The antenna and the station tuning coils are wound on the phenolic tube.A powdered iron (ferrite) slug is inside the tube between the two coils.AM dial (around 1600) I know there is a very strong Mexican station.
US Armys BC-14SCR-54, also used antenna tuning, light coupling. I started wondering if the crystal radio could pick them up too. Americas own brand of the Talaban and they feature real people talking. Imagine that we have a crystal radio like the one above connected to a. The 1,400 KHz signal that has been coupled to the station tuning. When the diode detector chops off part of the radio frequency. Most crystal radios use only one half of a radio frequencys wave. Heres what the circuit now looks like with two earphones connected to. Internet. When you can test these predictions for yourself by. ![]() If you have any detailed comments, questions, complaints or suggestions, I would be grateful if you would please E-mail me directly. An Armstrong Crystal Radio from The Old Geezer Electrician If you are looking to build something with the same great performance as the Armstrong Crystal Radio, but looks a whole lot nicer, I would like to suggest. ![]() If you are interested in simple vacuum tube regenerative radios, perhaps you would like to read the story of My. Armstrong regenerative radio I built in 1958 This is the radio that launched my career in electronics and which the Armstrong Crystal Radio is based on. Perhaps you would like the story of my Armstrong regenerative radio.
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