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

[vortalexfan]

I can get WLS from Chicago in where I live, during the day and During the Night, I can also get WOWO out of Fort Wayne, Indiana where I live, I can also get WLW out of Cincinatti, Ohio really well in the evening and fairly well during the day, and I can get WGN out of Chicago really well during the day and night, as well where I live. Just to give you an idea of the stations I can get in where I live on the AM Dial, all of the Aforementioned stations are 50kW stations.