At your responsibility.
At your risk.
Safety.
About radio part 41 quality audio FM transmitsr
https://m.youtube.com/watch?index=3&list=UUzEeZM7nzH02_BIM5zkU2tg&feature=plcp&v=8Vkeco8zS5g#fauxfullscreen
Also:
https://www.circuitsonline.net/forum/view/106140/2
And the simple and nice Jostykit HF65:
It had been great playing with my cousin when teenagers with 2 of them, voice radio communicating with electromagnetic waves in real time during afternoons.
It possibly needs audio preemphasis to counteract radio recover deemphasis.
A way may be (a resistor in parallel with capacitor) in series with audio signal for HF boost
Or similar arangment with inductor, resistor in parallel with audio signal etc
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