This is a typical vertical. You can almost see the guy wires which double as a top hat. It is made of three 12-foot 2x4s mounted on an 8-foot 2x4 buried in the ground. The overall height is 23 feet. The top hat wires are also 23 feet long, sloping at a 45-degree angle. The combination of wire is resonant around 3.5 MHz. With a 30 uH inductor, the resonance becomes about 1.83 MHz. A series 68-ohm resistor and 16 25 foot radials brings the feed point impedance to 75 ohms. The box in the foreground contains a relay and phasing line that switches the favored direction from northeast to southwest. Power for the relay is decoupled from the feed line.