3 ms·
That's such a pity. Building a simple AM radio receiver was a simplest and coolest electronics project to do with kids. You need two transistors, a ferrite coi
by alentred 4mo ago
That's such a pity. Building a simple AM radio receiver was a simplest and coolest electronics project to do with kids.
You need two transistors, a ferrite coil and a small set of simpler elements. And it is so simple you can actually explain what every part of the circuit does.
And then the reward... Once built you could listen to BBC regardless of where you are in Europe. My kids just LOVED IT, no Netflix K-Drama replaces this experience. My daughter was listening to BBC on her radio every night going to sleep.
- raverbashing 4mo agoLook at this fancy pants needing a transistor for that /s (but yes I do miss those simpler days - but I guess the basics now is making an Arduino flash an LED)
- mpweiher 4mo agoWe did that in my physics high school class. Then we took away components until we had virtually nothing left, a diode I think(?), and still we had some signal. Turns out there was a transmitter on the top of the hill the school was also on. Fun times.
- HPsquared 4mo agoWith enough power anything is possible... If you put random vegetation directly on the radio mast (NOT recommended!), it makes sound directly- https://youtu.be/b9UO9tn4MpI https://youtu.be/b9UO9tn4MpI
- 8bitsrule 4mo agoHmmm, fancy indeed. With 150kW feeding a dipole at 700 feet, I imagine that a cat's-whisker [0] would have done well-enough in London... [0] https://en.wikipedia.org/wiki/Crystal_detector https://en.wikipedia.org/wiki/Crystal_detector
- Symbiote 4mo agoYes, I did exactly this in England 30 or so years ago. It was one of the suggestions in an electronics kit for children, the one with springs to connect the components together.
- jcsager 4mo agoMy dad helped me build a crystal set when I was about 7. I still remember listening to a serialisation of Lorna Doone on the (MW) Home Service on headphones under the bedclothes. Sad that the LW sevice had to close but the BBC is short of cash and it won't get better either.