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The complete guide to prefix identification and information. Fully Updated!
One of the most comprehensive guides to the theory and practice of Amateur Radio communication.
A guide on the two most popular data modes used today, RTTY and PSK31. Expanded and fully updated!
Explore the excitement of the "magic band" with this complete guide to 6 meters. Includes the 4 meter band.
Practical solutions for hams unable to put up large antenna towers and get on the air!
The latest wire antenna designs and developments from around the world. A must-have for wire enthusiasts!
A guide to the mysteries of electromagnetic waves, transmission Lines and VSWR.
Learn how to measure the performance of your station. Youíll find itís easy to make useful test equipment yourself.
Learn the principles and practice behind every part of the valve radio. Essential for anyone wanting to understand the technology.
THE guide to theory and practice in the VHF and UHF bands
Special Event Stations, DXCC Program, Operating Resources, Awards, International Operating, QSL Service, Operating Specialties, Contests, Amateur Code, Centennial QSO Party, W1AW, 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), 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