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One of the most comprehensive guides to the theory and practice of Amateur Radio communication.
The quick, easy way to leap into the fascinating world of physical computing!
Discover all the amazing things you can do with Arduino!
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.
Tune in to the world of personal radio communications and scanners! Covers ham radio, CBs, aviation, marine radios, scanners and more.
Make something fascinating of electronics! Learn basic concepts and get going with projects from simple circuits to robots.
A fun and easy way to start building circuits for your projects!
Fun with homemade tubes, transistors, and more.
Reference information and designs for the microwave experimenter. Published by RSGB and ARRL.
Special Event Stations, DXCC Program, Operating Resources, Awards, International Operating, QSL Service, Operating Specialties, Contests, Centennial QSO Party, W1AW, Logbook of the World, Amateur Code
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
Join ARRL/Renew Membership, Member Directory, myARRL, Membership Certificate, Membership Levels, Member Support, Member Discounts
Federal, State and Local, Technical Relations Office, Volunteer Consulting Engineer Program, Volunteer Counsel Program, Antenna Regulation and Zoning, CCR Study Information, International, Federal RFI Preemption
Public Service Honor Roll, Ham Aid, Public Service Resources, ARES, Served Agencies and Partners, NTS
ARRL References, ARRL Lab, Radio Technology Topics, Radio Frequency Interference (RFI), Tech Portal
Volunteer Opportunities, Youth, Hamfests and Conventions Calendar, Donate to ARRL, Recruiting & Outreach, The ARRL Foundation, Clubs
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