Trapped dipole for 40-80-160 meters

Build a space efficient trapped dipole antenna for 40-80-160 meter bands using RG-58 and PVC pipe.
The document provides a brief guide on building a compact dipole antenna appropriate for the 40, 80, and 160-meter amateur radio bands. It explains the materials, building processes, and tuning methods required to provide best performance while preserving space. The paper also discusses theoretical elements of dipole antennas, such as impedance matching and feedline selection.