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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.
Your Gateway to worldwide DXing, both at home and on your travels!
Be prepared for any emergency with this powerful LED flashlight. Charge with the solar panel, hand crank, or AC/DC input.
More than 40,000 entries cover all broadcast and utility stations on shortwave. Hundreds of fascinating new digital data decoder screenshots!
Special Event Stations, DXCC Program, Operating Resources, Awards, International Operating, QSL Service, Operating Specialties, Contests, W1AW, Amateur Code, Centennial QSO Party, Logbook of the World
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)
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, Shipping, Product Notes, Customer Service/Support
ARRL, the national association for Amateur Radio
225 Main Street
Newington, CT, 06111-1494 USA