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A non profit organisation run entirely by volunteers to promote Low Power Radio.

Metal products manufacturer for Grounding, cable management, surge arrestors, tower accessories, Coax standoff arms for telescoping towers, Safety stand tower platform, Mast steps, tower installation tools

OpenHamClock is a modern, open-source dashboard for amateur radio operators, designed as a web-based successor to the original HamClock. Deployable locally on a Raspberry Pi or via the cloud, it centralizes essential DX operations into a single, intuitive interface. At its core is an interactive world map that visualizes real-time DX spots, signal paths, satellite tracking, and POTA activators. The software seamlessly integrates critical tools like WSJT-X, DX Cluster, and PSKReporter for monitoring digital traffic. Additionally, it provides vital environmental data, including real-time space weather indices, solar activity, and personalized HF propagation predictions. With customizable themes and a modular architecture, OpenHamClock offers modern operators comprehensive, at-a-glance situational awareness of global radio conditions

Electronic Kits manufacturer, produce the Penntek TR-45L QRP Transceiver and the TR-25 CW Transceiver Kit

Amateur Radio Full Disclosure

Distribute Coax Cables and Connectors for VHF UHF and Microwave

A Rig control CAT interface schematic suitable for both the Yaesu FT-817 and FT-100 transceivers.

You can shorten a vertical antenna by using a loading coil. This online calculator tells you how the amout of inductance your loading coil will need to have.

How N1GY built his ride for Amateur Radio.

This is a page to detail how I remotely operate my Elecraft K2 HF transceiver via my home network. The method used should apply to pretty much any amateur transceiver that can be controlled by serial port.

Signal-to-noise ratio is defined as the ratio between the desired signal, and the background noise. In this article, SNR is explained in the deep

All about the joy of amateur radio communications

Receivers and transmitters by Collins , Drake , Hallicrafters , Hammarlund , National Receivers

This paper discusses the sources of feed line currents and the methods used to control them.

LZ Open Contest Club - free membership, event's calendar, compare logs online

Operating Free DV, the open source digital voice codec for HF, allows any SSB radio to be used for low bit rate digital voice.

HM-36 Modification to make it work with an IC-7200 and the IC-7600

The Yota 2015 official facebook group

Amateur radio station c31lj andorra 28.256 MHz

Collins Collector Clubs, Nets, Magazines & Lists

A nice article hosted on amateurradio.com on how to get started with HSMM-Mesh, the High Speed Multimedia-Mesh, from selecting a router to publishing applications

How to program the memories of the Yaesu FT-7900R without a computer

NEC models are used to explore the GR5V and ZS8BKW optimizations. A third optimization is also rediscovered. The effect of fixed lengths of 75 ohm coax are explored. A link to the NEC model is provided.

RF Coaxial Relays from stock is the answer to your urgent small quantity needs.

An overview about the UHF connectors often referred to as the PL259 plug and SO239 socket used for many RF applications. Limitations, history and soldering properly UHF Connectors

CIS Prefix Suffix (Oblast) List at KARC

An article on the restoration of a Gates Radio M-5078 Commercial HF AM transmitter by John LeVasseur, W2WDX

The website for the Northern California Amateur Radio Kids Group.

Penta Laboratories is a Manufacturer and Distributor of Vacuum Tubes, Capacitors and Electron Tubes for Broadcast, Industrial, Marine, Medical, and Avionics applications worldwide.

Operating a modern amateur radio station, particularly for advanced digital modes or microwave experiments, often requires precise test and measurement equipment. This resource from NI (National Instruments), now part of Emerson, showcases a wide array of hardware and software solutions designed for demanding test objectives. Their portfolio includes modular instruments and configurable software interfaces, such as _LabVIEW_ and _TestStand_, which integrate AI assistance via _NI Nigel™ AI_ for code completion and sequence building. For those involved in RF and microwave work, the offerings extend to vector signal transceivers, RF signal generators, software-defined radios, and spectrum analyzers. These tools are crucial for characterizing antenna performance, optimizing transceiver circuits, or developing custom radio systems. The company emphasizes its 50 years of innovation, with 40 years dedicated to _LabVIEW_, highlighting a long-standing commitment to engineering solutions. The site also details products for data acquisition, electronic test, and wireless design, covering components like CompactDAQ modules for precise sensor measurements and various communication bus interfaces. Their events and perspectives sections offer insights into topics such as 5G technology and strategies for breaking out of testing silos, providing a broader context for their measurement solutions.

Tecom industries product line encompasses a wide range of highly sensitive active and passive antennas for use in airborne and ground applications, providing complete coverage of the 20 MHz to 40 GHz frequency range.

A resource page for Kendoowd TS-850 HF transceiver

Since 1946, VK6 Weekly News has delivered weekly broadcasts to amateur radio operators across Australia, particularly in the VK6 region. The broadcasts include news updates, acknowledgments of contributors, and calls for operators to engage by transmitting news or submitting stories. This initiative strengthens community ties among amateur radio enthusiasts and encourages collaboration in maintaining the network of repeaters. The broadcasts reach various states, including Western Australia, Queensland, and New South Wales, ensuring that information is disseminated widely. VK6 Weekly News emphasizes the importance of operator contributions, thanking them for their efforts in sustaining the amateur radio community. Accessible through multiple platforms, it supports ongoing amateur radio activities and development in the region. Operators are invited to participate actively, enhancing the richness of the news content and fostering a collaborative spirit within the amateur radio community.

DX Pediton to South Georgia VP8SGI Log Online IOTA AN-007

H44G Log Online Solomon Islands Temotu Islands

Review of the popular Icom IC-2100 VHF ham radio transceiver by YB3TD

KB6NU web log

A microprocessor based interface designed to go between a standard Morse code key and a radio transmitter. The circuit receives a signal from the key, processes it, and re-transmits it to the radio.

Anderson PowerPole 15/30 Amp Connector

Building the Three-Element Hex Beam. A project and construction phase of an HF hex-Beam antenna using trees to hang the antenna and a Channel Master antenna rotator.

Online log for TX7T DX pedition from Marquesas

Project Ham: Cushcraft MA5B installation by Gary VE7AS

This DIY vertical multi-band Windom antenna offers a practical and effective solution for amateur radio enthusiasts seeking a versatile and compact antenna for HF communications. Its simplicity of construction, multi-band capability, and favorable performance make it a valuable addition to any radio shack. The article provides detailed instructions on constructing the antenna and balun, along with diagrams and component specifications. Field tests demonstrated successful contacts with stations across Europe and North America on 14, 18, and 28 MHz. The antenna exhibited comparable performance to a W3DZZ dipole and outperformed a Cobweb antenna on 18 MHz. Low noise levels were observed, effectively suppressing background noise.

Amateur radio web site of Peter Miles , VK6YSF. The purpose of this site is to promote amateur radio and also as a way to document and share the various radio activities and projects that I'm involved with.

Volunteer Amateur Radio operator organization providing emergency communications services to charitable events and in large scale disasters.

An article describing basic concepts of antenna radiation, and in particular directional antennas like Yagi antennas or Quad antennas and how they determine the direction or signals.

Printed circuit board fabrication

Schematic diagram of a two tone audio oscillator by VK3YE

Cambridgeshire England Direction Finding group

SVARA - Saginaw Valley Amateur Radio Association