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which type of oscillator!

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how to make it a FM transmitter

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is this a Fm Tx of 10Mhz
 

Your circuit is an AM transmitter if the oscillator works.
A crystal has only one frequency. You can shift its frequency only a tiny amount which is not enough for FM audio.

Modern FM stereo transmitters use a frequency synthesizer with a crystal and use a phase-locked-loop to modulate its frequency. The MP3 to car radio transmitters use the BH14xx line of ICs.
 

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