Author: Johnson Francis

I tried to make a loaded coil dipole antenna for 160m and ended up having a reasonable SWR at 80m! Current configuration is 12.5m of wire before coil

Usually, we tune dipole antennas by folding back terminal ends so that it is easy to restore previous length if needed. Same strategy does not seem to work

160m was the lowest radio frequency band allocated to radio amateurs before the adoption 630m and 2200m bands by many countries in the beginning of 21st century. It

Automatic antenna tuner of my FT-710 radio has the ability to tune an SWR up to 3:1. But sometimes the radio refuses to even try tuning. Here are

Impedance of the antenna has both real and imaginary parts. Real part is the resistance while imaginary parts are the reactances. Reactances can be either inductive or capacitive.

Odd harmonic resonances of 80m dipole antenna, center fed and mounted in inverted V configuration, being checked by a NanoVNA. Third harmonic, fifth harmonic and seventh harmonic near

Moxon Yagi for LEO satellite operations has elements for VHF and UHF, but only a single feedpoint. Driven element and Reflector are Moxon VHF elements. Driven element is

I have used my HF Fan Dipole for VHF/UHF Satellite Communication successfully a few times! Checking resonance with NanoVNA on those bands to see how the very high

I am trying to use Ham Radio Antenna for FM Radio as I already have it installed outdoors! Multi-band inverted V fan dipole antenna has its apex at

Here is a $3 FM Radio Board with Remote, Bluetooth and More! It has provision for MP3, USB port and auxiliary input. This video covers the initial assembly