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This article details an Inverted-L antenna design optimized for 160-meter band operation, consisting of a 10m vertical section and a 28m horizontal section supported by Spiderpoles. Despite its relatively low height compared to the wavelength, the antenna has demonstrated impressive DX capabilities, achieving contacts up to 3,453 miles into Asiatic Russia. The system incorporates a Pi-Network ATU at the base for tuning flexibility. While modeling shows a radiation pattern favoring the South, practical operation indicates effective all-round coverage on Top Band.

Operating a web-based DX cluster, this resource presents real-time amateur radio DX spots, facilitating contact logging and propagation analysis. It leverages the Spiderweb platform, offering users the ability to filter DX spots based on various criteria, including inclusion and exclusion rules. The interface integrates directly with QRZ.com for immediate callsign lookups, displaying flag icons for geographical context, and provides charts and statistics derived from spot data. Further enhancing its utility for DXers and contesters, the cluster includes direct links to MUF (Maximum Usable Frequency) maps and HamQSL solar condition reports. These external data sources provide critical propagation insights, assisting operators in making informed decisions about band selection and operating times. The service also offers Telnet access at dxc.sv5fri.eu:7300 for those preferring a command-line interface.

Launched in March 2008, this website offers news and information for amateur radio enthusiasts in the Canadian Maritime provinces of Nova Scotia, New Brunswick, and Prince Edward Island. It serves as a valuable resource for both local and visiting hams. The site provides updates on general amateur radio news, Silent Keys, Exercise Handshake, Fusion/Wires-X, and Winlink. To join the Maritime Amateur mailing list or to share information, suggestions, or questions with fellow amateurs, contact the site owner via the provided email

The International DX Amateur Radio Club provides a structured environment for amateur radio operators interested in long-distance communication. The club offers a variety of awards, including the DX Countries Award, DX United States Award, and DX Continents Award, among others. These awards recognize achievements in contacting stations across different geographical areas, such as Europe, Africa, South America, and Asia. The club also supplies resources like DX Spots, Grey Line Map, and Solar Data to assist operators in optimizing their communication strategies. The DX Code of Conduct emphasizes disciplined operating practices. Operators are encouraged to listen carefully before transmitting and ensure they have correctly identified the DX station's call sign. The guidelines advise against interfering with ongoing communications and stress the importance of patience, such as waiting for the DX station to complete a contact before calling. Operators are reminded to send their full call sign and avoid continuous calling, maintaining respect for fellow operators to foster a cooperative amateur radio community. DXZone Technical Profile: DX Awards | DX Code of Conduct | Grey Line Map

A group of amateur radio operators who use a specific telegraph key called a sideswiper or cootie key. The sideswiper is a single lever with contacts on both sides, allowing for sending Morse code by pushing the lever in one direction or the other. The group runs informal radio nets to promote the use of this key, and welcomes anyone who uses a sideswiper to join them

Operating amateur radio satellites presents unique challenges, particularly concerning antenna design and signal propagation. Juan Antonio Fernández Montaña, EA4CYQ, recounts his three-year journey into satellite communication, starting with initial guidance from EB4DKA. His early experiments involved a portable 1/4 wave VHF antenna with four 1/4 wave ground planes, designed for hand-held use to adjust polarity. This setup, paired with an FT-3000M transceiver, allowed full-duplex operation on **VHF** transmit and **UHF** receive, proving effective for early contacts on satellites like AO27, UO14, and SO35. EA4CYQ's experience highlights the critical role of coaxial cable loss and antenna polarization. After encountering significant signal degradation with longer RG213 runs, he experimented with a 1/2 inch commercial cable, noting improved reception but persistent fading due to varying satellite polarities. This led to the construction of an **Eggbeater II** antenna, an omnidirectional UHF design offering horizontal polarization at the horizon and circular right polarization at higher elevation angles. Subsequent modifications resulted in the directional **TPM2** antenna, which provided sufficient gain for LEO satellites with a wide 30-degree lobe, enabling consistent contacts from his home station. The article concludes with practical insights on the performance of the Eggbeater II for both UHF and VHF, and the TPM2 for UHF, emphasizing their utility for portable and fixed operations. EA4CYQ's journey underscores the iterative process of antenna development and the importance of adapting designs to overcome real-world propagation challenges in satellite communications.

"The QRP Adventures of VE3FI" is a captivating blog that chronicles the amateur radio experiences of Bill, VE3FI, over two decades. Holding Canadian Basic, 5-word CW, and Advanced licenses, Bill's main interests include DXing and QRP operations. The blog offers detailed accounts of his portable activations, such as a recent outing in March 2025, where he achieved impressive DX contacts on the 10-meter band using just 8 watts and a Hamstick antenna. Bill's engaging storytelling and practical insights make this blog a valuable resource for both seasoned and aspiring amateur radio enthusiasts.

The project details the construction of a GM3OXX OXO transmitter, designed to accommodate **FT-243 crystals** using 3D-printed FX-243 holders from John KC9ON. It presents specific frequency adjustments, noting a 7030 KHz HC-49/s crystal could be tuned from 7029.8 KHz to 7031.7 KHz with an internal 45pF trimmer capacitor. The build incorporates a modified keying circuit to prevent oscillator run-on key-up and includes a TX/RX switch for sidetone via a connected receiver, with the transmitter output routed to a dummy load on receive. Practical construction aspects are thoroughly covered, including the process of cutting a rectangular opening in a diecast enclosure for the FT-243 socket and the selection of a **low-pass filter** (LPF) based on the QRP Labs kit, derived from the W3NQN design. The author achieved approximately 800mW output power from a 14.75V supply, measured with an NM0S QRPoMeter, using a 16.5-ohm emitter resistor in the 2N3866 final stage. The article also touches upon the potential for frequency agility across the 40M band using multiple FX-243 units with various crystals. The narrative includes a brief diversion into Bob W3BBO's recent homebrew projects, such as his Ugly Weekender MK II transceiver, highlighting the enduring appeal of classic QRP designs. The author reflects on the personal satisfaction derived from building RF-generating equipment, irrespective of DX achievements, and shares experiences of making local contacts with the 800mW OXO transmitter on 40 meters.

Connecting to the global *EchoLink* network via a web browser simplifies internet linking for licensed amateur radio operators. This web application provides a direct interface, eliminating the need for client software installation. Users can log in with their validated callsign and password to access the system, facilitating contacts with other stations, repeaters, and conferences worldwide, much like traditional VoIP applications but tailored for amateur radio. The interface offers essential controls for managing connections, including selecting specific stations or conferences from a dropdown list, initiating a connection, and disconnecting. Features such as a 'Call CQ' button allow users to signal their availability for a contact, while options for low bandwidth operation and accepting incoming connections optimize performance and accessibility. Audio device selection ensures proper microphone and speaker integration with the web client. Validation of an amateur radio license is a prerequisite for full access, ensuring that only authorized operators utilize the network. The system prompts unvalidated users to provide an email address and password to begin the validation process, which typically involves submitting proof of license. This free service extends the reach of amateur radio communications globally, bridging geographical distances through internet connectivity.

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.

The resource details a novel approach to Morse code (CW) reception for hearing-impaired operators, focusing on a handheld device that translates CW signals into tactile vibrations. It explains how this device allows users to perceive the patterns of dots and dashes through physical feedback from a shaker, addressing the challenges of auditory discrimination for those with hearing loss. The content highlights the potential for this tactile method to aid in CW learning and interpretation, even suggesting benefits for operators with normal hearing by providing an alternative sensory input. The article also mentions the device's _patent-pending_ status and its availability to members of the _Long Island CW Club_ and the general public. It provides contact information for further inquiries about this innovative tool.

The Olivia digital mode, a **Multi-Frequency Shift Keying (MFSK)** radioteletype protocol, is specifically engineered for robust communication under difficult propagation conditions on shortwave radio bands from 3 MHz to 30 MHz. Developed by Pawel Jalocha in 2003, Olivia signals can be decoded even when the noise amplitude exceeds the digital signal by over ten times, making it highly effective for transmitting ASCII characters across noisy channels with significant fading and propagation phasing. Early on-the-air tests by Fred OH/DK4ZC and Les VK2DSG on the Europe-Australia 20-meter path demonstrated intercontinental contacts with as little as one-watt RF power under favorable conditions. Common Olivia modes are designated as X/Y, where X represents the number of tones and Y is the bandwidth in Hertz, with examples including 8/250, 16/500, and 32/1000. The resource clarifies that Olivia, unlike some other digital modes, produces a constant envelope, allowing RF power amplifiers to achieve greater conversion efficiencies and making it less prone to non-linearity. Operators are advised that **Automatic Level Control (ALC)** can be set higher than no meter movement for MFSK modulation, as long as it's not driven past its high limit, contrary to common misinformation about other digital modes. The Olivia community encourages voluntary channelization on suggested calling frequencies, such as 14.0725 MHz for 8/250, to facilitate initial contacts, especially for signals below the noise floor. The Olivia Digital DXers Club provides links to Groups.io, Facebook, and Discord for community engagement and offers details on QSO parties.

The _Colorado QSO Party_ is scheduled for **September 12, 2026**. This amateur radio event focuses on contacts with stations operating within Colorado. The _Grand Mesa Contesters of Colorado_ sponsors the event. Operators may pursue contacts across all **64 counties** of Colorado. Activations for programs such as POTA and SOTA are permissible during the event period. Logs generated from these activations are eligible for submission to both the _Colorado QSO Party_ and the associated operating program. DXZone Focus: QSO Party | Colorado | Mixed | All Amateur Bands

Examines the historical context of amateur radio, specifically focusing on Guglielmo Marconi's pioneering wireless transatlantic signal reception at Signal Hill, Newfoundland, in 1901. It describes the operation of a contemporary remote radio station at Signal Hill, utilizing the special event call sign _VD1M_ issued by Innovation, Science and Economic Development Canada. The content recounts a specific contact from Signal Hill, reporting a signal strength of 5 by 9 to a station in Sarnia, Ontario, which received the signal at 3 by 3. The narrative also introduces the concept of 'Marconi chasers' who endeavor to replicate historical transmission methods. Further, the resource discusses general amateur radio operating procedures, the evolution of the hobby, and its critical role in emergency communications, citing examples from hurricanes _Irma_ and _Maria_ in 2017 and the conflict in Ukraine in 2022.

This document provides a comprehensive guide on renewing an US amateur radio license through the Federal Communications Commission (FCC) using the new COmmission REgistration System (CORES). Published on QST October 23, it outlines the necessary steps for creating a CORES account, associating it with a Federal Registration Number (FRN), and completing the renewal application. Key points include the requirement of a $35 fee for the renewal process, which must be paid online after the application is submitted. The guide emphasizes the importance of logging into the FCC License Manager system during the renewal window and provides instructions on how to navigate the renewal process, including obtaining confirmation and access to the renewed license. Additionally, it offers contact information for FCC support and links to further resources for assistance.

Provides access to a robust DX cluster node, G6NHU-2, running DX Spider software, which facilitates real-time amateur radio contact spotting across HF bands. This service is engineered for high reliability and low latency, ensuring rapid dissemination of DX spots from a global network of interconnected nodes. It features multiple redundant links to prevent data loss and maintain continuous operation, even if individual connections drop. The cluster integrates directly with the Reverse Beacon Network (RBN), allowing users to enable or disable skimmer spots for specific modes like CW, RTTY, FT8, and FT4. It also offers an extensive one-year spot history, significantly longer than most other DX clusters, which typically retain only a month of data. The node supports various lookup commands for callsign information, beam headings, QSL routing, and FCC database lookups, enhancing operational efficiency for DXers and contesters. Additionally, it permits self-spotting, a feature increasingly relevant in modern contests, and provides detailed instructions for connecting popular logging software such as N1MM+, HamRadioDeluxe, MacLoggerDX, LOG4OM2, Logger32, and N3FJP's Amateur Contact Log.

QRZ Label is a Windows application designed for amateur radio operators to generate QSL labels using _Zebra (ZPL)_ label printers. It interfaces directly with QRZ.com to retrieve callsign and address details, and can import QSO log data from the QRZ Logbook. The software then formats this information into various label types, including standard address labels, envelope labels, greeting labels, and multi-QSO confirmation cards, all featuring an on-screen tabbed preview. The application supports the creation of QR-code labels, specifically a "QRZ Link" type, which can streamline the QSL process by providing a scannable link to the contact's QRZ.com page. This functionality enhances the traditional QSL card exchange with modern digital convenience. Developed by K7CTV, QRZ Label offers a practical utility for hams managing their QSLing workflow, providing a **free** solution for printing professional-looking labels directly from their station data. The software is distributed as a signed Windows installer.

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.

Demonstrates various technical projects and tutorials for amateur radio operators, focusing on digital modes, monitoring, and station setup. It covers topics such as implementing a _WSPR_ station, setting up ADS-B reception, configuring a _DXSpider_ cluster, and utilizing monitoring tools like Prometheus and Grafana. The resource provides practical guides for integrating modern IT solutions with ham radio activities, including Docker and Linux environments for radio applications. This site also features a publicly accessible online logbook, offering detailed statistics on QSOs by band, mode, and geographical zone, with visual mapping of contacts. It includes a comprehensive amateur radio lexicon, explaining hundreds of terms, and provides a real-time display of the F4HXN station's local weather conditions. The resource also aggregates information on upcoming ham radio events and offers a **SWR simulator** for antenna analysis, allowing users to visualize ROS changes based on frequency and antenna parameters.

Swan provides a real-time, browser-based visualization of **meteor radiants** and forward scatter corridors, serving as a modern re-imagining of the classic Virgo meteor sky visualization tool. It displays meteor radiant and radio scatter geometry, offering both visual and numerical skyview data. The tool updates in real-time, showing current sky conditions and allowing users to pause and review specific timeframes for analysis of meteor shower activity and potential radio propagation paths. This enables operators to identify optimal windows for **meteor scatter** contacts. Operators can utilize Swan to predict and optimize their meteor scatter DX attempts by understanding the geometry between their station, meteor radiants, and potential receive stations. The interface presents critical data points for assessing forward scatter opportunities, which is crucial for maximizing short-duration meteor burst communications. By observing the real-time skyview, users can correlate meteor activity with observed signal enhancements, refining their operating strategies for specific meteor showers or random meteor pings.

Demonstrates the design and modeling of a **160m** vertical antenna, dubbed the "WindoVert," specifically for urban amateur radio operators with limited space. The resource covers the theoretical underpinnings of antenna height and radiation patterns, using EZNEC software to analyze current distribution and 3D radiation patterns for various configurations, including a Marconi-style "T" antenna. It details the integration of existing antenna components, such as a Carolina Windom balun and line isolator, into the new vertical setup, and the practical measurement of feedpoint impedance using an antenna analyzer. The article further explores the challenges of achieving low-angle radiation on Top Band, emphasizing the critical role of radial systems and mitigating ground loss. Author VE1ZAC presents EZNEC models illustrating the impact of lumped components and discusses the practical considerations of resonant frequency adjustment and impedance matching for **QRP** operation. The text details the calculation of required loading coil inductance and capacitance, and shares field results, including successful DX contacts on 160m and unexpected excellent performance on 30m.

Callook provides a **USA amateur radio callsign lookup service** with data current as of March 25, 2026. The platform allows users to search for valid callsigns and retrieve detailed information, including geographic coordinates sourced from the Bing Maps API. A mathematically calculated **grid square** is derived from these coordinates, though accuracy is not guaranteed due to reliance on external services. The service supports multiple access methods, including a browser search plugin, direct API access with a reference, and plain text output for integration into other applications or scripts. This tool facilitates rapid identification of US amateur radio operators, offering an alternative to other callbook services. Its API access enables developers to integrate callsign lookup functionality into custom applications, streamlining data retrieval for logging software or contest management. The direct presentation of FCC data, combined with grid square calculation, assists DXers and contesters in verifying contact information and location details during on-air operations.

Cloudlog Helper addresses the need for streamlined, automated logging of amateur radio contacts, particularly for operators utilizing digital modes like FT8 or those with limited system resources. This utility syncs real-time rig data and QSO information to various logging platforms, including _Cloudlog_ and Wavelog, supporting mainstream transceivers. It integrates seamlessly with popular digital mode software such as JTDX and WSJT-X, ensuring that contact details are captured and uploaded without manual intervention. Operators can compile the software themselves and configure essential settings, including their Maidenhead locator, Cloudlog server address, API key, and station ID. The application's design prioritizes efficiency and portability, making it a practical solution for hams who prefer automated logging processes. While an unofficial community project, Cloudlog Helper provides a robust framework for automating the often-tedious task of logging, supporting multiple logging services beyond its primary integration. It offers a direct method for hams to maintain accurate and up-to-date logbooks with minimal effort, potentially improving their DXCC or other award tracking by ensuring no QSO is missed.

The Florida AM Group operates a weekly Amplitude Modulation (AM) net on 3885 kHz every Sunday morning, with a pre-net starting at 6:30 AM Eastern Time and the formal net at 7:00 AM. This group focuses on the preservation, restoration, and on-air operation of antique Amateur, commercial, homebrew (HB), and Military Radio equipment, emphasizing **Amplitude Modulation** (AM) mode. Participants are encouraged to use AM mode, regardless of whether they possess vintage gear, fostering a community around classic radio operation and the distinctive high-fidelity audio associated with **vacuum tube** equipment. The net utilizes NetLogger software for check-ins and round table management, providing a structured environment for participants. The group regularly publishes net control schedules, listing operators like NZ1Q, K1HH, and W3XM, and organizes various in-person events such as Hamcation gatherings, luncheons, and boat anchor swap meets. These activities facilitate eyeball QSOs and equipment exchanges, reinforcing the community aspect beyond on-air operations. The Florida AM Group also provides contact information for net control volunteers and shares news, including SK (Silent Key) announcements for members like Steve KI4RUS and Roy W4IDD, highlighting the group's long-standing camaraderie and shared passion for AM radio.

The HD8G DXpedition will take place in the stunning Galapagos Islands from April 18 to April 26, 2025. This operation will involve 26 dedicated amateur radio operators activating the islands, which are designated as IOTA SA-004. The team aims to make a significant number of contacts, providing an exciting opportunity for DXers and enthusiasts to work this unique location. With a rich history and diverse wildlife, the Galapagos Islands offer a picturesque backdrop for this event. Participants can expect to engage in various modes of operation, including SSB and CW, as the team works to log as many QSOs as possible. The DXpedition is anticipated to generate a high volume of activity, with operators from multiple countries contributing to the effort. This is a prime opportunity for those looking to add a rare entity to their DXCC list or simply enjoy the thrill of working a special event from a remote location.

Presents detailed expedition charts and statistics for the **XX9W** DXpedition, covering operating time, total QSOs, unique calls, and duplicate QSOs. The resource provides comprehensive band and mode breakdowns, including FT8, SSB, CW, and FM, across 80m, 40m, 30m, 20m, 17m, 15m, 12m, 10m, 6m, 2m, and 70cm. Users can access DXCC statistics by band and mode, daily QSO totals, and multiband QSO statistics. Continent-by-mode and continent-by-band breakdowns are also available, detailing activity from Africa, Asia, Europe, North America, Oceania, and South America. The platform also tracks the expedition's impact on user totals, showing new band, new mode, new band + new mode, new slot, and new DXCC contacts.

The Alfa Alfa (AA) DX Group, established on March 1, 1974, in the Netherlands, is presented as the pioneering Dutch 27mc DX group. It details the group's historical significance, particularly its revolutionary use of the '000' club callsign (19AA000) which influenced international 11-meter group callsign structures. The resource outlines the group's re-establishment in 2024, inviting new active CB operators and _Short Wave Listeners_ (SWL) to join its ranks, emphasizing a free worldwide membership model. Membership requirements are specified, focusing on active participation with an assigned AA callsign. The group provides QSL card management services, with options for direct QSL requests requiring **3 USD** and a Self-Addressed Envelope, or **4 USD** via PayPal for expenses. It also mentions upcoming initiatives like an _AA DX Contest_ and an award program, with sections for certificates and plaques currently under construction. The site also lists useful CB resources, including an 11M DX Cluster and an 11M Callsign Database, and provides contact information for the founder, 19AA001 Mr. Theo, and the Worldwide QSL Manager, 178AA001 Mr. Emil, based in Bulgaria.

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.

Manages log consistency across multiple digital mode applications, specifically addressing the common issue of log divergence between _MSHV_ and _WSJT-X_ for FT8, FT4, and other weak-signal modes. This prevents duplicate contacts and ensures accurate DX tracking when using both programs. The utility computes a deduplicated union of entries from both `_mshvlog.edim` and `_wsjtx.log` files, then updates each log with missing QSOs. It supports a deduplication key based on callsign, date, time (to the minute), band (derived from frequency), and mode. The tool is available as a standalone Windows executable or a Python version requiring Python 3 with _Tkinter_. Users select log folders, close both applications, and initiate the 'Merge' function. The process includes automatic timestamped backups of log files before any modifications, safeguarding QSO data.

Over 44,000 square kilometers of Scotland's natural beauty provide a unique backdrop for the _GMFF_ award program. Designed for amateur radio operators who thrive on portable operations, this program encourages activators to set up stations in designated flora and fauna areas. Participants engage in _SSB_ and _CW_ modes, making contacts from these scenic locations, which are part of the _WorldWide Flora and Fauna_ network. Activators and chasers alike benefit from the program's structure, which awards points for successful contacts. The _GMFF_ program is part of a larger global initiative, allowing operators to contribute to conservation awareness while enjoying their hobby. With a focus on environmental preservation, the program aligns amateur radio activities with ecological interests, promoting responsible and sustainable operating practices. The program's website provides resources for participants, including maps of designated areas and guidelines for operation. By participating, operators not only enjoy the challenge of portable operation but also support the conservation of natural habitats. The _GMFF_ program thus combines the thrill of amateur radio with a commitment to environmental stewardship.

The State QSO Party Challenge is an annual program recognizing amateur radio operators' participation in U.S. State and Canadian Province QSO parties. To qualify for the SQP Challenge, participants must make at least two QSOs in a minimum of two SQP Approved QP contests and submit their scores to 3830Scores.com. The site details the SQP Mobile/Portable Challenge, an overlay competition encouraging mobile/portable operations, with scoring identical to the main SQP Challenge: (Number of QPs entered) x (Number of QSOs) = Score. Eligibility for the Mobile/Portable Challenge requires prior qualification for the SQP Challenge. The website also mentions a State QSO Party Club Challenge and provides contact information for questions. The 2026 SQP Challenge will be dedicated to Stan Zawrotny, K4SBZ, a key team member instrumental in the program's development. Participants are recognized for reaching five levels of achievement: Bronze, Silver, Gold, Platinum, and Diamond. Scores are calculated by totaling reported contacts and multiplying by the number of SQPs entered year-to-date, encouraging more entries and longer operating times. The Worked All QSO Parties (WAQP) program, sponsored by Icom America, offers certificates for participating in at least 50% of approved contests, with a goal of participating in all. WAQP requires submitting a log with at least two valid contacts to the contest manager, in addition to the 3830scores.com submission.