Ham Radio Base Antenna Build Guide

The Complete Ham Radio Antenna Build Guide - Volume 1: HF Wire & Loop Antennas

Every antenna journey in amateur radio starts the same place: a length of wire, a feedpoint, and the question of how to get it up in the air. Volume 1 of the Complete Ham Radio Antenna Build Guide is that starting point - and it takes wire and loop antennas further than most operators ever realize they can go. This is the foundational volume of a 5-volume series that takes you from your first dipole to advanced directional arrays, and it's built to get you on the air with a working antenna as quickly and correctly as possible.

The book opens with the half-wave dipole, the antenna every ham eventually builds and the one every other wire antenna in this volume is measured against. You'll learn not just how to cut one to length, but why it behaves the way it does - feedpoint impedance, radiation pattern, and how height above ground changes everything about how it performs. From there, the doublet gets its own treatment as the multiband cousin of the dipole, fed with ladder line and a tuner to work bands a single-length dipole never could.

End-fed half-wave (EFHW) antennas get a full, practical build-out, including the matching transformer construction that makes them work - the 49:1 unun windings, core selection, and the counterpoise considerations that trip up so many first-time builders. Off-center-fed dipoles (OCFDs) follow, along with a clear explanation of why the offset feedpoint changes the impedance and how that translates into the transformer ratio you need. The venerable G5RV gets its own chapter too, including an honest look at what it does well, where it compromises, and how to build one that actually performs the way its reputation suggests.

The second half of the volume moves into loop antennas - a category many antenna books treat as an afterthought, but one that gets real depth here. Magnetic loop antennas are covered from theory through construction, including the high-Q tuning capacitor considerations and coupling loop design that make a small transmitting loop actually work rather than just look impressive. Full-wave loops and delta loops follow, with construction guidance for both horizontal and vertical orientations and a clear comparison of how their radiation patterns differ from a simple dipole at the same height. The volume closes with receiving loops - small, often overlooked antennas that can dramatically improve your ability to pull weak signals out of the noise on the lower HF bands, especially valuable for anyone dealing with a noisy urban or suburban RF environment.

Every antenna in this book follows the same structure: a clear explanation of the theory behind the design, a complete materials list, step-by-step construction instructions, a dimensions table you can adapt to your target frequency, and a tuning and SWR verification process using a NanoVNA or antenna analyzer. This isn't a book of antenna theory to read and set aside - it's a build guide meant to sit next to you in the workshop while you're winding a balun or cutting wire to length. Interactive online calculators at hamradiobase.com/ham-radio-antenna-build-guides complement every chapter, letting you enter your exact target frequency and get real dimensions rather than scaling a table built for a different band.

Whether you're a brand-new operator building your first dipole, a seasoned ham looking to add a magnetic loop to a restricted lot, or anyone in between who wants to actually understand what's happening at the feedpoint instead of just copying a formula, Volume 1 gives you the foundation the rest of the series builds on - and gets you making contacts with a wire antenna you built and understand yourself.

Terry L. Barlet (N0TLB) is an Amateur Extra Class radio operator and the founder of Ham Radio Base, a comprehensive online resource built to help amateur radio operators at every level understand and build their own equipment. What started as a reference site has grown into an 1200-page library covering antenna theory, radio electronics, construction guides, and hands-on tools for the amateur radio community.