I think old Mr Burban has keyed a radio a few times.its as if you were involved
Commenting on things you don't have a idea what you are talking about.
The Davemade rod of God is a full size 1/2 wave radiator, the coil at the bottom is the matching device
Your math and your theory need work the Rod of God isn't a loaded antenna again I will tell you the coil is a matching device the end of the 1/2 wave is a high impedance so it needs a matching network. That antenna will provide 2- 3 db from a 1/4 wave mounted on same vehicle. Go smoke some more hash and make up some more BS, the only picture I get is you are clueless about this antenna. You have never owned one nor have you ever used one and I am sure you never tested one.
So the "Rod of God" is 18 feet tall and the coils and caps are the matching network?
If that's the case, I rescind all comments, as the antenna is clearly not a mobile antenna, thus, cannot be measured against other mobile antennas as most states cap out your maximum height from the ground up at approximately 14 ft.
the tapped coil is the matching network .
i dont know what the glass caps are for ...... maybe they hold some secret RF sauce .
i wonder how much torque from the vertical those glass caps can handle
Booty, look at the picture, see the two Vari Cap`s, ( C1 and C2 ) one above the coil, and one paralleled with the coil.......take out the Vari caps, and insert the Vacuum Caps, now you are looking at the same thing.
the tapped coil AND glass caps are the matching network .
Very very little, it was NEVER designed to be a "drive around" antenna.
73
Jeff