1:49 unun for end fed half wave antennas
Antennas/End-Fed/End Fed Half Wave Antenna
1:49 UNUN using two stacked FT240-43 cores for end fed halfwave antenna. To match the end fed half wave antenna to the coaxial feeder, it is necessary to have a matching network or transmission line transformer.
5V7RU Log Online
DX Resources/Logs
5V7RU DX Pedition to Togo online log search provided by clublog
Kenwood TS-590 Driver
Radio Equipment/HF Transceivers/Kenwood TS-590S
Download the Kenwood TS-590S and TS-590SG virtual port Driver for Windows 10/11 and Windows 8. This driver is also valid to control TS-990S, TS-890
Understanding computer-generated RFI
Technical Reference/Radio Frequency Interference
Radio Frequency Interference (RFI) has always been a source of concern for the Radio Amateur. Until the recent introduction of complex circuitry in the home, our communications gear has been the main source of potential RFI. In this computerized age of ours, increasingly complex and sensitive receivers are being barraged by these and other sources of RFI.
Top Amateur Radio Websites - Issue 2236
Amateur Radio License Map, 80m Vertical, RF Exposure Calculator, Demonstrating AM sidebands, Retevis RT3 Tytera MD-380 Modifications, Automated Voice announcements over RF , ARRL Exam Review for Ham Radio,
W5OBM Olive Branch Amateur Radio Club
SWR analysis of a G5RV antenna
Antennas/G5RV
G5RV SWR Analysis of a Radiowavz 10m-80m full length antenna made using a RigExpert AA54 antenna analyzer.
ARRL Audio News October 28, 2022
Student Radio Contact with the International Space Station Inspires Hurricane-hit Community
Students from Canterbury School in Fort Myers, Florida, were able to spend a few minutes on Monday, October 24, 2022, talking with Astronaut Josh Cassada, KI5CRH, onboard the International Space Station (ISS) using ham radio.
The radio contact, arranged by the Amateur Radio on the International Space Station (ARISS) program, provided hope for a community devastated by Hurricane Ian. School offic...
New Wyoming Section Manager Appointed
Garth Crowe, WY7GC, was appointed as the new ARRL Wyoming Section Manager on October 12, 2022. He replaced Rick Breininger, N1TEK, who announced he was stepping down following the Rocky Mountain Division Convention held in early October. Breininger served as the Wyoming Section Manager since April 2019.
ARRL Field Services Manager Mike Walters, W8ZY, officially appointed Crowe after consultation...
Activity and Awards Increase at 222 and 1296 MHz
Interest in ARRL VHF and above Worked All States Awards (WAS) continues its flurry of activity, now on the 1296 MHz band.
As we reported in ARRL News in January, there have been several new-generation additions to the Worked All States Awards, now at 222 MHz (1.25 Meters) and at 1296 MHz (23 cm).
The original rush to 1.25 Meters WAS began in the early '80s with the first 10 WAS Awards. More recen...
Registration is now open for Nashua Area Radio Society's Fall 2022 Ham Bootcamp
The online event is scheduled for Saturday, November 5, 2022, from 10:00 AM - 6:00 PM EDT. There is no charge to attend the Ham Bootcamp which entails a variety of informative presentations and activities related to amateur radio, and is geared toward new operators of any license class that wish to learn more about getting on the air. Additionally, Ham Bootcamp allows those thinking of becoming...
Measuring HF Balun Performance
Antennas/Baluns
If you thought you knew everything about balun performance characteristics, there is an important figure of merit you may have neglected
FCC Seeks Electronic Engineers for Honors Program
The Federal Communications Commission (FCC) announced this week that it is opening a new window for applications under its Honors Engineer Program. The one-year developmental program may lead to a term or permanent appointment. The Commission is accepting applications from recent graduates with an engineering degree and current students graduating in December 2022.
Among the duties included in ...
Understanding Antenna Gain in a Few Minutes
Antennas/Theory/Antenna Gain
A collection of videos on antenna gain and explanations of how some antenna designs may perform better than others based on how their radiation pattern is drawn.
Understanding how one antenna can gain more in reception and transmission than another can be complicated, but with these videos the author has without any doubt made it easier.
Patrick Brannick, N2BZD, Wins the September 2022 QST Cover Plaque Award
P29RO Log Online
DX Resources/Logs
P29RO online log of Papua New Guinea DX Pedition 2022 powered by club log
History of the Radio
Operating Aids/History
The history of the radio is a fascinating one that changed how the world connected and communicated from distances both far and near. History of the Radio from Inception to Modern Day
Amateur Radio Club Members Assist Law Enforcement
The Wayne Amateur Radio Club (WARC) manned a 30-foot-tall mobile observational Infrastructure Protection Unit, or SkyWatch tower, at Ohio's Wayne County Fair in September again this year.
Staffed by specially trained amateur radio volunteers, the tower provided 24-hour surveillance, monitoring, and a record of activity on the fairgrounds, including medical emergencies, lost children, and other s...
Icom External Keypad Connector Cable
Technical Reference/Mic wiring
To connect the external keypad to your Icom radio you’ll need to make a connector cable like this.
ARRL Foundation Accepting Applications for Grants and 2023 Scholarships
The ARRL Foundation is now accepting applications for grants to amateur radio organizations and for its 2023 Scholarship Program.
The grants program awards limited funding to organizations for eligible amateur radio related projects and initiatives, particularly those with a focus on educating, licensing, and supporting amateur radio activities. Youth-based projects and initiatives are especiall...
Amateur Radio Operators Invited to Participate in Scientific Experiments
The High-frequency Active Auroral Research Program (HAARP) will be conducting their largest experiment and research campaign from October 19 - 28, 2022. Amateur radio operators are invited to listen and participate. The research will last for 10 days and include 13 experiments, with transmissions taking place between 1400 - 0600 UTC daily. The transmission experiments include moon bounce, Jupite...
Central States VHF Society Celebrates 54 Years
The Central States VHF Society (CSVHFS), the oldest group in the country devoted to weak signal VHF, held their 54th annual conference on July 21 - 23, 2022. Over 130 amateurs attended the event, which was held in La Crosse, Wisconsin. This year's conference highlighted the recent activity with 222 MHz Worked All States (WAS), as well as the Fred Fish Memorial Award (FFMA), the VHF Spring Sprint...
Amateurfunk Club Deutschland
Amateur radio club from Germany
Kenwood TS2000 vs TS590S
Radio Equipment/HF Transceivers/Kenwood TS-2000
Comparing the Kenwood TS-2000 vs TS-590S from an operational point of view. Pro and cons of both transceivers has been compared by the author.
JUNIOR-2 ARDF receiver
Technical Reference/Radio Direction Finding
The JUNIOR-2 presented here is a competition direction finder receiver that is easy to build and tune, but has all the features of the "big" receivers. It is especially suitable for beginners, young people or youth groups who have so far refrained from purchasing a 2m direction finder receiver for financial reasons.
Top Amateur Radio Websites - Issue 2235
The Pop-Up Vertical 2.0, Handheld SSB transceiver for 20m, CAT Interface for Yaesu FT-817 and FT-100, Homebrew an OCF Off-Center Fed Dipole Antenna, Field Day Inverted L, Miniature CI-V for Icom Radios, A Mobile Antenna Mount for T-Hunting,
S59ABC S52000 Radio club Maribor
Home page of radio club Maribor Slovenia:S59ABC,S52000 milenum callsing.
Fundamentals of Radio Waves Propagation
Propagation/Beginner's Guide
How radio signal get propagated throught the atmosphere, the role of the ionosphere, the thropospheric ducting, single hop and multi hop propagation, the sporadic E propagation
ARRL Audio News October 21, 2022
Do not wind chokes on red toroids!
Antennas/Feed Lines/Choke
I happened to stumble across some antenna projects showing common mode chokes 1:1 baluns made of some turns of coax wound on T200-2 iron powder toroids.
ICRCweb - Insurance City Repeater Club
The Insurance city repeater club operates out of central connecticut and works closes with the american red cross
How does an antenna tuner work ?
Antennas/Tuners
Collection of several topics on antenna tuners and their performance. Why use an antenna tuner?
How does an antenna tuner…tune
Does an antenna tuner fool the radio?
Will an antenna tuner waste power?
Can an antenna tuner help get more power to the antenna?
Ham Radio Auction Supports ARRL Programs
ARRL The National Association for Amateur Radio® invites its members and all amateur radio operators to get ready for the 17th Annual ARRL Online Auction. Bidding gets under way on Friday, October 21, 2022, at 10:00 AM EDT. The auction continues through Thursday, October 27. RT Systems, Inc. is sponsoring this year’s ARRL Online Auction, which benefits ARRL education and technology initiatives...
Wavecom W-CODE
Software/Decoders
W-CODE is a professional digital mode decoder system capable to decode many digital signals on HF, VHF/UHF, SHF and SATELLITE bands.
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