New Print and Downloadable Material-Always Updated! ■ Simple SLA Float Charger project by John Boal, K9JEB ■ Amateur Radio Data Platforms by Paul Verhage, KD4STH, and Bill Brown, WB8ELK ■ The latest information on WSJT-X digital modes by the WSJT team ■ Filter and circuit design software by Tonne Software and Jim Tonne, W4ENE-download only ■ Low-Noise VHF and UHF Oscillators by Ulrich Rohde, N1UL, and Ajay Poddar, AC2KG ■ Update on Solar Cycle 24 by Carl Luetzelschwab, K9LA ■ Updated SSTV practices and technology by Larry Peterson, WA9TT-download only ■ Designing dual-band loaded dipoles by David Birnbaum, K2LYV-download only ■ Latest transceiver survey by Joel Hallas, W1ZR-download only Plus, new component tables, reference articles, material characteristics, and guidelines for SDR design. Each edition contains new and useful material to support Amateur Radio activity from the traditional short- and long-wave frequencies through microwaves! Key Topics ■ Radio electronics theory and principles ■ Circuit design and equipment ■ Radio signal transmission and propagation Digital and analog modulation and protocols and transmission lines ■ Construction practices ■ ■ Antennas Who reads The Handbook? Amateur Radio operators, or “hams ” professional wireless communication engineers and system designers electrical engineers students and instructors of engineering, physics, and geoscience. Now in its 96th edition, The Handbook continues to advance the pursuit of experimentation and innovation by radio amateurs and professionals.

Since 1926, The ARRL Handbook has been a trustworthy source of introductory, applied, and theoretical information. The ARRL Handbook for Radio Communications is a complete reference and guide to radio technology principles and practices. Experimentation, Discovery, and Achievement.

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