给你一个连接：矿石收音机。

zhwb

给你一个连接：矿石收音机。
http://www.tompolk.com/crystalradios/Homebuilt/crystalradio.html

<img src="attachments/94kk/200641115271598.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt='Click here to open new window
CTRL+Mouse wheel to zoom in/out';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor='hand'; this.alt='Click here to open new window
CTRL+Mouse wheel to zoom in/out';}" onclick="if(!this.resized) {return true;} else {window.open('attachments/94kk/200641115271598.jpg');}" onmousewheel="return imgzoom(this);" alt="" />
<img src="attachments/94kk/200641115273598.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt='Click here to open new window
CTRL+Mouse wheel to zoom in/out';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor='hand'; this.alt='Click here to open new window
CTRL+Mouse wheel to zoom in/out';}" onclick="if(!this.resized) {return true;} else {window.open('attachments/94kk/200641115273598.jpg');}" onmousewheel="return imgzoom(this);" alt="" />

天地会

另存了。