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Looking for manufacturer of VCXO with range from 50 to 80m

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jeanjean

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about VCXO need help

i need the detail to the manufacture of the VCXO,its frequency range from 50M to 80M.

thanks
 

Re: about VCXO need help

This may help:
**broken link removed**
 

about VCXO need help

Hello ,Vfone, Do you know how to calculate the load capacitance of the vcxo ?
 

Re: about VCXO need help

Load capacitance is the capacitance needed to be placed in series with the crystal to bring the frequency within the calibration tolerance.

In the document below you can find the equations of load capacitance, how to keep the ppm variation in the required range:
**broken link removed**
 

Re: about VCXO need help

Vfone
According to the description of article,

"It's important to note here that there's no difference between a series
and a parallel crystal, only where it is calibrated by the manufacturer"

Who is the manufacturer here ? Crystal manufacturer or
product manufacturer (ex: cell phone) ?

Thanks a lot.
 

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