Displacement Currents
Displacement current explains why the ends of dipole antennas have something more than zero current.
Of fields and feedpoints
Understanding how feed position along the half-wave dipole antenna affects the electric and magnetic fields around it.
The dipole antenna, how industry defines it
Is a dipole antenna defined by its behavior alone or also how one energizes it? The answer exists in IEEE and historical literature.
Slim Jim vs. Traditional J-pole Antenna
Real measurements of a Slim Jim antenna and traditional j-pole antenna reveal the truth about their respective gain and pattern.
NVIS Gain of Loop and Dipole vs. Height
Observations from the Virginia QSO Party confirm simulation results concerning horizontal antennas and NVIS propagation.
Asy Hat Vertical Dipole
We re-introduce the theory and origins of Cebik’s (W4RNL) Asymmetrical Hatted Vertical Dipole (AHVD) antenna with the hope to facilitate a vertical polarization portable 20-10m aerial for portable operations.
Wideband 80m Dipole
A 1/4 wavelength of 75 ohm coax inline with a full wavelength of 50 ohm coax is all one needs to make a simple 80m dipole become a wideband dipole antenna.
Dipole Generates Static in PL-259
“Shocking” evidence our aerials collect electric charge plus an educational video on the topic of static electricity.
JOTA Antenna Need Not Be Fancy
Keep it simple for the Jamboree on the Air – Use a ladder line fed dipole.
Why don’t hams like vertical dipole antennas?
Tom, ke6ynh, asks… “Why don’t hams like vertical dipole antennas.
