-
ROM for the 23rd Edition of The ARRL Antenna Book
Also located on the CD-ROM in the \Propagation subdirectory is the Table4-3.pdf file described in the Radio Wave Propagation chapter of the printed book. This ... Learn More
-
1000Z - RIGOL Technologies
The 1000Z Series is RIGOL's Digital Oscilloscope platform for Basic Visualization. It offers unprecedented value in customer applications. Learn More
-
Tech Portal - ARRL
Welcome to the ARRL's portal for Amateur Radio technology! This page provides links to some of the technical facets of Amateur or "Ham" Radio. Learn More
-
MFSK Spec - ARRL
The American Radio Relay League (ARRL) is the national association for amateur radio, connecting hams around the U.S. with news, information and resources. Learn More
-
Surfin': When One Thing (Music) Leads to Another (Radio) - ARRL
Tom Zicarelli, KA1IS, wrote to me about his music project that ended up being a ham radio project using ham software defined radio (SDR) project using Max/MSP. Learn More
-
LoTW Help Ticket - ARRL
The American Radio Relay League (ARRL) is the national association for amateur radio, connecting hams around the U.S. with news, information and resources. Learn More
-
Xiegu G106 SDR HF Transceiver | 5W QRP Radio | SSB CW AM WFM
Disclaimer: No License is required to purchase this radio, nor to Monitor (listen) to the many Amateur (Ham) Radio frequencies. However, an FCC License is ... Learn More
-
Developer - ARRL
The American Radio Relay League (ARRL) is the national association for amateur radio, connecting hams around the U.S. with news, information and resources. Learn More
-
What is Logbook of The World? - ARRL
Logbook of The World is FREE to all radio amateurs around the world. Membership in ARRL is not required to use. LoTW. *. Users may upload logs and view data ... Learn More
-
QEX - ARRL
Dec 1, 2008 ... TMATCH.ZIP. 12/1997. Understanding the T-Tuner (C-L-C) Transmatch) ; VDHL.ZIP. 12/1997. Modern Digital Design for the Radio Amateur ; CLVRSTAT.ZIP. Learn More
NEW TO ARRL
LEARN MORE ABOUT
MEMBER QUICK LINKS
LICENSING LINKS
IN THE ARRL STORE
Copyright © 2026 The American Radio Relay League, Inc. All rights reserved. Reproduction of material from any ARRL web page without written permission is strictly prohibited.