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FM radio equation wanted

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mstechca

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I want to know how to determine the output frequency of an FM receiver given the carrier frequency and the modulator frequency.


This receiver is the one I made. The only way I can determine frequency is to keep switching capacitors in the tank circuit until I pick up a station that tells me the frequency. There are no labels to look at and I dont have a multimeter with the frequency function on it. I have recently bought a digital multimeter that can measure voltage, resistance, transistor hfe, and current.
 
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