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SvxLink is an advanced software suite for the ham radio community, initially launched in 2003 as an EchoLink application for Linux. Now a comprehensive voice services system, the SvxLink Server functions as an advanced repeater controller and can operate on simplex and duplex channels. It acts as an intermediary between transceiver hardware and applications, offering essential system services. The modular architecture of SvxLink supports customization, with modules in C++ or TCL. Key modules include a help system, parrot mode, EchoLink connectivity, DTMF repeater, voice mail, propagation warnings, and selective calling sequences. SvxLink's development and source code are available on GitHub, promoting open-source collaboration in the ham radio community.

This article explores the marriage of amateur radio and bushcraft, advocating the pleasure of setting up a portable station in nature rather than operating from the confines of a vehicle. The Parks on the Air (POTA) programme is highlighted as a catalyst for outdoor radio activities. The author shares his experiences and techniques, from transporting equipment into the wilderness to setting up shelters and antennas. Knot tying skills and the use of frogs are emphasized for efficiency, and a unique method for launching wire antennas is described. The article emphasizes the synergy between amateur radio and bushcraft skills, enhancing the enjoyment of radio operations in wilderness environments.

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.

Provides a comprehensive overview of the Hentenna design, construction methods using aluminum tubing, and discusses its bidirectional characteristics with illustrative photos

Learn how to choose the right portable antennas for backpacking as a ham radio operator. Find out the factors to consider, including weight, performance, and reliability. Understand the trade-offs involved in selecting the best antenna for your needs, based on the purpose of your trip and distance to be covered. Discover different options available and how they can help you make contacts while on the go. Get insights into one ham radio operator's portable antenna kit and the factors that influenced their choices. Explore the importance of band selection and adaptability in creating a successful antenna system for backpacking adventures.

This presentation on antennas is a practical guide for amateur radio operators. The key takeaway is that the best antenna for your station depends on your constraints and goals. There is no magic solution and buying a wire antenna is not recommended as it might be expensive and not as effective. The presentation covers different antenna types including dipoles, verticals, Yagis and loop antennas. Important factors to consider when choosing an antenna include SWR, feeder types, and whether you need a balun. The author emphasizes that ATUs don’t improve a poor antenna and advises against obsessing over SWR readings.

This page discusses the purchase of a fiberglass push-up mast for portable operations in the ham radio hobby. The author shares their experience with the MaxGain Systems MK-4-HD mast, highlighting its versatility for both home and on-the-go setups. They also detail modifications made to the mast base and provide insights on tube sizes for different antenna types. The content is useful for hams looking to improve their portable station setup and optimize antenna performance in various environments.

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 page explores the world of Software Defined Radios (SDRs) in the context of amateur radio. It discusses how SDRs have revolutionized the hobby by reducing costs and enabling remote operation. The article provides ideas for projects and experiments that hams can undertake with SDR technology, highlighting the educational and experimental opportunities it offers. It also mentions specific examples of SDR projects like the Stoke on Trent SDR and SDR.HU. The content is aimed at amateur radio operators looking to explore and harness the potential of SDRs in their stations.

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.

Don Trynor, VA3XFT, created EvoHam to provide guides, reviews, and tools to help ham radio operators navigate the world of digital voice modes like DMR, D-STAR, Yaesu Fusion, P25, NXDN, M17, and FreeDV. The website aims to make this technology more accessible and enjoyable for beginners, intermediates, and experienced hams alike by offering clear and approachable information. With years of experience in the field, EvoHam is a modern hub for all things related to digital voice in the amateur radio community.

This article provides a cost-effective and reliable method for fixing antenna elements in the traverse of HF/UHF Uda-Yaga antennas. It outlines a step-by-step process using soft galvanized steel wire, eliminating the need for special adapters or additional holes. The method described ensures a secure attachment without compromising the mechanical strength of the traverse, offering a durable solution for ham radio operators constructing antennas. The use of galvanized steel wire guarantees long-lasting stability, making it a practical and efficient technique for antenna assembly.

The article discusses the use of SDR# (SDR SHARP) software for SDR receivers, highlighting its Band Plan feature that visually represents RF spectrum allocations. The author modified SDR# to display detailed IARU HF band plans, creating three XML files for different IARU regions. These files include various operational modes and specific frequency allocations. Despite potential errors, the modifications aim to enhance the usability of SDR# for ham radio operators. The article includes references and download links for the XML files and IARU band plans.

Learn about Permeability Tuned Oscillators (PTO) and why they are useful for ham radio operators. This page covers the mechanics of PTO tuning, the components involved, and how to wind the PTO inductor. Written by Andrew Woodfield ZL2PD, this resource provides a detailed guide for building and using a PTO oscillator in your amateur radio projects.

Demonstrates the application of Software-Defined Radios (SDRs) as effective tools for conducting Radio Frequency Interference (RFI) site surveys. The resource details the methodology for capturing and analyzing RFI, specifically focusing on the 80-meter band over a 24-hour period. It outlines the setup of an SDR-based survey tool, utilizing software like _S-Meter Lite_ and _Spectrum Lab_ to visualize and quantify noise sources. The article emphasizes the SDR's wideband capabilities, which allow for comprehensive identification and documentation of RFI across broad frequency ranges, crucial for effective mitigation strategies. The analysis presents practical results, illustrating how continuous monitoring can reveal intermittent RFI sources that might otherwise go undetected. For instance, the survey identified noise peaks exceeding **S9+20dB** on 80 meters during specific hours, correlating with local appliance usage. The methodology provides a repeatable process for hams to characterize their local noise floor, enabling targeted RFI suppression efforts and improving weak-signal reception, particularly for DXing and contesting.

This website serves as a platform for announcing satellite activities, allowing amateur radio operators to publicize their plans for upcoming scheduled passes. It also offers a useful scheduling feature that provides satellite pass information tailored to your location, which you can input by entering your locator.

Inrad Roofing Filter installation instruction, The IC-775 Roofing Filter Mod consists of a 6 pole, 5 kHz wide filter followed by a high dynamic range, feedback amplifier.

This webpage offers an online antenna designer tool to calculate the dimensions for constructing a double bi-quad antenna for various frequencies. The directional antenna is suitable for UHF and higher frequencies, such as WiFi, UMTS, LORA, and mobile phone networks. It provides dimensions based on the input frequency, making it ideal for hams looking to build their own antennas for specific applications. The tool also mentions using common household materials like copper wire for construction, making it accessible for amateur radio operators with basic equipment.

During radio's early days, high frequencies were under 30 MHz due to technical limitations. As understanding grew, components improved, allowing for higher frequencies like VHF and UHF up to 3 GHz. The HF band's long wavelengths provide unique propagation challenges influenced by solar activity. VHF and UHF bands face diffraction and reflection issues but offer diverse applications, from amateur radio to 5G and GPS technologies.

This article focus on the radiation angle of vertical antennas and the fundamentals of electromagnetic wave propagation. The calculation of antenna length at 145 MHz is followed by an explanation of electromagnetic wave speed and the link between wavelength, frequency, and velocity. Author discusses the 5/8th wave vertical antenna, namely its performance and the influence of radiation angle on signal transmission. Figures and analogies demonstrate how different antenna types produce distinct radiation patterns. This highlights the importance of selecting the right antenna for a certain purpose, such as local traffic or dxing. The article discusses a variety of factors that affect antenna performance, including SWR, propagation conditions, and equipment dependability

This page offers a tool for hams to design vertical antennas for portable use on different HF/VHF/UHF bands. Vertical antennas provide omni-directional transmission and reception, making them ideal for DX contacts. By adjusting the antenna's dimensions and viewing radiation patterns and VSWR charts, hams can optimize performance in various terrains. The tool also accounts for the impact of sloping ground on elevation radiation patterns. Perfect for hams looking to enhance their portable radio setups and improve long-distance communication.

Focusing on the Indian amateur radio community, this resource provides a collection of articles covering news, technical tutorials, and DIY project instructions. It features content on various aspects of ham radio, including club activities, circuit ideas, and general information relevant to operators in India, often referencing local events and regulations. The site serves as a central point for information exchange within the region. The author, VU3HZW, shares insights and practical guidance, drawing from personal experience to present topics such as antenna construction and station setup. The content aims to support both new and experienced hams, with articles detailing specific projects and offering practical advice for improving station performance or engaging in local ham radio activities. For instance, one article might detail a simple _QRP transceiver_ build, while another could discuss optimal antenna placement for **local nets**.

This page discusses a simple receiver protection device designed by Matt Roberts for hams. The article details the purpose, construction, and usage of the RF clipper, providing useful information for ham radio operators looking to protect their equipment from RF overload. The content is practical and informative, offering a solution to a common issue faced by hams.

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.

Boondock Echo offers a revolutionary communication experience with an internet-backed recording and playback device for two-way radios. It ensures clear, reliable communication in remote or challenging conditions. Key features include real-time recording, internet connectivity, seamless integration, playback flexibility, rugged design, and a user-friendly interface. Services include product training, hardware maintenance and repair, customization, and regular firmware updates for optimal performance.

This article is from the book Ham Radio For Dummies and features some tips for portable amateur radio operations, on Field Day or generic outdoor operation, like selecting the proper antenna and portable power.

This PDF file provides detailed information on HF propagation for ham radio operators. It covers the principles of how radio signals travel over long distances, including factors that affect signal strength and propagation. The content is useful for hams looking to improve their understanding of radio communication and optimize their transmissions. Whether you're a beginner or an experienced operator, this resource offers valuable insights into HF propagation that can enhance your communication skills and efficiency on the airwaves.

This post discusses the Norcal 2N2/XX CW transceiver kit and provides suggestions for minor mods and parts substitutions. The author shares their experience assembling the kit and highlights the simplicity and joy of operating a QRP CW transceiver. The post also includes images and a list of recommended modifications towards the end. If you own or are interested in acquiring a Norcal 2N2/XX kit, this post offers valuable insights and recommendations to enhance your experience as a ham radio operator.

WaveTalkers asked AI itself what it thought. All of the content in the WaveTalkers AI Resources section is generated by AI. From the content to the code itself they will make every effort to showcase what works and what doesn't along the way.

This page gives a brief description of a 70 MHz transverter that has been published in the Danish amateur radio magazine "OZ." This way hams outside Denmark may also benefit from the design.

RadioLog is a free amateur radio logbook software for Windows 10/11 (x64) that integrates QSO logging with real-time DX Cluster spots and _RigControl_ capabilities. It supports ADIF, eQSL, and LoTW for logging and export, along with specific modules for contest operation, including automatic scoring and _Cabrillo_/EDI export for HF and VHF contests. The software also features a dedicated portable mode for SOTA, POTA, WWFF, and CB/11m activations, offering a distinct logbook for these activities. The application includes an integrated _RTL-SDR_ auxiliary monitor for visual and audio support during operation, and offers three CAT connection methods: direct RadioLog control, Hamlib managed by RadioLog, or an external rigctld server. Recent updates, such as those in v4.0.2, focus on interface polish, consistent dark theme application, and layout bug fixes, including VFO frequency display with thousands separators. The software also provides reciprocal synchronization with QRZ.com Logbook, allowing both upload and download of QSOs, and supports various digital voice modes like DMR, C4FM, D-STAR, FreeDV, and M17.

This page offers the latest version of SIMPLEX, a freeware program designed for hams to create and manage radio repeaters. Compatible with Windows XP and higher, in 32 & 64-bits, SIMPLEX supports English and French languages. Linux/Ubuntu/Android users can use WINE 1.0 or CROSSOVER to run the program. SIMPLEX allows the creation of simplex, duplex, transponder, and mixed repeaters, with features like survey functions and time/weather beacons. The package includes a DTMF encoder for testing codes. Suitable for ham radio operators looking to set up and manage their repeater systems.

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.

A low-cost Arduino project expanding on the button tutorial, where three inputs act as "buttons" generating Morse code on a WOTDUINO. This keyer, costing around £4, offers learning potential and hints at more complex ham radio applications.

Digital modes troubleshooting can be complex, even with devices like Digirig, which are designed for ease of use. This guide provides solutions for common setup issues in ham radio digital modes, applicable to Digirig and similar interfaces. Key troubleshooting tips include isolating problems, restoring previous configurations, ensuring correct USB and audio connections, and configuring software and hardware settings properly. Community forums offer additional support for specific issues.

This page presents the Arduino radio receiver project created by EasyEDA in 2024. It includes design drawings, BOM, and project details. The content is aimed at hams interested in building their own radio receiver using Arduino technology. The project is shared under a CC BY-ND 4.0 license, allowing others to replicate and modify it. The page also includes comments from project members, making it a useful resource for hams looking to explore radio receiver construction.

Online browser-based resource for your computer, tablet or other mobile device. Use this review and practice exam resource with the current editions of ARRL License Manuals.

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.

My name is Diego, I was born in Cassino, italy in 1980 and moved to Terni in 1991 and then to Recco (Genoa) in 2007. I have started my ham radio station in 2015 and I am member of c.i.s.a.r. section of Genoa. Developer of the MapForHam project, the map for radio amateurs.

Hams over IP (HOIP) is a VoIP comunication service provided by amateur radio community that offer Bridges and HoIP Extensions to ham radio opetors allowing phone communication over the internet.

Learn how LoRa mode can be used for APRS and connected mode packet radio, offering low power and long-range communication. Discover the growing popularity of LoRa-only APRS devices and the use of LoRa boards from manufacturers like Lilygo, Heltec, and RAK. Find out about firmware options like Ricardo Guzman's CA2RXU firmware, which incorporates previous work and offers KISS for external APRS clients. Explore LoRa APRS frequency and modulation settings in the UK, and consider adding CA2RXU firmware to lora-aprs.live for more radio-specific information. Dive into the world of LoRa technology for ham radio operators and experiment with different firmware options.

Discover the secrets of Six Meters with this comprehensive eBook by Jim Wilson, K5ND. Learn about the magic of 6-meter DXing, including propagation, antennas, equipment, operating software, and more. Whether you're a beginner or an experienced ham radio operator, this book covers everything you need to know. With over 8,000 downloads, this updated version includes new chapters on FT8/FT4, MSK144, and Q65 modes, as well as contesting, rover operation, and awards. Get your hands on this valuable resource and enhance your 6-meter DXing experience today.

Spectrogram, a PC-based audio frequency spectrum analyzer available from Visualization Software, aids ham radio enthusiasts in aligning receivers like Elecraft K2. Versions are downloadable, with an intuitive interface and customizable parameters. Tutorials by experts like Tom Hammond and John Grebenkemper offer additional guidance.

Recently, at the Ballarat Hamfest, the author acquired an old Marine transceiver for just $10, charmed by its sturdy construction and waterproofing. Made by Findlay Communications in Sydney, this crystal-controlled transceiver had been dormant but was reinvigorated with minor fixes. A manual was sourced, and further repairs were made, including an ingenious crystal oscillator replacement using an Si5351a controlled by an Arduino. The refurbished radio, complete with a fresh coat of paint and added customizations, is now operational for 160m AM and 30m SSB. A successful and cost-effective restoration.

This article presents a novel Top Loaded End-Fed Half-Wave (TLEFHW) antenna design for 20-meter ham radio operation. The antenna features a compact 14-foot vertical radiator with a capacitance hat configuration, eliminating the need for radials or ground systems. Using EZNEC modeling and field testing, the design achieves a 1.5:1 SWR across the 20m band with a 4.11 dBi gain. Key features include quick deployment, lightweight construction, and directional radiation pattern with 110-degree beamwidth. The design, while requiring a 45-foot footprint due to the top hat, offers an effective portable solution for amateur radio operators seeking a no-ground, no-tuner 20m antenna option.

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.

Operating Slow Scan Television (SSTV) often requires specialized software to encode and decode images for transmission over amateur radio frequencies. The _MMSSTV_YONIQ_ project provides an updated iteration of the widely used _MMSSTV_ software, originally developed by JE3HHT, incorporating modern functionalities requested by the SSTV community. This version integrates the _Omni-Rig_ system for seamless transceiver control, supports both Spanish and English interfaces, and enables direct data downloads from QRZ.com, streamlining logging and contact management for operators. The software also includes practical enhancements such as frequency memory storage, compatibility with various digital logbooks, and a visual indicator for image transmission and reception progress. Significant improvements have been made to image reception settings, allowing for more effective decoding even on systems with limited PC resources, though it can be configured for higher performance on modern machines. The development involved new code and modifications to existing source code, released under a GNU license. Installation instructions are provided, noting that the initial setup defaults to Spanish but can be easily switched to English. The project emphasizes its role as a continuation of JE3HHT's original work, aiming to keep SSTV operations current with 21st-century amateur radio practices. Support for new features is available through the MMSSTV forum on Groups.io.

This document serves as a thorough guide to amateur radio nets throughout Australia and includes some international (DX) nets. It outlines key information like frequencies, schedules, and the people responsible for managing these nets. Among the nets covered are Ron's 10 A.M. net, the Australian Travellers Net, and several others, each operating on different bands and regions. Additionally, it offers technical details about repeaters, such as frequency, offset, and CTCSS tones where applicable. Any updates are clearly marked, and further details are included for linked repeater systems and network connections.

Learn how VE6LK built a comprehensive radio go-kit for emergency communication purposes. The kit includes Yaesu FT-8800, Yaesu FT-857, LDG FT-Meter, Powerwerx SS-30 power supply, SignaLink USB interface, and more. The author shares details on the equipment, organization, and practical tips for setting up the kit. Discover how to stay prepared for public service events, disaster responses, and general ham radio activities with a well-equipped go-kit.

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.