/diy/ - Do It Yourself

>>795920
the thickness of the antenna is irrelevant, as is the type of wire (solid or stranded).

you cant use regular headphones to listen to a crystal radio, coz they require too much power. you need either an amplifier or high-impedance speakers, around 2000 ohms. ordinary earbuds are 32 ohms.

I'm pretty sure the speaker from these vintage 1970's type phones would work. I have one, and it's very high impedance, and very sensitive.