3.7v BF494 fm radio

250

02:15:35

region fm radio. its designed by me at 2020. its tested and working well.
5.2pf capasitor( at the left) must connect to the antenna
8ohm resistor( at the right) is speaker
oscillator transistor is bf494

260nh coil:
4 turn
loop diameter 1cm
wire diameter 0.8mm

30pf capasitor is variable to tuner

100microh coil is RFC

published 3 years ago

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