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This 10 meter antenna is right out of the ARRL Antenna Book. There are 5 elements on a 24 feet boom and it performs well from 28.0 to 28.9 MHz.

Testing a Bencher YA-1 low-pass TVI filter with a spectrum analyzer with tracking generator.

Configuring dxlab commander to properly control the Icom PW-1 power amplifier

Installation and modification of the popular Butternut HF9V antenna with the optional 160 meter addon. Article includes a modification to improve the performance on the top band

Highspeed Telegraphy news, history and rankings of HST Championships

The basics of using an oscilloscope, this article is meant for thiose with very little or no experience at all with electronics or oscilloscope.

Many antennas and antenna designers neglect the true cause of loss. The major problem using short antennas is the reactance, not the length

The Camb-Hams are an informal group of Cambridgeshire Radio Hams.

How to setup the Yaesu FT-847 along to the PSTRotator under Windows 10 PC with Omnirig.

Kansas Repeaters directory

A document that will guide you on Coaxial-Cable trap optimization process to gain on global antenna performance and on increasing effective bandwidth.

DxDozer is a Windows-based amateur radio logbook designed for both new and experienced DXers, featuring a robust logging system with extensive search capabilities. It offers seamless integration with FT8, displaying received stations from WSJT-X in a DX Cluster-like view, indicating LoTW status and prior contacts, and initiating QSOs directly. The software supports an unlimited number of callsign logbooks and allows multiple operators to log simultaneously to a single database, enhancing its utility for multi-operator stations or contest operations. The application includes a sophisticated DX Cluster with highly configurable filters based on band, mode, continent, worked/confirmed status, and LoTW participation, enabling users to monitor specific calls or countries. DxDozer simplifies QSL management by facilitating one-button uploads to LoTW and ClubLog, and downloads of new confirmed QSOs, with a dedicated field for QSL medium. The software provides both 'Easy' and 'Expert' modes to cater to different user proficiency levels, and is available via a yearly subscription after an initial free trial period.

DX Pedition TX3X Chesterfield Isl. OC-176, 2015 October 1-12

Virgin Islands Amateur Radio Organization

This is a very small vertical 160m antenna that fits in the loft of even my small house. It was built as a way of getting a signal out on 160m for local AM contacts, but the local noise level was far too high to allow it to be used at night for this purpose. However, on WSPR it did a pretty good job with WSPR spots from a very long way across Europe being received when running 2.5W out.

A pocket-sized homebrew 40m CW QRPp/QRP transceiver

Experimental Methods in DSP design. The author explains how a software defined radio works to help other amateurs with their learning. This set of tutorials takes you from how to write a single component to a fully working SDR.

The Ontario QSO Party (OQP), an annual event, takes place on the third full weekend of April, specifically from 1800Z April 18 to 0300Z April 19, 2026, and 1200Z to 2000Z April 19, 2026. This **QSO party** encourages stations outside Ontario to contact as many Ontario amateur radio stations as possible, while Ontario stations work both in-province and worldwide. Key rule changes for 2026 include phone QSOs now counting equally with **CW** QSOs (2 points), the introduction of VE3RHQ as a bonus station, a 250m county line proximity definition, and a new Fixed County Line Category, alongside an adjustment of contest times. Established in 1998 by Bob Chandler VE3SRE, the OQP has been managed by Contest Club Ontario (CCO) since 2006. The event contributes to the State QSO Party Challenge, offering various award categories and maintaining records of past performance. Participants can submit activation plans, review Ontario multipliers, and access county maps. Final results and certificate winners are published, and a dedicated groups.io discussion group facilitates community interaction and support for logging software.

The Precision VXO (PVXO) and its matching Crystal Test Fixture (CTF) were created to provide a low cost means of evaluating the characteristics of crystals and a means of measuring their series resonant frequency.

For a century doing what we do best in support of the amateur radio community in Australia

10 Elements Cross-Yagi Antenna for 433 MHz. The base of the 10el antenna is the recalculated RA6FOO antenna.Circular polarization is realized - by a phasing quarter-wave line, matching of horizontal and vertical polarization antennas

Despite the model limitations, such as a single TXRX antenna connector, the author shares a reversible modification involving a coax relay for enhanced functionality, demonstrating the transceiver's adaptability and customization potential.

GridLocW is a free Lat/Long to Maidenhead converter for Windows - with optional GPS support, includes the formula to calculate geodesic distance (in m) between two points specified by latitude/longitude.

Basics, tips and tricks you can follow when operating portable.

Windows log software for the popular RD contest, usually held in Australia in mid August.

This amplifier had the full treatment, including nichrome hairpins, but they had to be removed because of parasitics or instability.

This is a great project to learn about the basics of electronics, batteries, and renewable energy. The finished project can charge a phone or tablet, light up a camp-site, and provide for whatever other small electric needs you have.

DXPedition from Zimbabwe QSL via SP5UAF

Premium Contest resort from Montenegro

GB3WB, GB7WB & GB3WE Repeaters

Livonia Amateur Radio Club

Provides a robust logging solution for amateur radio operators across multiple operating systems, QLog simplifies the process of recording contacts and managing station data. It leverages the _Qt framework_ for its graphical user interface and stores all QSO information efficiently in a local SQLite database, ensuring data integrity and accessibility. This design choice supports a streamlined user experience for daily logging activities. QLog supports essential logbook functionalities, enabling hams to accurately document their two-way radio contacts. While not specifically designed for high-speed contest operation, it serves as a reliable tool for general amateur radio logging, allowing operators to maintain detailed records of their on-air achievements and station activities. Its cross-platform compatibility, including Linux, Windows, and macOS, makes it a versatile option for a wide range of amateur radio enthusiasts seeking a free and functional logging application. The project is a fork from _7h0ma5/QLog_, indicating a continued development path.

SimpleHRR is a free ham radio remote control web application (or web app) hosted by Raspberry Pi in the ham station to remote control a ham radio HF transceiver through a supported web browser from a Desktop PC, Laptop or Android phone. Supports recent ICOM IC-7x series transceivers

A QST Article published in November 1922 is about the origin of Beverage antennas, an unidirectional antenna type that was discovered and experimented for the first time in that period. This article is the introduction to beverage antenna theory, by the homonimous autho H. H. Beverage.

TX Marquesas 2019 Nov 6 - 2019 Nov 19, 60-10m; CW SSB FT8 QSL via LoTW official web site

An article by MicroHam on using the Icom PW-1 RF Power Amplifier safely and with non-Icom transceivers.

The Utica Shelby Emergency Communication Association is a group of over 150 hams from all over the Metro-Detroit area

Manufacturer of shipping cases, custom and stock

The 2D0YLX Amateur Radio Blog, maintained by David Cain (137AT108), serves as a personal station blog from Peel in the Isle of Man, offering insights into various radio-related activities and local connections. It features content relevant to amateur radio operations, including personal experiences and observations from the island, providing a localized perspective on the hobby. The blog's primary focus is on general amateur radio topics, reflecting the author's engagement with the hobby. David Cain's blog provides a platform for sharing operational details and general interest items, often including links to other relevant sites on and around the Isle of Man. The content reflects real-world amateur radio engagement, offering practical glimpses into the daily activities of a station located in a unique geographical area. It is a resource for those interested in the personal side of amateur radio from a specific European island QTH.

Details Amphenol Connex's product range, focusing on RF connectors, adapters, and cable assemblies. The company produces common radio frequency interfaces such as _BNC_, _SMA_, and _TNC_ connectors, alongside numerous other specialized designs. These components are critical for establishing reliable signal paths in amateur radio stations, ensuring proper impedance matching and minimal signal loss across various frequency bands. The manufacturing process emphasizes precision engineering to meet the demanding specifications of RF applications, from HF to microwave frequencies. Product lines support diverse coaxial cable types, facilitating custom cable assembly for specific station configurations. The extensive catalog provides solutions for both fixed station installations and portable operations, addressing the needs of contesters, DXers, and general amateur radio operators.

Experimenting with capacitive antennas for 40 and 80 meters band. A very space-saving antenna with good receivings caracteristics

David's blog dedicated to amateur radio operations

Dealer in HF, RF and microwave components based in Italy, offering a wide product catalog for amateur radio projects and more.

MorseKOB is a program for doing landline telegraphy and American Morse with the help of a computer. Can run on Mac OS and Linux, in addition to Windows.

xCAT is an helper application for the FlexRadio 6000 series running on macOS computers to control via CAT protocol tranceivers, while xDAX purpose is to provide a way for Digital Mode Software like Fldigi, WSJT-X to access the digital audio data (DAX) of the FlexRadioTM

Documents the XR0ZR DXpedition to Juan Fernandez Island (SA-005) in November 2013, providing insights into activating a highly sought-after DXCC entity. The team's efforts focused on maximizing QSO opportunities across various bands and modes, a critical aspect for stations aiming to complete their DXCC or IOTA awards. Operating from a remote location like Juan Fernandez presents unique logistical and technical challenges, which the expedition successfully navigated to put this entity on the air for thousands of eager DXers worldwide. The resource outlines the operational period, the callsign XR0ZR, and the specific island group activated. Such DXpeditions are vital for the global amateur radio community, enabling hams in less accessible regions to achieve their award goals and fostering international communication. The detailed account serves as a historical record of a significant activation.

Mint tin transformed into a switched 9v battery to Anderson PowerPole

In this article author illustrate a homemade yagi antenna for satellite operations. The antenna includes a VHF antenna and an UHF antenna with a band splitter.

The Straits Area Amateur Radio Club (SAARC) operates a 146.68 MHz (-) repeater with a PL tone of 110.9, serving Northern Michigan for emergency communications and community support. A temporary cross-band repeater on 445.875 MHz is also available during specific hours, enhancing local coverage. The club actively supports disaster services through its repeater infrastructure and coordinates local community events. SAARC provides resources for prospective hams, including information on licensing classes and testing sessions, and promotes amateur radio education. Members and interested individuals can join the club's Groups.IO group for updates and participate in the Bill DeMay _K8GUG_ Memorial Net, held weekly on Monday evenings at 8:00 PM on the primary repeater frequency.