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University of Bristol Amateur Radio Society

Ham radio club serving Edmonds and Woodway Washington.

The Pacific Seafarer's Net is an amateur radio communications net organized to provide support, assistance and daily tracking for maritime operators.

A learning aid for prospective amateurs and administrative tool for accredited examiners.

QSO Recorder Indexing service. This site allows radio amateurs to share their contest and DXpedition audio recordings, usually made with the N1MM Logger+ and the Qsorder plugin

First released in 1988, _SWLog_ is a comprehensive suite of applications providing logging and remote control for both amateur radio and shortwave, utility, and broadcast listening. It integrates program schedules from sources like _HFCC_, _ILGRadio_, and _EiBi_ for broadcast reception, while also linking with amateur radio logbooks such as _ClubLog_, _eQSL_, _QRZ_, and _LoTW_. The software supports radio control for various transceivers, including _Flex_, Icom, Yaesu, and Kenwood, alongside interfaces like _FLRig_, _OmniRig_, and _HamLib_. Mobile applications for Android and iOS facilitate on-the-go logging and remote control, seamlessly transferring logs without manual ADIF export. _SWLog_ leverages an enterprise-grade relational database (SQL Server) for robust data management and analytics, enabling features like mapping QSOs by band or state. It offers specific integrations for _POTA_ monitoring, displaying active spots with real-time propagation and automatic radio tuning. The application's scalability allows multiple users to log to a centralized database, suitable for Field Day or DXpeditions. The user interface features modern aesthetics with light, dark, and gray themes, the latter optimized for outdoor visibility during activities like _POTA_ or _SOTA_. The Plus Edition, available for an annual fee, expands capabilities with advanced QSL integration, additional map providers, and enhanced propagation calculations using _VOACAP_.

Barry County, Michigan, USA

The South Manchester Radio and Computing Club (SMRCC) provides a vibrant community for radio amateurs and computing enthusiasts in Sale, Cheshire, UK. Established as an active local club, it hosts regular weekly talks covering diverse subjects within both amateur radio and general computing. Members engage in various activities, fostering knowledge exchange and practical skills development across different facets of the hobby. The club's focus extends to supporting members in their pursuit of radio operating, technical projects, and digital communication methods. With a consistent schedule of meetings, SMRCC aims to be a central hub for local hams and those interested in the intersection of radio and computer technology. The club's activities contribute to the local amateur radio scene, offering opportunities for learning and social interaction.

DXSPOTS is a Telnet connection program. It allows radio amateurs with a lot of DX traffic to know instantly the status of the bands and to know which DX are currently on the air. Following the Packet-Clusters where data was transmitted on VHF/UHF via dedicated relays and sometimes on HF at a very low speed (300Bds on HF), the Internet has taken over and is now transmitting DX information via the computers in most shacks. Translated with www.DeepL.com/Translator (free version)

Amateur Radio Expedition to Juan de Nova Isl. FT4JA March 29th - April 11th 2016

LB3HC's hightech blog - Amateur radio, RF design, electronics, uC, software, Arduino, AVR, Antennas

This article is designed as an introduction to some of the more popular digital modes. From HSCW to FT8 and interesting article with detailed information on popular and historical amateur radio digital modes.

The Martello Tower Group is an amateur radio group which was originally formed in the late 1980s under the name ClackPak.

Details the operational scope and maintenance requirements for the Gloucestershire Repeater Group's amateur radio repeater network. It outlines the financial obligations associated with site rent, electricity, insurance, and professional aerial maintenance, emphasizing the necessity of member support or donations for sustained operation. The resource provides information on accessing individual repeater systems via the site menu. It also announces the 2026 Annual General Meeting (AGM) details, including the date, time, and location at The Robins Nest, Cheltenham Town Football Club, noting the venue is shared with the Cheltenham Amateur Radio Association. The page highlights the availability of the repeaters to all licensed radio amateurs and details how to contribute to their upkeep through membership or direct donations.

The Strategic Air Command Memorial Amateur Radio Club

The Tyler County Amateur Radio Association (TCARA) serves as a focal point for amateur radio operators in Woodville, Texas, and surrounding areas, emphasizing knowledge sharing and skill advancement among its members. The association actively participates in public service communications, including _ARES_, _RACES_, and _Skywarn_ initiatives, demonstrating a commitment to community support through amateur radio. Regular meetings are held on the first Thursday of each month at 6 PM at Calvary Baptist Church, 909 N Magnolia St, Woodville, TX, providing a consistent venue for fellowship and operational planning. TCARA facilitates amateur radio license examinations, offering testing sessions for all license classes, from Technician to Amateur Extra. This commitment to education supports new hams entering the hobby and existing operators upgrading their privileges. Prospective members or individuals interested in licensing, Technician classes, or general club activities are encouraged to reach out via email for further information, indicating a direct channel for engagement.

This article describes the construction of a three-band vertical antenna for the WARC bands (10, 18, and 24.9 MHz). Unlike a previous design using thin wire requiring a complex matching device, this version uses a telescopic set of pipes, reducing reactances and simplifying the matching device to two coils and two capacitors. The article provides details on the antenna model, the matching device circuit, and tuning methods, including the use of frameless coils and variable capacitors. With proper tuning, the antenna achieves a VSWR not exceeding 1.3 across all bands, demonstrating a practical and efficient design for amateur radio enthusiasts.

Review of Ameritron AL-82 HF amplifier, owned for three years now, and over that time, it has given me incredible performance on all bands. Inclueds a comprehensive usage report and a summary on Pro and Cons of this amateur radio RF amplifier

The Worthing and District Amateur Radio Club

The kent repeater group provides amateur radio repeaters on 6 sites in the county

NearSys (Near Space Systems) is a multifaceted organization, with interests in near space exploration, microcontrollers, robotics, space, and astronomy. Includes a section dedicsated to Amateur Radio High Altitude Ballooning

Association of NC State University alumni who are amateur radio operators.

This page provides a fully customizable band plan. You can easily customize the frequency limits, scale, define custom windows for modes and activities, adding or removing bands. You can tehn Export to PDF or print the bandplan to distribute the document to help hams operating within the designated spectrum efficiently. Useful for both new and experienced hams looking to produce their custom bandplan.

The _G3TSO_ Mobile Antenna Page details construction and tuning methods for mobile antennas operating across **10 to 160 metres**. The content describes a Hustler-based design, optimized for RF performance and vehicle speeds, featuring centre loading. For optimal operation on various bands, the loading coil placement requires clearance from the vehicle body. Antenna resonance is critical for efficient mobile operation. A mobile antenna's base impedance may be as low as 27 ohms, requiring specific matching to achieve maximum radiation, as a minimum SWR at the transmitter does not always indicate resonance or maximum output. Tuning involves physical adjustment of antenna length to achieve resonance at the operating frequency. The _G3TSO_ page outlines a tuning procedure utilizing a low-power signal source and a field strength meter to identify maximum radiation before impedance matching. Loading coil placement, either at the base, center, or top of the antenna, influences radiation efficiency and mechanical stability for mobile installations. Centre-loaded whips, such as the Hustler design, offer a compromise between efficiency and stability, often for single-band operation. Helically wound antennas, including those for **28 MHz**, may present base impedances around 17 ohms, resulting in a 3:1 SWR at resonance. Low resistance grounding at the antenna base is also specified for optimizing performance and minimizing RFI during mobile operation. DXZone Focus: Mobile | Any | Antenna Tuning | HF

Over 15 years of continuous operation, Ham365 provides a web-based logging solution for Amateur Radio Operators, allowing them to maintain and share their QSO records online. Originally launched as the online logbook component of Ham Radio Deluxe, it has since evolved into an independent platform, now integrating with numerous other logging applications. The platform shares its database with HRDLOG.net, ensuring that operations performed on one site are reflected on the other, maintaining data consistency for users. Key features include an overview of the latest hour's activity, a display of the most recent QSOs, and a map visualizing recent contacts. It also highlights "Most Wanted" entities and ongoing DXpeditions, providing a dynamic view of current amateur radio activity. The logbook supports various operating modes, including SSB, RTTY, PSK31, and FT8, and handles ADIF data for interoperability. Users can manage their logbooks, track DX activity, and utilize features like OQRS (Online QSL Request System) through its integrated functionalities. The system is designed to be accessible to a wide range of operators, from casual ragchewers to avid DXers and contesters.

An International Educational and Scientific Organization Founded in August of 1952

Operating an amateur radio station effectively requires reliable coaxial cable to minimize signal loss between the transceiver and antenna. SIVA Cavi, an Italian manufacturer, produces a range of coaxial cables, including specific 50 Ohm low-loss types suitable for amateur radio applications. Their product line features cables like **RG 58 SHF1**, **RG 213 SHF1**, and **RF 400 SHF1**, which are commonly deployed in HF and VHF/UHF setups. The company also offers specialized cables such as the **HF 214 UF Ultraflex**, a high-performance broadband low-loss 50 Ohm cable designed for flexibility and reduced attenuation across various amateur bands. These cables are engineered with solid or foam dielectric materials, impacting their electrical characteristics and suitability for different power levels and frequency ranges. For instance, foam dielectric cables often exhibit lower loss at higher frequencies, a critical factor for VHF/UHF operations. Beyond amateur radio, SIVA Cavi manufactures cables for digital video broadcast, offshore marine use, and fire detecting systems, demonstrating a broad engineering capability in coaxial cable technology.

This is some general information about the lowell amateur radio club!

Amateur radio dealer based in Switzerland

QRPhamradiokits is an online shop for custom amateur radio kits including QRP transceiver kits, tuners, cw keyers, VFO DDS, part and components

An original amateur radio blog in Esperanto lenguage, all about ham radio, DX, antenna.

Livingston amateur radio club site

Over 500 downloads indicate _aLog365_ is a widely adopted mobile logbook for amateur radio operators, specifically designed for portable operations. It facilitates callsign lookup, real-time QSO uploads to _HRDLOG.net_ / _Ham365_, and offers CAT control via Bluetooth for radio integration. The application supports various export formats, including ADIF, EDI, CSV, and Cabrillo, ensuring compatibility with other logging software and contest submissions. Key features include an integrated DX Cluster and a DXpedition plan, providing operators with current propagation information and upcoming rare entity activations. A unique Instant QSL (iQSL) viewing capability allows for immediate confirmation of successful radio contacts. The app also supports SOTA, POTA, and WWFF operations, making it a versatile tool for activators and hunters alike. Developed by IW1QLH, the application is regularly updated, with the latest version improving performance and stability, and adding Spanish, French, and German language support.

HamAward is a cloud based amateur radio logbook allowing multi operators multi station activities, featuring real time cloud logging with live score counters. This online tool is addressed to support multi station award operations and management.

Southwest Michigan Amateur Radio Team

Personal page of the Dutch Amateur Radio Station PA1CW

Saltash & District Amateur Radio Club

This page presents an online calculator tool for determining the dimensions of various HF wire antennas operating between 1.8-30 MHz. Users input their desired resonant frequency to obtain precise measurements for four popular antenna types: standard flat-top dipole, inverted Vee, quad loop, and equilateral delta loop. The calculator provides comprehensive measurements including leg lengths, minimum heights, horizontal spreads, and feedpoint distances. Accompanying the calculator are detailed technical explanations, construction notes, and installation guidelines for each antenna type, making it a practical resource for amateur radio operators building their own antennas.

The morsecodeworld.org web application provides an online Morse code decoder and encoder, facilitating real-time conversion between text and International Morse code. It supports adjustable transmission speed (Words Per Minute), sidetone frequency pitch (Hz), and output volume, allowing users to customize their learning and practice environment. The tool includes a quick reference chart for the Morse alphabet and focuses exclusively on International Morse, aligning with contemporary amateur radio licensing and on-air practices, distinguishing it from historical American Morse code. This web-based utility enables users to type text for encoding into Morse audio or paste Morse code for decoding into plain text, offering immediate feedback on timing and character spacing. It supports both visual and auditory learning by providing adjustable parameters for speed and tone. The platform is designed for self-assessment, encouraging users to practice copying and sending, and to identify and correct common errors in character recognition and timing.

Risca and District Amateur Radio Society Tredegar Terrace Risca Nr Newport

The Sheffield Amateur radio Club was founded in the 1920 and has a very long history of Amateur radio in Sheffield.

List of Worldwide HF Beacons published by RSGB. The beacon service is a vital part of amateur radio propagation knowledge. Updates to the HF list, which is is a heavily edit form of the G3USF list, are continued by the current committee. It now only contains beacons that are known to be active and have been heard recently.

Representing the interests of Amateur Radio in Berkshire & the Thames Valley since 1934

The Washington County Amateur Radio Club (WCARC) was formally established on June 26, 2014, serving amateur radio operators and enthusiasts in Washington County, Texas. The club provides a local community for hams to gather, share knowledge, and participate in various radio activities. Its formation date indicates a relatively recent establishment within the amateur radio landscape. The WCARC aims to foster interest in amateur radio, offering a welcoming environment for both licensed operators and individuals new to the hobby. Membership is open to anyone with an interest in amateur radio, promoting engagement across different experience levels. The club's activities likely include regular meetings, field operations, and support for emergency communications within the local area.

2E0RDj Amateur Radio Station in Beachley, Nr Chepstow. IO81QP. Projects, Radio & Weather.

RDF Equipment Ideas for VHF Foxhunting and Radio-Orienteering. This information is primarily for the Amateur Radio two-meter band

This article discusses suitable first HF antenna options for amateur radio operators with limited space. It recommends an Off-Center Fed (OCF) Dipole and a Vertical Dipole, detailing the installation processes, considerations for stealth and ease of setup, and the characteristics that make them ideal for newcomers. Safety warnings and maintenance tips are provided to ensure effective and secure operation.

SPARC The Saltlake Peaks Amateur Radio Club, founded by employees of L-3 Communications located in Salt Lake City, Utah at the Communications Systems West Division.

MRRC is a club of amateur radio operators who are interested in on-the-air radio competition

This page provides instructions and links to download the latest APK version of APRSdroid and the Mobile HUD for ham radio operators. It also includes information on manually granting storage permissions for offline mapping files on Android 11+ devices. The page offers guidance on setting up and using offline maps in APRSdroid with OpenStreetMap.org. Various mapping options and providers are mentioned, along with a recommendation to support the author on Patreon. Overall, this resource aims to assist hams in effectively utilizing APRSdroid for their amateur radio activities.