Chapter 9 – Antenna and Feed Lines &
Chapter 10 – Topics in Radio Propagation
Antennas and propagation are the heart of what makes radio a unique form of communication. Amateurs enjoy building and experimenting with antennas, one of the most active areas of experimentation. Amateurs have also excelled over the years in ferreting out new and useful modes of propagation. Resources for these two sections of the Extra Class exam will support you as you study.
Antennas
Transmission Lines
Propagation
Beacon Stations
Solar Activity and Geophysical Information