ASHEJUN CRYSTAL RADIO

Crystal Radio with 3200ohm military headphones.

I named the pen crystal radio because the body was made of a pen

Crystal radio key chain.

I named the radio crystal card because it uses the body of the card.  For a scheme that uses a 456 crystal resonator maybe the first in the world because I myself have never found a crystal radio scheme that uses a 456 filter and I made it.

I named the spider crystal radio according to the windings I made like a spider's web and place 2 detectors, 3DQ MOSFETs and germanium diodes in the form of spiders.