The CW Typewriter: A Morse Code to ASCII Converter
Technical Reference/Morse Code Decoder
The CW typewriter is a compact adapter board that transforms Morse code into ASCII characters using an Iambic key. It connects to a computer via USB, emulating the keyboard. The device features inputs for Iambic keying and a WPM speed potentiometer, and outputs for a key and a speaker for side tone. The device can be used with various software and online typing games for practice, offering a unique and interactive way to learn and use Morse code.
Antenna Manufacturing: How to Prevent Galvanic Corrosion
Antennas/Homebrewing Techniques
Galvanic corrosion, a destructive process triggered by dissimilar metal contact in a corrosive electrolyte, poses a significant threat in antenna manufacturing. With aluminum and stainless steel components commonly involved, unaddressed corrosion can lead to white particle accumulation, causing long-term damage. Awareness of the galvanic series and the application of protective coatings like Alumslip can mitigate this pervasive issue, ensuring a prolonged antenna lifespan.
Top Amateur Radio Websites - Issue 2340
End Fed Antenna for WARC Bands, Open-Folded W8JK Antenna for HF, 8010 Enfed Antenna, Repeaters a guide for Beginners, Yaesu FT-710 Brochure, Yaesu FT-818 Details, 23cm Yagi antenna,
Gulf Coast Amateur Radio Club
Located in Port Richey, Florida in Pasco County, West Central Florida just Northwest of Tampa.
Unearthing VHF Contest Secrets: An In-Depth Analysis
DX Resources/Contest/Contest Results
In this article, authors delve into the inner workings of the IARU R1 VHF contest, the world's largest 2m contest. While activity levels are declining, the top performers consistently maintain their results. Authors explore the physical constraints of achieving higher point totals and speculate on various factors like improved technical capabilities, increased interference, and evolving station setups. It is a fascinating journey into the contest's dynamics, leaving room for intriguing speculations about its future.
ARRL Audio News November 10, 2023
ARRL Audio News November 10, 2023
Enhancing Performance with W8JK/MOXON Antenna Variant
Antennas/Moxon
F5NPV introduces a variant of the W8JK antenna design, employing the MOXON principle. With extended monopoles, it outperforms the Open-Folded W8JK, yielding a 1dbd gain improvement, enhanced performance on 30m and 10m bands, bi-directionality, and lower side attenuation. The design's focus on higher radiation impedance results in increased antenna efficiency and reduced losses. Despite these improvements, the bill of materials remains unchanged.
Changes in the ARRL Pacific Section
Section Manager of the ARRL Pacific Section Joe Speroni, AH0A, has retired from the position. Speroni served in the role for 7 years. He was active with ARRL in a variety of positions dating back to the creation of the Volunteer Examiner program in 1984. He has also been an instructor and Affiliated Club Coordinator (ACC). His contributions to emergency communications and management in the Hawa...
The First Worked All States Certificate Awarded for the 33-Centimeter Band
On November 4, 2023, Al Ward's, W5LUA, 38-year quest to contact all 50 states on the 33-centimeter band ended when he received the first-ever Worked All States (WAS) certificate for (902 - 928 MHz). Ward started collecting states on the band shortly after it was opened in 1985. "I am extremely grateful to Peter Van Horne, KA6U, for his EME [Earth-moon-Earth] efforts. I was able to work Wisconsin...
70Mhz (4 metre) Delta Loop Antenna
Antennas/Delta loop
Discover the success story of creating a 4-meter Delta Loop antenna, ideal for improving radio communication. This horizontally polarized antenna offers efficient performance when mounted at VHF heights, catering to both HF and VHF characteristics. A simple, DIY project suitable for portable setups, providing versatile options for radio enthusiasts.
ARRL Closed Friday, Nov 10, 2023 in Observance of Veteran's Day
ARRL The National Association for Amateur Radio® will be closed on Friday, November 10, 2023 in observance of Veterans Day. There will be no W1AW bulletins or code practice that day. ARRL Headquarters will reopen on Monday, November 13, 2023 at 8:00 am Eastern time.
We are grateful for the sacrifices and service of Veterans.
40 MHz 8m Band Amateur Radio Exploration
Operating Modes/VHF UHF
The 8m ISM band, a unique frequency range between 10m and 6m, holds potential for amateur radio enthusiasts, yet it remains largely unallocated. This spectrum offers fertile ground for research and self-training. The author's experience with low-power transmissions and WSPR testing highlights the band's capabilities and the need for a narrow, speech-free amateur allocation to encourage experimentation. Discover the world of 8m ISM radio exploration and its future possibilities.
Yaesu VR-120 Memory Manager
Software/Radio Programming
TK120 is an experimental memory management software for Yaesu VR-120 transceiver
QRP Balun: A DIY Project
Antennas/Baluns
DIY project of a QRP Balun. Using a high permeability ferrite rod and an old B&W dipole center insulator, he constructs a choke type balun for QRP use. The balun aims to create as much inductance as possible at HF, offering a high impedance to common mode currents
40m QRO End Fed Half Wave Antenna Coupler
Antennas/End-Fed/End Fed Half Wave Antenna
A medium power End Fed Half Wave Antenna coupler, specifically tuned to the QRP frequency of 7030 kHz. Constructed from coil stock and capacitors, it achieves an impedance ratio of 64:1. The coupler has proven effective for power ranges from 2 to 100 Watts on the 40m band.
Top Amateur Radio Websites - Issue 2339
Multiband portable wire antennas, 27MHz CB to 50 MHz Amateur Use Conversion, ICOM IC-7610 Rewind , 6m Oblong Loop Antenna, Programming FT-991A, Operating Amateur Radio Overseas, 6m Beacons Report,
W9VMW Cass County Amateur Radio Club
The Cass County Amateur Radio Club is a Non-Profit Organization serving Logansport, Indiana 46947. The CCARC participates in ARES Nets, Skywarn Nets and Field Day and has 2m repeaters at 147.18 MHz, 145.23 MHz, and 145.35 MHz and a 70cm repeater at 443.65 MHz.
DIY 1KW Dummy Load
Technical Reference/Dummy Loads
F5NPV explores the construction of a cost-effective 1KW dummy load for radio enthusiasts. Purchasing a commercial dummy load can be expensive, but with basic materials such as a metal can, resistors, mineral oil, and a heat dissipator, you can build your own. The article provides a simple guide to assembling the load, including the importance of testing for inductance. The DIY dummy load yields impressive performance, with an SWR of 1.2:1 across multiple bands and the ability to handle up to 1KW of power. This budget-friendly solution is a valuable addition to any radio shack.
TEFV Terminated End Fed Vee Antenna
Antennas/End-Fed
The Terminated End Fed Vee Antenna (TEFV) is a travelling wave antenna with constant current distribution. Unlike traditional resonant antennas, TEFV operates without standing waves, using a terminating resistor for broadband efficiency. With a combination of vertical and horizontal polarization, it offers wide bandwidth from 1.8 MHz to 30 MHz, eliminating the need for a tuner. Key components include a 9:1 unun transformer and a 500-ohm terminating resistor. Grounding and counterpoise enhance performance, and it can handle power losses of up to 30%. TEFV provides an effective, versatile antenna solution for amateur radio and broadcast applications.
Skywave Linux
Software/Linux/Linux Distributions
Linux for shortwave and amateur radio monitoring. Supports popular SDR hardware and online streaming from KiwiSDR, WebSDR, and Spyserver sites. Articles about using Linux with your SDR devices.Skywave Linux, an innovative operating system, leverages cutting-edge technology for seamless access to radio signals globally. Ideal for regions with limited internet access, it effortlessly connects to a network of SDR servers, offering high-performance SDR operation without the need for extensive hardware. With pre-installed and configured SDR software, Skywave Linux simplifies signal discovery and operation for all users.
Arduino Iambic Keyer
Technical Reference/Arduino/Morse Code
The author recounts their journey in ham radio, including the initial experience with Morse code. Now retired, he has rekindled his interest in ham radio and CW. Here share his project of constructing an Iambic Keyer with Arduino. The project includes a memory keyer and speed adjustment. Additionally, the author provides resources for an Arduino enclosure available on Thingiverse, enhancing the project aesthetics and functionality.
Analyzing SSB Signal Quality in CQ WW Contest
DX Resources/Contest/Resources
This article investigates SSB signal quality during the CQ WW 2015 SSB contest. It highlights the importance of adhering to the ideal SSB signal profile, the impacts of intermodulation distortion, and the consequences of poor-quality signals. The analysis underscores the need for well-tuned equipment to ensure cleaner, more efficient signals and, consequently, a more enjoyable and spacious experience for contest participants and amateur radio operators.
ARRL Audio News November 3, 2023
ARRL Audio News November 3, 2023
Amateur Radio Operators Provide Post-Hurricane Communications in Mexico
Radio Amateurs are providing communication services to and from the affected areas in and around Acapulco, Mexico. On the morning of Wednesday, October 25, 165 mile-per-hour winds from Hurricane Otis knocked out all communications and unleashed a nightmare scenario in Acapulco. The area is home to roughly 800,000 people. Radio Club Queretaro member Ruben Navarrete Galvan, XE1EC, told ARRL News...
Great California ShakeOut Drill Reported a Success
Editor's Note: Tuolumne County Amateur Radio and Electronics Society (TCARES) members Rich Combs, KN6HSR; Ned Sudduth, K6NED, and Toni Sudduth, K6TNI reported that the October 2023 Great California ShakeOut exercise was an "outstanding" success. Here is their story as reported to ARRL News: "This is a drill. Drop! Cover! Hold on!" was the mantra for the Great ShakeOut exercise on October 19, 2023...
Veterans Day 2023 Special Events
Special event stations will offer many opportunities for amateur radio operators to honor Veterans and make contacts for Veterans Day. The K1USN Radio Club will be on the air on Saturday, November 11, 2023, to show their appreciation for those who have served in the military. The club station is located at 85 Quincy Avenue in Braintree, Massachusetts. K1USN will be on the HF bands on SSB, CW, an...
Choosing the Right Aluminum Stock for Antenna Building
Antennas/Homebrewing Techniques
Building an efficient antenna begins with selecting the right aluminum stock. This article provides a comprehensive guide to sourcing aluminum materials for antenna construction. It covers different aluminum grades, their tensile strengths, tempering options, and their suitability for various antenna components. The article also recommends reputable suppliers in the UK, making it a valuable resource for antenna builders seeking durable and high-performance materials.
Deadline Extended to November 28, 2023 for 60-Meter Comments
The deadline to file comments on the 60-meter band proposal has been extended by the Federal Communications Commission (FCC) to November 28, 2023. Replies to comments will be due December 28, 2023. The public comment period was originally to close October 30, 2023. ARRL The National Association for Amateur Radio® strongly encourages all amateurs to submit comments expressing support to the FCC ...
SNASharp
Software/Vector Network Analyzer
SNASharp is a free software application designed to work with scalar network analyzers compatible with NWT software from DL4JAL. It is used to measure and analyze the scattering parameters (S-parameters) of microwave devices. Provide several measurements and analysis tools including Smith chart, Polar plot, S-parameter tables, Transmission line calculator
Top Amateur Radio Websites - Issue 2338
WIFI Remote FUCHS ATU for EndFed Antenna, Yaesu FTdx101D Review, DuinoVox USB interface, HB9CV Antenna for 23 cm, A 6m beam for portable operations, FT-818ND Operating Manual, NZ Amateur Beacons,
USB-C charging for Handheld Radio Transceivers
Technical Reference/Batteries
The article highlights the common absence of modern USB-C ports on handheld ham radios and the limited use of USB for power. The author, [jephthai], shares a solution involving a USB-C cable with power negotiation capabilities, allowing the radio to be powered by USB. By splicing Anderson power pole connectors onto the cable, the radio can now be conveniently powered by a USB battery bank, providing a practical alternative to traditional 12 V batteries for off-grid operations.
EFHW Anntenna 40-10 for QRP
Antennas/End-Fed/End Fed Half Wave Antenna
The author discusses their endeavour to create a compact, robust resonant antenna for QRP operations due to strong winds in their area. Primarily designed for 40m and 20m bands, the article offers adaptability for different bands. The author hints at future projects, including an extended 8010 EFHW variant, promising a lighter yet efficient design.
ARRL Audio News October 27, 2023
ARR Audio News October 27, 2023
FCC To Vote on Removing Symbol Rate Restrictions
ARRL The National Association for Amateur Radio® welcomes news of a scheduled vote by the Federal Communications Commission (FCC) to consider removing symbol rate restrictions that restrict digital modes, foster inefficient spectrum use, and dampen incentives for innovation. In the draft Commission decision, the FCC would replace the current HF restrictions with a 2.8 kHz bandwidth limit. The ...
How to Engage Youth with Amateur Radio STEM Education
ARRL Education and Learning Manager, and IARU Region 2 Youth Coordinator, Steve Goodgame, K5ATA, gave the keynote address at the 2023 ARRL Pacific Division Ham Radio Convention, also known as Pacificon. Goodgame was a public-school teacher for 21 years. He carries his experience of bringing ham radio into the classroom into his role at ARRL. "It is safe to say I've learned a thing or two about r...
|
