Making An Old-fashioned Radio – Progress#1

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…

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.

Reference