in oscillators 
>>>> than this one (and probably want 10 MHz instead of 26 MHz), but I 
>>>> thought it noteworthy because it is so cheap. These parts are 
>>>> currently available online for $2 each. I'm not affiliated with the 
>>>> seller.
>>>>
>>>> a few more details:
>>>> http://www.bealecorner.org/best/measure/time/Pletronics-26MHz-OCXO-tuning.pdf 
>>>>
>>>> http://www.bealecorner.org/best/measure/time/26MHz-osc-notes.txt
>>>>
>>





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