At the first time challenge, I made a mistake that I did not care about number of turns of an antenna then the first one is not working. But I favourite it as an interior for my room and I do not want to break it up…
So I have made new one.
Making a Bigger Antenna
Then I have caught my first radio wave by a following circuit.
It made me so excited, but I did not understand why the circuit generate sounds.
Making a Old-fasioned Coil
In addition, I have made a coil too.