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Handbook 100
We have arrived at a milestone. The 100th edition of The ARRL Handbook for Radio Communications is here: Handbook 100. How do you celebrate the most widely used one-stop reference and guide to radio technology principles and practices? By continuing to fill the pages of another edition with the progress and achievement of radio amateurs. Handbook 100 is written for everyone with a desire to advance the pursuit of wireless technology. Here is your guide to radio experimentation, discovery, and innovation.

What’s Inside

Each chapter is filled with the most up-to-date knowledge representative of the wide and ever-expanding range of interests among radio amateurs. There are practical, hands-on projects for all skill levels — from simple accessories and small power supplies to legal-limit amplifiers and high-gain antennas.
Chapter 1

Chapter 1
What is Amateur (Ham)

1.1 About this Book
1.2 Structure of Amateur Radio
1.3 Amateur Radio Licensing in the US

Chapter 8 - 2023 Hbk - Fig 8.5 C - LABELS - NEW

Chapter 8
DSP and SDR Fundamentals

8.1 Introduction to DSP
8.2 Introduction to SDR
8.3 Analog-Digital Conversion
8.4 Data Converters for SDR and DSP
8.5 Digital Signal Processors
8.6 Digital (Discrete-time) Signals
8.7 The Fourier Transform

Chapter 9 - HBK1094_Page_1

Chapter 9
Oscillators and Synthesizers

9.1 How Oscillators Work
9.2 LC Variable Frequency Oscillator (VFO) Circuits
9.3 Building an Oscillator
9.4 Crystal Oscillators
9.5 Oscillators at UHF and Above
9.6 Frequency Synthesizers
9.7 Phase Noise

Chapter 11 - HBK1116

Chapter 11

11.1 Introduction
11.2 Amplitude Modulation (AM)
11.3 Angle Modulation
11.4 FSK and PSK
11.5 I-Q Modulation
11.6 Applications of I/Q Modulation
11.7 Image Modulation
11.8 Spread Spectrum Modulation
11.9 Pulse Modulation
11.10 Modulation Bandwidth and Impairments

Chapter 15 - Figure 15.18

Chapter 15
Digital Protocols and Modes

15.1 Digital “Modes”
15.2 Unstructured Digital Modes
15.3 Fuzzy Modes
15.4 Structured Digital Modes
15.5 Networking Modes and Systems
15.6 Digital Mode Table

Chapter 17 - 2023 Hbk Ch 17 Figure 17.47A

Chapter 17
RF Power Amplifiers

17.1 High Power, Who Needs It?
17.2 Types of Power Amplifiers
17.3 Vacuum Tube Basics
17.4 Tank Circuits
17.5 Transmitting Tube Ratings
17.6 Sources of Operating Voltages
17.7 Tube Amplifier Cooling
17.8 Vacuum Tube Amplifier Stabilization
17.9 MOSFET Design for RF Amplifiers
17.10 Solid State RF Amplifiers
17.11 Solid-State Amplifiers and Intermodulation Distortion
17.12 Adaptive Predistortion

Chapter 19 - Figure 19.33B

Chapter 19
Propagation of Radio Signals

19.1 Fundamentals of Radio Wave Propagation
19.2 The Sun and Solar Activity
19.3 Sky-Wave or Ionospheric Propagation
19.4 VHF/UHF Non-Ionospheric Propagation
19.5 Propagation Predictions for HF Operation
19.6 VHF/UHF Mobile Propagation
19.7 Special Propagation Modes and Topics

Chapter 21 - Figure 21.59

Chapter 21

21.1 Antenna Basics
21.2 Dipoles and the Half- Wave Antenna
21.3 Vertical (Ground-Plane) Antennas
21.4 T and Inverted-L Antennas
21.5 Slopers and Vertical Dipoles
21.6 Yagi Antennas
21.7 Quad and Loop Antennas
21.8 HF Mobile Antennas
21.9 VHF/UHF Mobile Antennas
21.10 VHF/UHF Antennas
21.11 VHF/UHF Beams
21.12 Radio Direction Finding Antennas
21.13 Rotators
21.14 Antenna Material Tables

Chapter 23 - Figure 23.17 NEW

Chapter 23
Construction Techniques

23.1 Electronic Shop Safety
23.2 AC and Power Connectors
23.3 Soldering Tools and Techniques
23.4 Surface Mount Technology (SMT)
23.5 Constructing Electronic Circuits
23.6 PCB CAD and Fabrication
23.7 Microwave Construction
23.8 Tools and Their Use
23.9 Mechanical Fabrication
23.10 3D Printing

Chapter 25 - Figure 25.A1 - Voltmeter Ratings

Test Equipment and

25.1 Measurement Fundamentals
25.2 Basic Test Meters
25.3 Frequency Counters
25.4 Signal Generators
25.5 Inductance and Capacitance Testers
25.6 Oscilloscopes
25.7 Spectrum Analyzers
25.8 Impedance, Antenna, and Network Analyzers
25.9 Testing Digital Modulation
25.10 Software-Based Instruments
25.11 RF and Microwave Test Accessories
25.12 Making Basic Measurements
25.13 RF Measurements
25.14 Using a Spectrum Analyzer
25.15 Antenna System Measurements
25.16 Receiver Measurements
25.17 Transmitter Measurements

Key topics:

  • Radio electronics theory and principles
  • Circuit design and equipment
  • Signal transmission and propagation
  • Digital modulation and protocols
  • Antennas and transmission lines
  • Construction practices

Updated with new projects and content, including:

  • An all-new chapter on radio propagation covering a wide range of bands and modes
  • New and updated sections on electronic circuit simulation
  • New cavity filter and high-power HF filter projects
  • New coverage on digital protocols and modes
  • New material on RFI from low-voltage lighting and other sources
  • Revised sections covering new RF exposure limits
  • New content on portable station equipment, antennas, power, and assembly
  • New material on ferrite uses and types
  • New section on how to use portable SDR to locate sources of RFI …and more.

Handbook 100 Collections

Collectors Edition - Left Book
Collector’s Edition Hardcover
Includes e-book edition
Order Now
6 Volume Paperback
Includes e-book edition
Order Now

For decades, The Handbook has empowered radio amateurs and professionals alike with its do-it-yourself approach, finding its way onto workbenches and operating desks, and into technical libraries and institutions. Who uses The Handbook? Radio amateurs or “hams,” engineers working in radio electronics and communications industries, electrical engineers, data communication engineers, physicists, geophysicists, and more.

Hardcover Collector’s Edition

To commemorate this special edition, a collector’s edition of Handbook 100 is strikingly hardbound in a textured black finish with silver foil embossing. The collector’s edition includes a special insert looking back across decades of content that built The Handbook’s reputation as a “must-have” for the radio experimenter. This special section celebrates The Handbook's evolution across decades of technological innovation and growth of ham radio. It’s a retrospective told through previous edition covers and pages.

Also available is a 6-volume paperback edition (sold separately).

A Leap Forward

Handbook 100 is by far the most extensively revised and expanded edition in recent years — including new and revised topics, content, and projects. It is written by radio amateurs who share their experience, learning, and discovery from across the state-of-the-art and emerging technologies. Each chapter is authored and edited by experts in the subject.

The ARRL Handbook for Radio Communications strikes the perfect balance between comprehensive RF engineering reference and practical treatment of basic electronic fundamentals, circuit design and equipment construction, antennas, transmission lines, safe electrical, RF practices, and more. It is The Standard.

About ARRL

ARRL The National Association for Amateur Radio® is a membership organization that numbers within its ranks the vast majority of active radio amateurs (or “hams”) in the United States. Founded in 1914 by Hiram Percy Maxim as The American Radio Relay League, ARRL has a proud history of achievement as the standard-bearer in promoting and protecting amateur radio. ARRL role as amateur radio’s witness, partner, and forum, is defined by five pillars: Public Service, Advocacy, Education, Technology, and Membership. For more information about ARRL and amateur radio, visit


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"Every radio electronics hobbyist should read this book."
Ellipse 2
“Pretty much everything you need to know about selecting, building, and maintaining a ham radio station.”
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“A must. I didn't realize how much information was in this Handbook until I purchased it.”
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“The ARRL Handbook is the most useful book for engineers and non-engineers alike.”
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“Covers all the basics a ham needs to know and more.”