Resistanceisfutile
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1) That is what I said, and is probably the main reason the crystal set is not working at allNot a chance of working!
why?
1: the ground should be real ground - preferably a rod driven into real Earth beneath your feet.
2: the tuning components are wildly inappropriate. Get a tuning (adjustable) capacitor and make to coil about 75 turns so it covers a lower frequency where you should find stong stations. Just aiming in the dark for a frequency that may have nothing on it will never work!
3: add a resistor of about 10K across the earphone. The value isn't critical, anything from about 4.7K to 47K will work equally well.
4: the antenna wire should be > 4m long, for lower frequencies you ideally want one about 50m long!
Brian.
Maybe you are thinking about high impedance (2k ohms) dynamic headphones? These ones are crystal (piezo?) which prevent the detector diode from doing anything since it has no load.3) You don't need the 10K resistor across the headphones, but depending on the headphones type a 10K resistor may reduce distortion.
Hi Buddy !Goldsmith,
Maybe in your country you do not have hundreds of radio stations in every direction like we have here. Then the single tuned circuit in a crystal radio causes very poor selectivity and you hear a few radio stations at the same time.
80 years ago when crystal radios were popular there were few radio stations so poor selectivity did not matter.
How many tuned circuits are there in a cheap AM radio? 5 or 6?
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