Total posts : 45366
[quote:97261abb3e]How does the wire from the bottom of the coil connect to transmitter?[/quote:97261abb3e]
The center terminal of the antenna output is connected to the bottom end of the coil, and the top end of the coil is connected to the base of the mast (copper pipe), so that the xmtr output flows from the antenna terminal through the coil and then to the mast. The plastic pipe core serves as both an insulator and a structural component holding up the copper pipe radiator
The ground side of the xmtr output is connected to the ground rod or water pipe or what ever else you are using for a ground.
[quote:97261abb3e]Is there a reason for the black pipe?[/quote:97261abb3e]
As I understand it, the color of the pipe used is not important at AM broadcast frequencies. Again, as I understand it, the notion that the color is important only comes into play at ham band frequencies of very short wavelengths, like 440 MHz. The wavelength of an AM broadcast frequency is hundreds of feet long, and so doesn’t really react to the pipe pigment.
Here’s a schematic view of the xmtr connections