[Milsurplus] BC-221Tempature compensating Capacitors question

John Hutchins olegerityincj at austin.rr.com
Wed Feb 4 18:00:18 EST 2009


John -

Yes missed some places; it is a typ O 1000.122 KHz at cold startup,  
drops real fast 1000.050 Khz  drifts to 10000.020 Khz after 1 hour  Hits 
1000.000 around the  2 hour mark
Later
Hutch
J. Forster wrote:
> If the data you present here is correct, you have some other problem. No
> 1000 KHz crystal should ever oscillate at 1220 KHz. 1220 Hz off, maybe,
> but even that seems excessive.
>
> FWIW,
> -John
>
>
>   
>> The Crystal Reference Oscillator starts high 1220KHz. As the unit warms
>> up after 2 hours the Crystal Oscillator comes down to 1000KHz +20 -0 Hz
>>     
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