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100 uH coil


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Hi Staigen,
Didn't you see my FM transmitter? I found some tiny variable caps to tune it, it has a low-distortion preamp with proper selectable pre-emphasis, the preamp and oscillator have a low-dropout regulator, it has an RF amplifier/buffer so that it doesn't change its tuning if something gets near the antenna and its range is more than about 2km. My FM band is full, so to test it I had to use the same frequency as a foreign-language low-power station on the other side of my city. ;D 

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