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New Alfa Alfa Worldwide Radio DX Group Are Welcome, Also old Alfa Alfa members. Only Active Operators and SWL ShortWaveListers PostStation. You Make the Difference Whether You Are a CB Operator. Or just a Listener without a transmitter. And actively participates in the Alfa Alfa Worldwide Radio Dx Group. This keeps the Group Active and makes a difference compared to other sleeping club / group members. They are called spirit callings that are never heard or received by SWL qsl. You as Alfa Alfa Makes a difference and a group alive. Alfa Alfa Worldwide Radio Dx Group is looking for real, very active CB radio operators, and SWL ShortwaveListing Post Stations

This page provides information on how to design an Off-Center-Fed Dipole (OCFD) antenna, suitable for amateur HF bands like 80 meters or 40 meters. The antenna design allows for VSWR minima on multiple bands, making it a good choice for multi-band use. Learn how to create an OCFD antenna in either flat-top or inverted-Vee form using a single support. The page also offers tools to generate radiation patterns, VSWR charts, and antenna current diagrams for your specific antenna design, helping hams understand performance factors. Ideal for ham radio operators looking to build their own effective antennas.

This report details a modification of a Diamond V2000 antenna, replacing its original two 0.50 m radials with two 1.55 m radials. Initial M5-threaded rods failed to fit; the housing required M6 threads. Custom radials were made using 8 mm OD aluminium tubing and M6-threaded stainless steel ends, secured with nuts machined to 9 mm. SWR issues on 6 m (>2:1) were largely due to a poor counterpoise connection, resolved during reassembly. NanoVNA measurements showed no adverse effects on 2 m or 70 cm. The final setup retains the two 1.55 m radials and original counterpoise. Other operators reported SWR degradation with similar mods—sometimes fixed by adding capacitance—but this was not observed here.

This blog post by VE3VN discusses the design and performance of a 40-meter reversible Moxon antenna. The antenna provides coverage between southeast to west by default, with the ability to reverse for coverage from east to northwest. The post explains how the antenna performs well in various directions, focusing on the Caribbean, South/Central America, the US, and Europe. Detailed measurements and design considerations are shared, highlighting the accuracy of the model and the critical importance of coil inductance. The post also mentions the use of NEC5 for accurate modeling. Overall, this detailed discussion provides valuable insights for ham radio operators looking to optimize their antenna setup.

This page discusses the potential risks and safety concerns related to antenna installations for ham radio operators. It emphasizes the importance of following electrical codes and regulations to prevent property damage, injuries, or even loss of life. The author shares personal experiences and advises against using trees for antenna support near power lines. The content serves as a cautionary resource for hams planning antenna setups to ensure safety and compliance with regulations.

Explore a variety of ATV projects and resources for ham radio operators on ATV-Projects.com. Find helpful guides, tutorials, and tips to enhance your amateur radio experience. From antenna construction to equipment reviews, this site offers valuable information for hams looking to expand their knowledge and skills. Whether you're a beginner or seasoned operator, ATV Projects has something to offer for all levels of expertise.

Learn how to easily convert between different units like dBu, dBm, W, mW, V, and uV with the dBCalc application. This small windows program allows ham radio operators to quickly check conversions using input and output resistance. It's a useful tool for anyone dealing with electronic measurements and calculations. Best of all, dBCalc is free to use, making it a convenient solution for amateur radio enthusiasts. This tool simplifies complex conversions and helps hams optimize their equipment setup.

Learn how to optimize your keyboard setup for CW contesting in amateur radio. Discover the importance of macros, keyboard combinations, and single keys for efficient contesting. Find out how a mechanical key system like the Lenovo full-sized preferred pro 2 keyboard can enhance your contesting experience. Explore tips on avoiding accidental key presses and maximizing your speed during contests. Dive into macro setup details, including key functions like STOP, CQ, and X. Improve your contesting skills and efficiency with the right keyboard setup tailored for CW operators.

This page provides a detailed guide on the J-pole antenna, an end-fed half-wave antenna matched to the feedline by a quarter-wave transmission line stub. It covers the characteristics, construction materials, feeding options, and mounting considerations for optimal performance. The information is useful for hams or amateur radio operators looking to build and set up a J-pole antenna for improved transmission and reception.

This page offers an online tool to calculate the dimensions for a quarter wave antenna based on a specified frequency. It helps hams design antennas for optimal reception and transmission properties, using 1/4 wavelength elements. The calculator ensures a matching impedance of 50 Ohm without the need for additional components. The page is useful for amateur radio operators looking to build efficient antennas for their radio communication setup.

This page provides a detailed step-by-step guide on how to set up WSJT-X for FT8 operation with a Yaesu FT-747GX transceiver. The author shares their personal experience of transitioning from Windows 10 to Linux Mint Cinnamon 22.1 for a smoother operation. Hams looking to optimize their FT8 experience with this specific transceiver model will find useful tips and insights on software installation and configuration. The content is user-friendly and aims to assist radio operators in efficiently setting up their equipment for digital mode communication.

This paper presents an 80 meter wire 3-element beam antenna in an inverted-V configuration, designed for limited-height towers. Using EZNEC modeling, the antenna features a central parasitic reflector and two switchable driven elements at each end, enabling NE/SW coverage without moving parts or networks. Element lengths are optimized for SSB (3.8 MHz) and CW (3.5 MHz) operation, with a 50 Ω feed and rope-supported boom. The design delivers high gain, effective takeoff angles, and excellent reception, confirmed in real-world DX contest operation. Its simplicity, reliability, and ease of construction make it ideal for operators seeking performance without complex matching systems.

Learn how to build a VFO controller based on the Si5351 for ham radio operators. This controller consists of a PIC16F1825 and OLED SSD1306 display, with clock outputs for Tx, Rx, and IF frequencies. Features include calibration, RIT function, and the ability to tune frequencies separately. With step-by-step instructions and schematics, you can easily create your own VFO controller for your amateur radio setup.

Tar Heel Designs offers a range of quality products for ham radio operators, proudly made in America. Watch a raw, unedited product video from the 2025 Orlando Hamfest. For more information or to shop online, visit their website powered by eDirectHost, an info & ecommerce website builder. Find everything you need for your ham radio hobby in one convenient location.

HamRadioSchool.com combines traditional textbook learning with modern online tools. Their approach focuses on building conceptual understanding rather than just memorizing answers. The site offers structured courses with clear learning paths, video tutorials, and interactive quizzes. Their materials are particularly strong on electronics theory fundamentals. The site also maintains an active blog with tips for new operators and explanations of confusing exam topics.

This page contains detailed notes on repairing and aligning the Kenwood TS-440S HF radio. The author shares their experience repairing several TS-440S radios, highlighting common issues and repair techniques. The page also discusses parts availability, modifications, and the radio's performance for digital modes like FT8 and JT65. Aimed at ham radio operators interested in repairing and maintaining vintage HF radios, this page provides valuable insights and tips for working on the Kenwood TS-440S.

The CKARC, a group of dedicated Amateur Radio Operators, located in Salina Kansas has been in operation for over 72 years. We have been affiliated with the American Radio League (ARRL) since June 3, 1949.

INTERCOM is a freeware application designed for remote control of KENWOOD TMD700/710/V-71 transceivers, as well as other transceivers equipped with UP, DOWN, and PTT commands. Compatible with Windows XP and higher (32 & 64-bit), INTERCOM offers multilingual support in English and French, and can be used on Linux, Ubuntu, or Android platforms via WINE 1.0 or CROSSOVER. The software enables users to send basic commands—such as selecting TX, VFO, memory channels, or power levels—either through manual inputs or over a TCP/IP link. INTERCOM is tailored for SIMPLEX setups, facilitating the interconnection of VHF/UHF repeaters with nearby repeaters. Remote commands are transmitted using DTMF codes, which are decoded by SIMPLEX and forwarded to INTERCOM via TCP/IP. This functionality makes INTERCOM an ideal tool for radio enthusiasts and operators seeking seamless remote management of supported transceivers in simplex configurations.

This page provides a calculator to determine the total line loss and additional line loss in your transmission line based on the level of SWR. It helps hams understand the impact of high SWR on transmission line losses. The calculator allows users to input their SWR level and get accurate calculations of total losses. This tool is useful for ham radio operators looking to optimize their transmission setups and improve overall efficiency.

This project focuses on the transformation of DXSpider deployment into a seamless Docker experience for the global amateur radio community. It highlights the key features, installation process, and documentation, while acknowledging Dirk Koopman (G1TLH) for creating DXSpider. The project aims to simplify the deployment and management of DX Cluster nodes for amateur radio operators by containerizing the software. With a Docker-native architecture and intelligent defaults, the project offers an easier setup process without compromising on the powerful features of DXSpider.

Join Kirk Pickering, K4RO, as he delves into the importance of calling CQ in amateur radio contesting. Learn about the debate over spotting assistance and why developing tuning and identifying skills is crucial for contest operators, especially newcomers. Discover valuable insights on how to enhance your contesting experience and maximize your success.

The Parks on the Air website is dedicated to international portable amateur radio operations from national/federal and state/provincial parks. It provides rules, guides, and resources for ham radio operators looking to participate in emergency awareness and communications. The site also offers a book exploring the process of park activations and hunting for those activations, with advice and motivation from experienced operators. Visitors can make contributions to support the site's overhead costs and keep it ad-free. The site is a valuable resource for hams interested in getting active in the growing POTA community.

Terrestrial Amateur Radio Packet Network An ever expanding group of Amateur Radio operators are working together to use many VHF/UHF radios to link multiple ham radio stations in a digital network for the purpose of having fun in a fun, educational, hobbyist-controlled environment, built using ham radio infrastructure based on packet radio technology.

H44WA Solomon Islands November 15-29, 2023. A team of Western Washington DX Club amateur radio operators will activate Solomon Islands in November 2023.

This page provides tips and advice for ham radio operators interested in activating park sites for the Parks On The Air (POTA) program. The author shares insights on how to find accessible parks in Western PA and beyond, emphasizing the importance of starting with historic sites and national parks. The content offers guidance on setting up equipment and getting on the air for POTA activations, making it a useful resource for beginners and experienced POTA operators looking to expand their park options.

This page provides information about the upcoming DXpedition to Manihiki in the North Cook Islands by a team of Western Washington DX Club hams. It includes details about the dates of the operation, financial support options, QSL policy, and how hams can get involved. The page is aimed at ham radio operators interested in working the E51MWA station during the DXpedition and supporting the team financially.

This page presents the K4 S-Meter Recorder, a tool designed for the Elecraft K4 radio by hams. The tool collects S-Meter readings and saves them to a CSV file, allowing users to create graphs of RFI over time. These graphs are valuable during RFI hunting, aiding in pinpointing the source. Visitors can view the program's interface, download it at their own risk, and subscribe to the blog for updates. The page provides insights into the K4 S-Meter Recorder's functionality and usage for ham radio operators seeking to manage RFI effectively.

This presentation explores the practice of QRP (low-power) amateur radio operation in outdoor settings. It guides operators to identify their specific objectives for portable operations, which inform equipment and antenna choices. The discussion covers considerations including portability, operating modes, power requirements, and weather resistance. Various antenna designs are examined, from vertical configurations to dipoles and end-fed options, with emphasis on deployment practicality in public spaces. The presentation concludes with practical advice on selecting operating locations, RF safety, and resources for equipment and community support for QRP enthusiasts.

The Colorado QSO Party website provides information about the annual on-air amateur radio event in Colorado. Participants can make contacts with stations in all 64 counties of Colorado, with no pressure to achieve a specific number of contacts. The site encourages participation from POTA and SOTA operators, offering the opportunity to double-dip and earn bonus points for activating a park during the event.

This resource provides an in-depth look at Earth-Moon-Earth (EME) operating techniques specifically for the 432 MHz band and above. It outlines the differences in operational procedures between the 144 MHz and 432 MHz bands, emphasizing the importance of sequence lengths and scheduling. The initial calling period typically starts on the hour, with the eastern-most station calling first, which is crucial for effective communication. The document also discusses the challenges faced by operators, such as signal readability and the necessity of confirming exchanges. It highlights the significance of using a standardized procedure to enhance the likelihood of successful contacts. Additionally, it covers the use of signal reports and the importance of patience and clarity in communication, especially when dealing with weak signals. Overall, this guide serves as a valuable resource for amateur radio operators interested in improving their EME operations.

Learn about Amateur Television (ATV) on the 23 cm band (1240-1300 MHz) in this article from the September and October 2000 issue of Mégahertz magazine. Discover how ATV adds a new dimension to QSOs by allowing hams to visit stations, transmit real reports on antenna installations, follow signal paths on camera, and have simultaneous sound transmission. Explore the world of ATV experimentation, comparison, and innovation, made easier by existing equipment in many ham radio operators' homes. Find out about the ATV bands, bandwidth requirements, and the 23 cm band as a starting point for ATV activities.

The Nassau Amateur Radio Club (NARC), a Special Service Club of the ARRL, focuses on Ham Radio education to train skilled radio operators for emergency communications, foster international goodwill, and advance the radio art. Based in Nassau County on Long Island, the club is affiliated with the New York City-Long Island Section of the ARRL Hudson Division.

Parks on the Air Canada page provides information about the popular Amateur Radio activity that involves operating portable radios from designated parks and nature reserves worldwide. The page presents the objectives of the program, lists over 400 national/provincial/territorial parks, and offers insights from Tracy McKim, VE3TWM, on low power communications and outdoor ham radio operation. It also includes links to YouTube channels with how-to videos on setting up portable stations, Field Day deployment, and POTA activation. Amateur radio operators interested in combining their love for radio with outdoor adventures will find valuable resources and learning opportunities on this page.

The Young Ladies' Radio League, also known as YLRL, is an organization founded by women in 1939 with the goal of connecting and supporting female ham radio operators worldwide. From beginner classes to scholarships, YLRL offers resources and a community for women of all ages and backgrounds interested in ham radio. The website provides information on membership, upcoming events, and helpful tips for renewing licenses and getting on the air. Whether you're a seasoned ham or just starting out, YLRL is dedicated to empowering and supporting women in the world of amateur radio.

SO2R Focus Control and SO2R FC Server are freeware VB6-based tools enabling remote or local control of modern SO2R controllers (supporting OTRSP and MK2R protocols) outside contest logging sessions. The client (SO2R Focus Control) manages serial-connected controllers and can interface remotely via LAN or internet using the optional SO2R FC Server, which supports up to two concurrent clients. Key features include AUX port control with customizable labels, interlock options, AES-256 encrypted network communication, and compatibility from Windows XP through Windows 11. Designed for operators needing flexible station control—especially for remote antenna switching—both programs install cleanly via NSIS and uninstall completely.

The Easton Amateur Radio Society (EARS), founded in January 1965, supports Amateur Radio operators on Maryland's Eastern Shore by promoting knowledge sharing, training, community service, and fellowship.

The page provides details on an improved filter for the TS440 CF2 slot with better selectivity and shape factor than stock versions. It includes information on LTSpice Analysis, essential changes to capacitors, and suggestions for optimizing audio bandwidth for AM phone use. The content is geared towards hams or amateur radio operators looking to enhance their TS440 transceiver performance with filter upgrades and capacitor adjustments.

Join the World Wide Check-In every Saturday at 16:00 UTC on Talk Group 91 via the Brandmeister Network. Started in 2015 by Dick K6SUU, the net has grown with volunteer Net Controllers ensuring smooth operations. Check-in securely with a robust logging system. View log archives, upcoming nets, and schedule. Interested in becoming a Net Controller? Contact the admin team. Licensed Radio Operators can participate, while others can listen live on TG 91. Stay connected and join the global ham radio community with World Wide Check-In.

The GOTAhams Amateur Radio Club offers a welcoming environment for anyone interested in ham radio, from complete beginners to seasoned operators. They host various activities like park outings, license testing sessions, and nets, fostering a hands-on learning experience. They emphasize inclusivity with diverse member interests and ages. If you're curious about ham radio, the GOTAhams seem like a friendly club to check out.

The page discusses how Parks on the Air (POTA) in Canada offers ham radio operators the chance to set up portable stations in parks and nature reserves, combining radio communication with outdoor exploration. It also covers the World Wide Flora and Fauna (WWFF) program, which operates globally and complements POTA activities. Both programs provide unique challenges and opportunities for operators to expand their skills and connect with fellow enthusiasts worldwide. Whether you're a seasoned ham radio operator or new to the hobby, participating in POTA and WWFF can offer an exciting and rewarding experience, fostering a sense of community among radio enthusiasts who share a love for nature and communication.

AA DX Group was founded in March 1, 1974 in The Netherlands. Our members was more than 10000 from all over the World. Because during the years many of our members became "Silent Keys" or they are not active on the air anymore, we deceide to make new fresh group and to delete all old database. So, we are the new - old Alfa Alfa DX Group and you are welcome to be our member. We make avaiable all Alfa Alfa numbers for new and active CB members and SWL ( Shrot Wave Listeners ). Alfa Alfa World Wide DX Radio group is looking or ACTIVE CB Operators and SWL stations ! The New AADX team in in 2024 Main base in 178AA000 178AADX000 in Belgaria

The LICW Challenge is a daily event for ham radio operators, with special weekly on-air classes. It resets quarterly and covers bands from 160m to 2m, focusing on CW only. The event offers various point values based on member categories and bonus opportunities. Participants use specific calling frequencies and a CQ format to exchange information. Bonus points are awarded for specific criteria like contacts outside North America or special monthly members. The goal is to work as many LICW members as possible on different bands to earn points and bonuses.

Kilo Lima Radio Club is a global amateur radio community uniting operators across bands and borders.