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An introductory guide to SDR and DSP technologies. Discover why your next radio will be SDR!
Special Member Price! Only $19.95 (regular $22.95)
A step-by-step guide that will get you started in the fascinating world of HF digital technology!
Special Member Price! Only $22.95 (regular $25.95)
Your complete guide to the most widely-used VoIP systems used by hams: EchoLink ,IRLP, eQSO and WIRES-II.
A guide on the two most popular data modes used today, RTTY and PSK31. Expanded and fully updated!
The first comprehensive reference to the world of D-STAR operation. Experience the excitement!
A complete guide for implementing PSK31. Get PSK31 up and running quickly and easily!
Practical lessons and approaches in radio receiver design for wireless communication systems.
Gain a working knowledge of DSP applications, including communications and process control.
Special Event Stations, DXCC Program, Operating Resources, QSL Service, Operating Specialties, Logbook of the World, Amateur Code, W1AW, Centennial QSO Party, International Operating, Contests, Awards
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
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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, Donate to ARRL, 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