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Discover all the amazing things you can do with Arduino!
The quick, easy way to leap into the fascinating world of physical computing!
Easy to build microcontroller weekend projects—for use in the shack, in the field, and on the air!
Special Member Price! Only $29.95 (regular $34.95)
This 50 page waterproof Amateur Radio log book is portable, packable, tough and it floats.
Show your support for Amateur Radio and the NTS with these supply items!
Pins, patches, mugs and stickers are available. Click details to order.
Over 40,000 entries cover all broadcast and utility stations on shortwave. Hundreds of new digital data decoder screenshots!
A guide to success on the bands below 1MHz.
Learn how to get started in Morse code, increase your speed and more. CD-ROM included!
Explore the excitement of the "magic band" with this complete guide to 6 meters. Includes the 4 meter band.
A guide on the two most popular data modes used today, RTTY and PSK31. Expanded and fully updated!
Special Event Stations, DXCC Program, Operating Resources, Awards, International Operating, QSL Service, Operating Specialties, Contests, W1AW, Amateur Code, Centennial QSO Party
FCC License Info and Forms, Volunteer Instructors/Mentors, Courses & Training, Getting Licensed, Volunteer Examiners, What is Ham Radio, Get on the Air, Amateur Radio in the Classroom, College Students and Educators
Join ARRL/Renew Membership, Member Directory, myARRL, Membership Certificate, Membership Levels, Member Discounts, Member Support
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, ARES, Ham Aid, NTS, Public Service Resources, Served Agencies and Partners
ARRL References, ARRL Lab, Radio Technology Topics, Radio Frequency Interference (RFI)
Donate to ARRL, Volunteer Opportunities, Recruiting & Outreach, The ARRL Foundation, Youth, Hamfests and Conventions Calendar, Clubs
ARRL Publication Dealers, ARRL Store, List all Products, Periodicals, Shipping, Customer Service/Support, Product Notes
ARRL, the national association for Amateur Radio
225 Main Street
Newington, CT, 06111-1494 USA