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Crawley, West Sussex UK.

A spectrum analyzer is always an usefull amateur radio test equipment that should be present in a radio shack. Hams can use it for testing frequency response of filters, amplifiers, and other two-port RF devices. This article illustrate a tracking generator compatible with any spectrum analyzer in the Tektronix 490- and 2750-series lineups

The Hurricane Watch Net (HWN) is an amateur radio organization dedicated to serving the National Hurricane Center and the public since 1965. It plays a crucial role in disseminating real-time tropical weather information for the Atlantic and Eastern Pacific regions. The HWN operates during hurricane events, providing updates and facilitating communication among amateur radio operators and emergency services. This network is essential for ensuring that communities are informed and prepared for severe weather conditions. In addition to its operational role, the HWN offers educational resources and outreach programs aimed at enhancing public awareness about hurricane preparedness. This includes providing access to tracking maps, storm surge information, and safety guidelines. The HWN encourages amateur radio operators to participate in its activities, fostering a spirit of community and collaboration in the face of natural disasters. By subscribing to their email updates, individuals can stay informed about active storms and receive vital safety information.

Personal ham radio blog by Phil VA3QR Canada

Cape otway lighthouse, home of vk3owl during the international lighthouse amateur radio weekend

The Dickson County Amateur Radio Club (DCARC) operates as a local organization for amateur radio enthusiasts in Middle Tennessee, providing a focal point for hams in the area. The club's activities typically encompass local nets, technical discussions, and support for emergency communications, aligning with the public service aspects of amateur radio. Members often engage in various operating modes and bands, sharing knowledge and experience to enhance their collective skills. Club members participate in field days, local contests, and community events, demonstrating the practical applications of amateur radio. These gatherings offer opportunities for new hams to gain practical experience and for seasoned operators to mentor others, strengthening the local amateur radio community. The DCARC serves as a hub for camaraderie and mutual support among its members, contributing to the vibrant ham radio scene in Tennessee.

HyEnd is a dutch amateur radio antenna manufacturer. Makers of the popular HyEndFeed Antennas, produce Baluns, bandpass filters and selle Line isolators, coax cables and connectors.

The Intercontinental Amateur Traffic Net (Intercon) operates daily on 14.300 MHz, providing a platform for emergency communications and facilitating third-party traffic among amateur radio operators. Established in 1960, the net aims to foster goodwill and friendly relations within the ham community. It operates from 0700 to 1200 Eastern Time, with a focus on monitoring emergency traffic while encouraging operators to maintain a distance of at least 5 kHz to avoid interference. All licensed General Class operators and above are welcome to check in, using standard phonetics for clarity. The net features rotating Net Control Station (NCS) operators every hour, ensuring a diverse range of voices and experiences. Operators are encouraged to provide relays and assist with emergency traffic when necessary. While there is currently no membership for non-NCS operators, opportunities exist for those interested in becoming NCS operators. The net emphasizes professionalism and courtesy, making it a valuable resource for both emergency communications and casual check-ins.

From buying an amateur radio transceiver, choosing the correct power supply, selecting the antenna and its feed line, to choosing the best microphone and accessories. A nice presentation for beginners.

A simple superheterodyne receiver (3.5–30 MHz) for amateur radio achieves stable SSB-CW reception using modern BJTs, an AD831 mixer, a 6-pole quartz filter, and Seiler oscillators. Designed with high IF (4.5 MHz), compact AM-FM variable capacitors, and modular resonant circuits, it ensures selectivity, image rejection, and stable tuning. Built in a copper-lined wooden case, it features practical assembly techniques but lacks advanced features like AGC or S-meter. Effective on basic antennas, it achieves global reception.

SX5F DX-PLUS Hellenic Amateur Radio Team FARMAKONISI rocky Islet EU-001, 14 to 22 May 2011 & Lighthouse Farmakonisi,

The York Region Amateur Radio Club was founded in 1959 by amateurs interested in sharing knowledge of radio communications.

Is for those who wish to explore the globe by radio and experiment with electronics.

Super Simple APRS Position Reporter. This project idea has been in response to the more hardware heavy Raspberry Pi projects that involve extra TNC hardware, additional sound cards, and custom cabling. This APRS position reporter is done using a Raspberry Pi B+, USB GPS receiver, Baofeng UV-5R, and a mono 3.5mm audio cable between the Pi and HT.

The HF Beacon Tracker is an advanced interactive tool designed for DXers and ham radio opoerators in general to monitor active beacons operating below 14 MHz. Built upon a high-fidelity 3D Earth globe, the application provides a spatial perspective on signal paths by integrating real-time environmental data with a comprehensive beacon database curated by Mirek OK1DUB. Beacons are plotted using precise Maidenhead locators and feature a real-time day/night terminator overlay to help operators identify Gray Line propagation opportunities. With a single click, users can calculate the exact distance from their own QTH to any beacon, visualized via an animated Great-Circle Path arc on the globe surface. To enhance its diagnostic capabilities, the tool seamlessly integrates with PSK Reporter, allowing users to right-click CW beacons to instantly fetch current reception reports and signal strength data. The interface is fully optimized with a mobile-responsive design, smooth globe rotation, and togglable Dark/Light themes suitable for any shack environment. Whether you are performing antenna gain tests, conducting ionospheric research, or simply hunting for band openings, the HF Beacon Tracker transforms raw database information into an intuitive, visual diagnostic suite. It serves as an essential asset for any operator looking to master HF band conditions.

MDARC

Qatar Amateur Radio Society

Custom embroidered hats, shirts and jackets to Ham Radio Operators small businesses, ARES, ARRL and RACES clubs across America.

The QMX+ Transceiver Kit from QRP Labs is a high-performance, feature-packed 160-6m 5W transceiver designed for hams. This multi-mode kit includes embedded SDR, USB sound card, CAT control, synthesized VFO, RTC, and optional internal GPS. It can be used in CW, digital, and SSB modes, with standalone CW operation, digi mode via USB to PC, or SSB operation. The kit offers standalone beacon functionality and shares firmware with the QMX model. With an optional enclosure, battery-backed RTC, and GPS, the QMX+ is versatile and easy to build, making it ideal for ham radio operators looking for a customizable transceiver kit.

Wuxi Venus Information Technology is an amateur radio devices dealer in China, source for high end, high performance RF products,Control products,APRS products and Commercial products. It provides a variety of solutions to the antennas systems, APRS,electronics kits and electronics components

This document provides a detailed guide on constructing and mounting a folded dipol for the 146 MHz frequency in a vertical configuration to be used in Yagi antennas. The step-by-step instructions and diagrams included make it easy for hams to build and set up this type of antenna. Understanding and implementing this design can enhance the performance of radio communication for Amateurs operating in the 2-meter band. Whether you are looking to improve your signal strength or experiment with antenna designs, this resource offers valuable insights and practical information.

Ham radio activity and homebrew from Italy with some interesting article on QRSS, decoding interfaces, APRS and antennas

Disney Emergency Amateur Radio Service

RSGB Affiliated club

Online HF Communication prediction system provided by the Australian Governament Buerau of Metereology allow to predict usable frequency rage for radiocommunications between two stations allowing to specify frequency and date range. This tool allow calculation with different methods and algorithms

The ICOM IC-7610 SDR HF/50MHz Transceiver official product page with product specifications, option accessories and video at ICOM UK

G3ztt mid cheshire amateur radio society, cheshire uk

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

The amateur radio listener for when you're not on the radio. Repeater-START, the offline repeater listing app for Windows, Linux, Raspberry Pi, Ubuntu, Librem Phone is available, Now with grid square display, topographical maps and frequency preferences

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.

Amateur Radio Club Elda Spain

Amateur radio uhf repeater covering the bristol area - callsign gb3bs

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.

Receiving **GOES-16** and **GOES-17** weather satellite imagery requires a specific hardware and software configuration, detailed in this practical guide. The author outlines the necessary components, including a Raspberry Pi, an RTL-SDR dongle, a suitable LNA with SAW filter for 1.69 GHz, and a parabolic grid antenna. This setup enables direct reception of high-resolution weather data, a fascinating aspect of amateur radio satellite operations. The installation process begins with preparing the Raspberry Pi, followed by updating the system and installing essential dependencies like `git`, `build-essential`, and `cmake`. A critical step involves compiling and installing `librtlsdr` from source, ensuring proper driver setup and blacklisting conflicting DVB drivers. The guide then walks through testing the RTL-SDR dongle to confirm device recognition and troubleshoot common issues like USB power or driver installation problems. Finally, the instructions cover cloning and building `goestools`, a software suite essential for processing the satellite signals. This compilation, while time-consuming on a Raspberry Pi, is crucial for decoding the raw data into usable imagery. The guide concludes with the initial steps for creating the `goesrecv.conf` configuration file, preparing the system for active satellite reception.

The SM1000 allows you to run FreeDV without a PC. Connect the SM1000 to your SSB radio, and you now have Digital Voice (DV). You don’t have to buy a new radio to run Digital Voice! It’s based on a STM32F4 micro-controller, has a built in microphone, speaker amplifier, speaker, and transformer isolated interfaces to your radio.

Uderstanding Single Operator two radios amateur radio contesting mode, an article by CT1BOH

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_.

The video delves into the significance of interference reduction in ham radio setups by utilizing ferrite materials. It demonstrates the use of spectrum analyzers and tracking generators to showcase the performance of ferrite devices in minimizing noise levels. The analysis includes insights on resistance levels, attenuation factors, and the impact of using multiple ferrite clamps or rings to enhance noise reduction capabilities. Viewers gain a deeper understanding of ferrite composition, characteristic curves, and winding techniques for effective noise attenuation in different frequency ranges. Overall, the video serves as a comprehensive guide to optimizing interference reduction in radio environments through the strategic use of ferrite materials.

Utilizing snap-on ferrite cores and practical insights, the author enhances their shack's cleanliness against electromagnetic interference. With meticulous experimentation and installation, they improve noise levels across HF bands, reflecting on the effectiveness of their filter in minimizing common-mode disturbances. Updates underscore ongoing refinement and cautionary advice for optimal filtering and radio reception amid changing RF environments.

Explore the detailed setup, essential software, and operational nuances for Greencube (IO-117), a Medium Earth Orbit (MEO) satellite with a 70cm digipeater, offering DX possibilities for amateur radio enthusiasts. From antenna configurations to software choices, this guide covers everything for a successful Greencube experience.

SDRangel is an Open Source Qt5 / OpenGL 3.0+ SDR and signal analyzer frontend to various hardware TX & RX Software Defined Radio. SDRangel uses sample source plugins to collect I/Q samples from a hardware device.

Ucchino is an Italian manufacturer of electronic cirucits inclunding Digiham amateur radio USB interface for digital modes, morse code oscillator, filters and RF protectors

Branch 48 NZART

These baluns are used to attenuate the common mode current that flows on the outside of the coaxial feed line.

Web site dedicated to articles relating to Ham and CB Radios and antennas, reviews and classifieds.

Ham radio club based in Fort lee NJ USA

Radio Clun Pirot

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.

Amateur radio station in Parsons TN USA

Learn how to easily improve your handheld VHF performance on the 2-meter band with the Flowerpot antenna. This simple DIY antenna made from coaxial cable requires minimal tools and materials, providing a big range upgrade compared to standard rubber-duck antennas. Discover how to build, tune, and optimize the Flowerpot antenna for excellent performance. Ideal for hams looking for lightweight, portable solutions for handhelds, mobile rigs, home stations, SOTA/POTA activations, and emergency communication.