I’m starting this post thread to discuss building minimal radios. I’ve always found them fascinating because even though they have the same principles, how you make them is entirely up to you. You have to follow the basic circuit design with to start. That is important to understand.
Now, let’s get started with the first one that I came across. I consider this one to look simple, but what I am going for is one where we don’t need as many parts. This one is courtesy of https://openideo.com/challenge/amnesty/inspiration/improvised-radio-transmitter and has a few parts that you can get fairly cheaply.