Crystal radio kit, need some help figuring out how it works

[Ed in Tx]

Originally Posted by old_tv_nut

Did anyone mention that you need a long wire antenna, like on the order of 30-50 feet?

I used to use the aluminum window frame in my bedroom for an antenna. Worked great! Growing up in a house within a few miles of AM transmitters at 1080, 1310 ans 1480 kHz I could pick up all 3 stations mixed together at the same time. Simple crystal sets are not very selective.