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DXFile is a Windows shareware application designed for amateur radio operators, providing comprehensive log management capabilities. The software, developed in Pascal, facilitates real-time and deferred QSO entry, automatically populating fields like frequency, mode, and DXCC country based on user input and system time. It includes features for searching, modifying, and deleting QSO records, with options to sort logs by date, callsign, or entry order. The program offers various printing functions, including QSL card labels in multiple formats, and can generate standard logbook printouts. Beyond basic logging, DXFile integrates modules for tracking progress towards major operating awards such as DXCC, _IOTA_, WAZ, WAS, DDFM, and DIFM. It provides detailed summaries of contacts by band and mode, including graphical representations of HF traffic. A dedicated QSL Manager module assists in processing received QSLs, allowing users to mark confirmations and print multi-line QSL labels. The application also incorporates a DXCC list viewer, which can be updated to ensure accurate country and zone data for logging and award tracking. A distinctive feature is its HF propagation prediction module, which calculates optimal frequencies and signal levels for paths between **250 km** and **6000 km**, considering both E and F layer ionospheric conditions. This module helps operators determine the best times for long-distance contacts. Additionally, DXFile includes a _Web-Cluster_ interface, enabling connection to various DX cluster servers like DXLITE, DXSCAPE, and NC7J for real-time spot information.

The NOAA/GML Solar Calculator provides critical data for **solar position** and timing, including sunrise, sunset, and solar noon, for any geographic location on Earth. Users can input specific dates and times, or select from predefined locations such as World Cities, U.S. Cities, GML Observatories, and GML Data Sites. The interface allows for precise geographical input by dragging a red pin on an interactive map, complemented by extensive time zone selections and UTC offset adjustments. Key outputs include the Equation of Time, Solar Declination, and the sun's azimuth in degrees at local time. The tool also generates comprehensive sunrise/sunset tables for an entire year, opening these data sets in a new browser tab for easy access and analysis. While the calculator remains operational, NOAA explicitly states it is no longer actively supported or maintained, advising users that accuracy and functionality cannot be guaranteed, and no further updates or technical support will be provided. Despite the lack of ongoing support, the resource details the underlying calculations and offers spreadsheets for users interested in performing their own solar data computations. It also includes links to older versions of the solar calculator and a glossary of relevant terms, serving as a reference for understanding solar mechanics and their impact on radio propagation.

About LoRa, wireless communication technology designed to transmit data over long distances. LoRa provides a means for wireless data transmission over long distances with low power consumption. Practical applications of LoRa in amateur radio

The database of Chinese ham radios. We are here to show you that you do not need expensive kit from big brands to have fun with ham radio. With the explosion of open source designs, cheap manufacturing, and global delivery, you can now get on the bands and explore for less than ever before.

MLog 0.8d is a freeware logging software designed for Windows operating systems (NT, 98, ME, 2000, XP) that facilitates the logging, management, and analysis of amateur radio QSOs. It features a customizable input mask for rapid contest logging, a robust search function for existing contacts, and immediate data storage in CSV format to prevent data loss. The software also includes a double-check mechanism against reference logs during callsign entry, integrated DXCC information, and a "magic field" for streamlined data input, all within a single-window interface. Key functionalities include graphical QSL card management via _QSL-Collection_, CW output through soundcard or PC speaker, and direct access to _Radio Amateur Callbook_ data. MLog supports transceiver control via _Ham Radio Deluxe_ URLs, offers a detailed world map with locator conversions, and can launch _VOACAP_ through _HamCap_. It provides extensive data analysis options for QSLs, _Locator_ large fields, _DOKs_, _DXCCs_, QSO counts, and user-defined contest evaluations, alongside flexible import/export capabilities for various log formats.

A basic introductionto APRS on HF Bands for radioamateurs and how to setup an APRS tracker using Argent Data Systems T3 Mini TNC device, configured and assemble ready for portable operations.

Hamradio_copilot is an open-source tool designed for DXers and contesters who need real-time situational awareness. It is ideal for operators who want to visualize propagation trends instantly rather than scrolling through raw text streams of cluster spots. Rally acting as a copilot for your station, this tool transforms raw data into actionable intelligence. By visualizing Signal-to-Noise Ratios (SNR) across different bands, it helps operators make quick decisions on which band to prioritize or where to point their antennas, effectively showing not just who is on air, but where the propagation is currently open from your location. This is a fantastic information for avid contesters. The software aggregates data from two primary services: - Reverse Beacon Network (RBN) via Telnet. - PSK Reporter via MQTT feeds. It processes this data to generate a comprehensive HTML report featuring SNR heatmaps and statistical breakdowns by ITU Zone. Users can filter data by specific zones or country codes (ADIF), analyze historic time ranges, and optionally integrate solar weather data. The complete source code is available on GitHub, allowing for community customization. It is written in Python and uses SQLite for data management.

KlaTrack is a Windows-based software application designed to assist amateur radio operators with satellite communication by predicting spacecraft visibility. It provides a simple interface to determine when specific satellites will be above the local horizon, a critical factor for successful two-way contacts via amateur radio satellites. The program processes _Two-Line Element_ (TLE) data to calculate orbital mechanics, offering a practical tool for satellite operators to plan their operating windows. It supports real-time tracking and displays essential pass information. This utility simplifies the complex task of satellite tracking, allowing operators to focus on making contacts rather than manual orbital calculations. While specific gain figures or distances are not quantified, the software's core function directly supports achieving successful satellite QSOs by providing precise pass predictions. It is particularly useful for operators engaging in activities like working the International Space Station (ISS) or other low-Earth orbit (LEO) satellites, where short pass times and precise timing are crucial for maximizing contact opportunities.

QSLinfo.de is a QSL manager and address database for radio amateurs, maintained by Lothar, DL1SBF for more than 25 years already.

An online database featuring current and historical weather balloons, complete with a fully searchable archive that can be filtered by launch site. The integrated map shows both the current and historical trajectories of radiosondes, from their launch points to their final landing positions.

SkyRoof is an open-source, 64-bit Windows application designed for amateur radio operators and satellite enthusiasts, combining satellite tracking and Software Defined Radio (SDR) functionality in a unified platform. The software provides real-time satellite tracking, pass predictions, and visual representations through Sky View, Earth View, and Timeline displays. It features an SDR-based waterfall display covering VHF/UHF satellite segments with Doppler-corrected frequency scales, automatic satellite labeling, and visual tuning capabilities. SkyRoof supports various SDR devices (Airspy Mini, SDRplay, RTL-SDR), external transceiver CAT control, and antenna rotator integration. The application automatically downloads satellite data from SatNOGS and other sources, offers voice announcements for satellite passes, and includes comprehensive frequency control with Doppler tracking, manual corrections, and RIT functionality for enhanced satellite communication operations.

In cooperation with the URSI Ionosonde Network Advisory Group (INAG), the LGDC promotes cooperative agreements with the ionosonde observatories of the world to accept and process real-time data of HF radio monitoring of the ionosphere, and to promote a variety of investigations that benefit from the global-scale, prompt, detailed, and accurate descriptions of the ionospheric variability.

Data Decoder Utility is designed to enhance the operating experience for Flex Radio users by providing advanced connectivity to Peripheral equipment and radio control programs (RCPs) otherwise not available.

SH6 is a versatile, browser-based utility designed for the detailed analysis and visualization of amateur radio contest logs. Supporting standard formats such as Cabrillo and ADIF, the tool allows operators to upload personal files via drag-and-drop or access a searchable public archive containing over one million logs. Key capabilities include comprehensive performance metrics, offering summaries of band breakdowns, QSO rates, and beam headings. Furthermore, SH6 provides advanced geographic visualization through interactive maps, analyzing contacts by country, zone, and continent. A standout feature is the side-by-side comparison mode, enabling users to contrast two distinct logs for strategic assessment. SH6 transforms raw log data into actionable insights regarding operator performance without requiring software installation.

Spotty leverages Philip Gladstone’s pskreporter.info data, delivered via an MQTT broker by Tom Fanning (M0LTE), to offer a responsive web application for visualizing propagation. The Map View presents a default visualization (grid AA00 / callsign MY8CALL) and distinguishes signal types: small spots for signals heard by a location, large spots for transmissions from a location, and teardrop markers for transmissions from the monitored callsign. Clicking a spot reveals detailed signal data in an overlay. The application includes a Log View for raw spot data and a Settings tab for customization. Users can filter tracking by specific Callsign or Grid, with preferences saved to the browser. A notable feature is the Time to Live (TTL) setting, adjustable from the default 60 seconds, which controls spot visibility duration to manage map clutter during high-traffic periods. The tool provides a clear, logic-driven interface for real-time signal monitoring.

Over 15 amateur radio bands, from 160m to 70cm, are supported by the _DXTRON_ web cluster, providing real-time DX spotting information. This service integrates directly with the _QRZCQ_ API, allowing users to monitor activity across various modes including CW, Phone, Digi, RTTY, SSTV, and SAT. DXTRON displays critical spot data such as timestamp, spotter callsign, frequency, mode, DX call, and remarks, along with geographical details like Grid, DXCC, ITU, CQ zone, continent, and country. Developed by _DO5SSB_, DXTRON v1.42 offers a user-friendly interface for filtering spots by band and mode, catering to both casual DXers and serious contesters. The platform is designed for accessibility, providing a clear overview of current propagation conditions and active stations worldwide. This web cluster is a practical tool for hams seeking to identify rare DX, track contest activity, or simply observe band conditions. Its reliance on the QRZCQ API ensures a consistent flow of up-to-date spotting data, making it a reliable resource for real-time operational awareness.

DX Data provides a unified view of real-time DX spots, aggregating data from **DXSpider**, the **Reverse Beacon Network (RBN)**, and PSK Reporter. This online service offers advanced filtering capabilities, allowing amateur radio operators to refine spot displays by DXCC entity, band, mode, CQ zone, and continent. It addresses the challenge of sifting through numerous DX spots by presenting a consolidated stream, enabling DXers to efficiently identify active stations across various bands and modes. The platform integrates with Club Log, which assists in fine-tuning band-entity combinations based on a user's logging history, thereby reducing irrelevant spot noise. Key features include DX email alerts, PSK Reporter tracking, and a custom watchlist for monitoring specific stations or regions. The service also incorporates a live news feed from DX World, providing current information relevant to the DXing community. This design aims to streamline the DX spotting process, offering a responsive interface for identifying operating opportunities.

TNXLOG is a specialized logging application designed to complement the TNXQSO.com online service, focusing on real-time data exchange rather than serving as a standalone general-purpose logbook. The software facilitates the transmission of current **QSOs** to the TNXQSO.com server and simultaneously retrieves relevant geographical data such as RDA, Locator, and RAFA from the same server. It maintains real-time QSO statistics, providing operators with immediate feedback on their activity. Additionally, the application supports working with **CW macros** via a COM port, streamlining Morse code operations during contacts. This utility is specifically tailored for users of the TNXQSO.com service, enhancing their operational experience by automating data synchronization and providing instant access to location-specific information. Its design prioritizes integration with the online platform, making it a companion tool for those engaged in specific award programs or regional operating activities that benefit from real-time data exchange and statistics. The software's functionality is distinct from traditional logbook programs, emphasizing its role in a connected operating environment.

System Fusion is Yaesu’s implementation of Digital Amateur Radio, utilizing C4FM 4-level FSK Technology to transmit digital voice and data over the Amateur radio bands

The Score Distributor facilitates real-time score forwarding for amateur radio contests, automatically transmitting data from various logging software to multiple online scoreboards. By configuring logging applications to send score data to the Distributor, operators ensure their current score is simultaneously represented on platforms like the _Contest Online ScoreBoard_ (COSB) and the Live Contest Score Server by R4WW. This system eliminates the need to choose a single scoreboard, providing broader visibility for participants. This utility enhances the competitive experience by allowing contesters to monitor their performance against other stations throughout an event. Observing real-time standings can provide significant motivation, particularly during periods of challenging propagation or when striving to maintain pace with club members or peers. The platform supports almost all major contest logging software, simplifying integration for a wide range of operators. Developed by WA7BNM, the Score Distributor was last revised on June 14, 2023. It aggregates score data, offering a unified point of submission that then disseminates the information, ensuring a **single point of entry** for broad scoreboard coverage and improving the dynamic feedback loop for participants.

Presents an interactive **Ham Bands Explorer** web application, offering a live view of all amateur radio bands overlaid on a world map. This resource displays **CQ zones** and **ITU zones**, with geographical data sourced from HB9HIL/hamradio-zones-geojson under an MIT license. The interface provides a dynamic visualization of global band conditions, enabling operators to observe activity patterns across different regions. Users can select individual countries to retrieve and display their specific band plans, with frequency coverage details loaded from CountryData.json. The tool indicates 100% frequency coverage, ensuring comprehensive data presentation for selected regions. This functionality supports detailed analysis of national regulatory variations within the amateur spectrum. The application integrates both a map view and a live view, facilitating real-time monitoring and geographical context for band usage. It serves as a practical reference for understanding international amateur radio regulations and visualizing propagation characteristics across various frequency allocations.

The analyser has been written to support the full range of SDRplay SDR radios including the new RSP1B. The analyser is capable of resolution bandwidths of less than 1Hz with sensitivity better than -145dBm. In addition to being able to run five separate traces, the analyser offers the ability to capture screen shots, export data in a range of formats and includes a versatile marker system. The analyser includes a comprehensive user manual and offers a very useful addition to any workbench.

The article enlightens radio amateurs on utilizing real-time space weather data to optimize HF communication. Navigating through Hp30 index, MUF, f0F2, and eSFI metrics, it explains their significance in band selection and propagation forecasting. With essential links and practical insights, enthusiasts learn to discern optimal conditions for high-band DX, low-band DX, and NVIS operations. The author's observations and antenna optimization tips enrich understanding for effective HF operations.

The resource details active HF radio networks maintained by foreign ministries for diplomatic communications, specifically listing operational schedules and frequencies. It currently covers networks for Bulgaria, Czechia, Egypt, North Korea, Russia, Tunisia, and the United States. The content provides specific operational parameters for these government-run shortwave stations. Information includes details on _legacy modes_ of operation and specific transmission times. The site also includes schedules for various _number stations_ which often utilize similar HF spectrum allocations. The data presented aids in identifying and monitoring these unique, non-amateur radio signals across the shortwave bands. Specific sections are dedicated to the networks of North Korea and the United States, offering granular data for each.

TNXQSO.com offers a streamlined **log search** utility, specifically designed to consolidate QSL information for **DXpeditions** and special event stations. This online service aggregates data from prominent logging platforms such as Club Log, Logbook of The World (LoTW), and HRDLog, presenting a unified interface for radio amateurs to verify their contacts. The platform aims to simplify the process of confirming QSOs by providing direct links to the respective logging services, allowing users to quickly ascertain if their contact has been uploaded and confirmed. Users can input a callsign and band to retrieve immediate results, indicating whether a QSO is present in the linked logs. The service also supports DXpedition teams by offering tools for managing their own logs and QSL routes, without requiring an account for general log searching. This functionality proves particularly useful for DXers seeking rapid confirmation of rare contacts or for those managing their QSLing efforts across multiple platforms after a significant operating event.

HAMRS v2.52.0 provides a portable logging solution for amateur radio operators, supporting macOS, Windows, Ubuntu, Raspbian, iOS, and Android platforms. The software includes offline databases for POTA parks and US callsigns, facilitating logging without internet connectivity. It features ADIF import/export capabilities, enabling one-click uploads to QRZ.com. Rig control is supported through native _Hamlib_ and _FLRIG_ integration, alongside compatibility with _WSJT-X_ for digital modes. Recent updates in v2.50 introduced a QSO Map for visualizing contacts with band colors and filtering, real-time solar and HF/VHF propagation conditions, and a dedicated logging template for ARRL Field Day exchanges. An interactive US Band Plan displays privileges and sub-bands, while a live POTA Spots Map highlights the active park and offers license-aware spot filtering.

This page provides updated data and statistics about United States amateur radio operators, including historical totals, demographics, and geographic distributions. It also explains the Amateur Radio Service, highlighting its role in promoting wireless communication and technological advancements. The page is a valuable resource for hams interested in understanding the current landscape of amateur radio in the United States.

A data converter for the Tandy WM918 weather station. The Weather APRS data converter project aims to create an interface to interpret data from the popular Tandy WM918 weather station and format it for transmission over packet radio. The South East Radio Group in South Australia has established a network of these weather stations to provide amateurs with regularly updated weather data. However, the WM918's data output is not structured for APRS weather reporting. This project describes a solution using a PIC microcontroller to convert the WM918 data into APRS-compatible strings that can be sent as beacons or connected packets. The interface offers features like position/positionless data, connected/beacon modes, and metric/imperial units. The goal is to create an interconnected weather reporting system for amateur radio operators

This page provides construction details for a 4-element 10-meter Yagi antenna with 28 Ohm impedance. It includes information on the elements, positions, diagrams, and data related to frequency, gain, front-to-rear ratio, radiation resistance, SWR, and loss. The content is aimed at hams or radio operators interested in building and optimizing Yagi antennas for the 10-meter band.

Hostilog, developed by DF1LX using Python 3.5 and PyQT5, is a logging application designed for high-speed QSO data entry, achieving rates of 300–400 QSOs per hour from handwritten logbooks. The software prioritizes keyboard input, minimizing mouse usage for efficiency. It incorporates a cluster window with RegEx filtering capabilities and facilitates UDP transfer of QSO data to _DXkeeper_ from the _DXLab Suite_. The program supports basic rig control via _Hamlib_, with configuration examples provided for radios like the TS-590S using `rigctld`. Hostilog can process 50,000-line ADIF files in under 10 seconds and includes features for combining and sorting ADIF data. While primarily a Windows application, it runs under _WINE_ on Linux, with specific notes on Ubuntu compatibility. Recent updates, including a version from August 28, 2024, address bugs and improve UI, with documentation available in both German and English.

Bergendorffs Radiomuseum Radio Collection, images and technical data on various devices that are in the collections.

FreeDV uses an audio codec as a software based modem to decode and encode the voice and text data from your computer. The data is encoded and then is transmitted over the HF radio using AF signals that can then in turn be decoded by the receiving station.

LogConv is a versatile utility designed to convert Amateur Radio log files between various formats such as ADIF, Cabrillo, CT9, CT10, EQF, and TR Log. It offers both GUI and Command line versions for user convenience. LogConv normalizes QSO data, breaking it into separate fields for better visibility. Additionally, it can extrapolate geographic information from contest exchanges, aiding in awards tracking

Wavelog, a web-based amateur radio logbook application, launched in February 2024, represents a significant fork from the established Cloudlog platform, developed by a core team including DF2ET and DJ7NT. This open-source project focuses on delivering advancements in both stability and functionality, specifically tailored for the amateur radio community. The application allows users to manage their radio logs from diverse environments, including professional servers, standard web hosting, or even compact _Raspberry Pi_ setups. The platform distinguishes itself through its emphasis on simplicity, robust features, and versatile accessibility, enabling operators to log contacts from virtually any location. It supports various operating modes and data formats, providing a flexible solution for tracking QSOs and managing station activities. The project's development is driven by the collaborative spirit of the amateur radio community, prioritizing utility and user experience over commercial objectives. Key features include comprehensive logging capabilities, support for multiple bands and modes, and integration with common amateur radio data standards, ensuring broad utility for DXers and contesters.

Presents a dynamic platform for real-time amateur radio contest scoring, enabling participants and enthusiasts to monitor ongoing competition results. The system processes submitted contest data, displaying live scores and competitor standings as they update. Users can observe the progress of various contests, gaining immediate insight into the competitive landscape. This resource serves as a central hub for following _DX contests_ and other operating events, offering a transparent view of current standings. It facilitates an engaging experience by providing up-to-the-minute score updates, reflecting the intensity of _on-line contesting_ and the efforts of operators globally. The platform's utility extends to both active participants submitting scores and observers interested in the competitive dynamics. It aggregates data from multiple sources, presenting a consolidated view of contest activity. The system's design emphasizes rapid data processing and clear presentation of results, crucial for high-stakes events like the _CQ World Wide DX Contest_.

This amateur radio website explains how to use the free AGWPE utility program to send and receive packet data using the sound card of your PC. Note that AGWPE is a Windows-only program. This website, which is hosted on SV2AGW's web site, focuses on support for the sound card packet features of AGWPE.

Use this form to generate a list of amateur repeaters and broadcast transmitters to your specifications. The database covers the fifty U.S. states, the District of Columbia, and the ten Canadian provinces.

The XX9D Log Online provides a direct log search function for the DXpedition to Macao, specifically detailing operations conducted in 2017 and 2019. This service allows amateur radio operators to verify their contacts (QSOs) with XX9D, a critical step for QSL card management and award applications. Users are explicitly advised to consult the online log to prevent duplicate contacts on the same band and mode, optimizing efficiency during active DXpedition periods. This online tool supports the "DX Code Of Conduct," promoting ethical operating practices within the amateur radio community. The platform facilitates the Online QSL Request System (OQRS), streamlining the process for requesting QSL cards without the need for traditional bureau or direct mail methods. Operators are instructed to defer OQRS submissions until the conclusion of the DXpedition, ensuring all logs are finalized. The log search interface is powered by CMSimple, a content management system, indicating a straightforward, database-free web application. The resource is designed for ease of access, providing a clear method for DXers to confirm their contacts and manage QSL requests efficiently.

The Weather Fax plugin for OpenCPN allows you to directly open image files or decode audio faxes into images. With easy calibration, these images can be overlaid on charts. It supports image conversion in Mercator, polar, conic, and uniform coordinates and can transform any image into a raster chart. Additionally, it includes a built-in database for HF radio fax stations via SSB and another for retrieving data from meteorological websites.

In an innovative analysis, Michael G7VJR employs NeuralProphet to predict ham radio modes' usage trends. The AI model, leveraging deep learning, forecasts a steady FT8 dominance, with slight declines in CW and Phone activities. This approach simplifies statistical predictions, showcasing the power of AI in understanding complex patterns and facilitating insightful time series projections. Access the freely available Club Log data for continuous exploration.

Operating on the HF and VHF bands, the URE WebCluster serves as a real-time DX spotting network for amateur radio operators. It aggregates DX spots from various sources, presenting them with detailed information such as DX callsign, frequency, mode, and spotter details. The platform integrates essential propagation data, including current solar indices like _K-index_ and _A-index_, alongside visual propagation maps, which are crucial for planning long-distance contacts. Users can submit new DX spots, contributing to the collective intelligence of the amateur radio community, and filter existing spots by band, mode, or callsign, enhancing operational efficiency. This resource enables operators to monitor band openings and identify active DX stations, significantly aiding in _DXCC_ pursuit and contest operations. The integration of solar-terrestrial data directly within the cluster interface allows for immediate correlation between propagation conditions and observed DX activity, a feature not universally present in all web clusters. By providing both raw spot data and contextual propagation information, the URE WebCluster offers a practical tool for real-time decision-making during operating sessions, allowing hams to quickly adapt to changing band conditions and target specific _DX_ entities.

The _Amateur Radio Logbook ADIF File Analyzer_ processes ADIF files locally within the user's browser, ensuring no QSO data is uploaded to a server. It generates a visual map of contacts and detailed statistics across various parameters, including band, mode, time, grid squares, and DXCC entities. The tool offers insights into operating patterns and station performance without requiring any software installation. Users upload their ADIF log files directly, and the analysis is performed client-side, providing immediate results. The output includes charts and graphs that visualize QSO distribution and activity. This approach prioritizes user privacy and data security, as logbook information remains on the user's computer throughout the analysis process. The analyzer supports standard ADIF formats, enabling hams to quickly review their log data for trends and achievements. It is a free, open-source utility designed for general amateur radio log analysis.

The DX Jungle SatTracker is an interactive online tool designed for real-time amateur radio satellite tracking. It incorporates live Doppler correction, AMSAT satellite status, and pass predictions for various active amateur radio satellites such as ISS, SO-50, FO-29, and RS-44. The platform calculates real-time uplink and downlink frequencies, adjusting for Doppler shift, and displays satellite footprints and orbital paths on a map interface. Users can select specific satellites and input their grid square for localized pass predictions. This service integrates WebSDR support, allowing users to listen to satellite passes live without requiring a physical radio, and offers Companion radio control capabilities. Orbital data is sourced from CelesTrak, while radio frequencies are derived from AMSAT and SatNOGS. The interface provides options to filter for FM repeater-only satellites and displays active passes, ordered by the next available pass, facilitating timely operational planning for satellite enthusiasts.

This map was created from the need to have a map for WWFF activity. The thanks go to the people from WWFF who provided the very first data. At the beginning it was a simple map that didn't work on a mobile phone. Later I added more features, better backend and frontend and other data sources such as POTA, SOTA etc.

This presentation offers a beginner's guide to digital communication modes in Ham Radio, specifically PSK31 and RTTY. It covers the basics like what data modes are and the equipment needed (radio, computer, interface). It explains the technical details like PSK vs. RTTY, AFSK vs. FSK, and data transmission processes. The presentation also provides instructions on software setup, live testing procedures, and where to find data transmissions on different bands. Finally, it covers communication styles and etiquette for data QSOs.

AllScan is a free and open-source web app for AllStar nodes that provides Favorites Management features, AllStarLink Stats integration, and connection monitoring and control functions. Shows your favorites in a Dashboard summary table with Keyed status, Connected Node count and other statistics. Continually scans the status of each favorite using ASL's Stats API data showing which favorites are active and have recently been active. Allows favorites to be connected with a single click (optionally automatically disconnecting any currently connected nodes first). Allows the Favorites Table to be sorted by Node#, Name, Description, Location, etc. Favorites can be added/deleted simply by entering the node# and clicking a button. These features finally give AllStar nodes similar memory management and scan capabilities that analog radios have had for decades. AllScan is mobile-friendly and optimized for ease of use on both small and large screens. AllScan follows the latest web development standards, with PHP, JavaScript, HTML, and CSS cleanly partitioned, runs on both ASL and HamVOIP, and is very easy to install, configure, and update.

Twigger is a very lightweight, free ham radio logger designed for Windows, offering seamless integration with transceivers via _TCI_ or OmniRig. This software stores all logged contacts in a SQLite database, with the flexibility to export daily ADIF files for import into a main logger or to send real-time QSO data via UDP in N1MM XML format. It also supports direct, real-time uploads to popular online logbooks like Clublog and QRZ.com, streamlining the logging process for active operators. The application has seen continuous development, with version 1.1.34 fixing an ADIF log importer bug and earlier versions adding crucial features like WSJT-X/JTDX UDP support. Author OE3IDE, Ernst, has incorporated user feedback, including ideas and testing from MW0LGE, to refine the software. Key enhancements include the transition to SQLite for data storage in version 1.1.32, allowing for easy import of previous Twigger ADIFs upon initial startup. The logger also features integrated DX cluster support, enabling users to send spots directly and query QRZ.com for callsign information, which is then cached to reduce redundant queries. The software's compact design and essential logging capabilities make it a practical tool for casual logging or as a secondary logger during contests, with the ability to handle **25 downloads** for version 1.1.34.

Examining the demographic shifts within amateur radio, particularly concerning **radiosport** participation, this resource analyzes survey data from the National Contest Journal (NCJ) and two regional ARRL surveys. It focuses on the relationship between age and engagement in contesting, presenting findings that suggest older amateur radio operators tend to participate in more contests annually. The author, a spatial demographer, details the methodology, including data consolidation, georeferencing, and statistical analysis performed in collaboration with Dr. Scott Wright K0MD, covering ARRL November Sweepstakes participants from 2000 to 2020. The analysis also addresses the limitations inherent in using voluntary response samples rather than random samples, which may influence the generalizability of the results. Furthermore, the resource investigates the preferred sources of contest information among different age groups, noting that older contesters frequently rely on traditional publications like the NCJ, while younger participants show a preference for online platforms. This demographic review provides insights into the evolving landscape of **amateur radio contesting** and the generational differences in information consumption.

Demonstrates the capabilities of DXtreme Monitor Log 14, a specialized software application designed for radio spectrum monitoring and logging. The resource details its core functionality, which includes logging stations across various bands and supporting multiple transmission modes such as AM, CW, FM, LSB, USB, and RTTY. It highlights features like the ability to select country formats for new databases and the **Schedule Checker** tool, which assists users in identifying broadcast stations for monitoring. The software facilitates tracking **Maidenhead grid squares**, particularly useful for VHF and UHF monitoring activities. It also supports QSL management and offers tools for efficient contact logging, catering to both amateur radio operators and shortwave listeners. Specific information includes its version number, Monitor Log 14, and its utility for DXers and other radio enthusiasts in managing their monitoring experiences and logging contacts effectively.

Understanding radio wave propagation is fundamental for effective HF communication, and this guide from the Galway Radio Club elucidates the principles behind _Near Vertical Incidence Skywave_ (NVIS) operation. It begins by contrasting NVIS with line-of-sight and surface wave propagation, highlighting its utility for reliable regional coverage, particularly in challenging terrains or within the skip zone. The document explains how NVIS leverages high-angle radiation, refracting signals from the ionosphere to return to Earth within a circular region, typically up to **650 km** (400 miles) from the transmitter. The guide delves into critical factors influencing NVIS, such as the _critical frequency_ (Fo) and the Maximum Usable Frequency (MUF), emphasizing their dependence on solar activity, time of day, and season. It provides practical advice on frequency selection, noting that 40 meters is often the highest daytime NVIS band, with 60 meters and 80 meters favored as darkness falls. The author, EI5DD, suggests using an ionogram for real-time propagation data, considering it more reliable than generic ham-clocks. Antenna considerations are also covered, recommending dipoles, inverted vees, or phased dipoles positioned 0.1 to 0.25 wavelengths above ground for optimal high-angle radiation. The document mentions mobile NVIS setups, including military configurations and commercial options like the Barrett Communications roof-rack antenna, which can cost around **£2000.00**. It concludes by reinforcing NVIS as an essential technique for national emergency communications, with 5 MHz (60m) and 80 meters being primary bands for daytime and nighttime operations, respectively.