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An easy-to-follow, step-by-step design framework for a wide variety of power supplies.
Gain the knowledge and confidence you need to build and use power supplies. A must have for your bookshelf!
Design and build your own antennas! Provides clear answers to questions frequently asked by hobbyists and electronics technicians.
Gain a working knowledge of DSP applications, including communications and process control.
Now you can work the world with low power!
Over 1,600,000 licensed amateurs! Includes International and North American listings and prefix maps.
Embrace the exciting new technology of Raspberry Pi!
An introduction to the revolutionary small computer. Ideal for those switching on their Pi for the first time.
Fast-paced thriller in which ham radio plays a pivotal role in foiling a secret government project to breed super soldiers using Neanderthal DNA.
Explore the magic of Amateur Radio with author and active Amateur Radio operator Don Keith, N4KC.
Special Event Stations, DXCC Program, Operating Resources, Awards, QSL Service, Operating Specialties, Contests, Logbook of the World, Amateur Code, W1AW, Centennial QSO Party, International Operating
FCC License Info and Forms, Volunteer Instructors/Mentors, Courses & Training, Getting Licensed, What is Ham Radio, Volunteer Examiners, College Students and Educators, Amateur Radio in the Classroom, Get on the Air, License Certificates
Join ARRL/Renew Membership, Member Directory, myARRL, Membership Certificate, Membership Levels, Member Support, Member Discounts
State and Local, Technical Relations Office, Volunteer Consulting Engineer Program, Volunteer Counsel Program, Antenna Regulation and Zoning, CCR Study Information, International, Federal RFI Preemption, Federal
Public Service Honor Roll, Ham Aid, Public Service Resources, NTS, Served Agencies and Partners, ARES
ARRL References, ARRL Lab, Radio Technology Topics, Radio Frequency Interference (RFI), Tech Portal
Volunteer Opportunities, Youth, Hamfests and Conventions Calendar, Recruiting & Outreach, The ARRL Foundation, Clubs, Donate to ARRL
ARRL Publication Dealers, ARRL Store, List all Products, Periodicals, Customer Service/Support, Shipping, Product Notes
ARRL, the national association for Amateur Radio
225 Main Street
Newington, CT, 06111-1494 USA