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Houston Ham Radio Club BVARC is an amateur club located in the southwest Houston Texas area

Hall County ARES - The Hall County Amateur Radio Emergency Service has been organized to aid the public of Hall County and surrounding communities.

Showcasing innovative RF solutions, Hofi Hochfrequenztechnik manufactures high-quality _antennas_ and RF switches. Their products, including the **versatower** and **fritzel** brands, cater to both casual operators and serious DXers. With a commitment to performance, Hofi's offerings enable operators to achieve optimal signal gain and reliability in various conditions. The company's expertise in antenna design ensures that users can effectively communicate across _HF_ bands, enhancing their overall operating experience. Whether setting up a new station or upgrading existing equipment, Hofi provides essential tools for successful ham radio operations.

The Kentucky Contest Group (KCG) website, maintained by N4GN, serves as a hub for amateur radio operators interested in **radiosport** contesting within Kentucky and southern Indiana. It details the group's dedication to promoting contesting, offers links to KCG officers, membership rosters, and upcoming meetings, and provides access to an active KCG e-mail reflector and Facebook Group for member communication. The site also features a comprehensive list of N4GN's recommended ham radio web picks, covering various categories like contesting resources, DXing, VHF/UHF/Microwave, and propagation information. The KCG's map center coordinates were updated on May 16, 2015, shifting approximately 16.5 miles SSW to 37° 21' N, 85° 39' W. Despite acknowledging current inactivity and an outdated web presence, the group remains operational, exploring options for reorganization, including a potential merger with the Tennessee Contest Group (TCG), which was ultimately rejected. The site emphasizes that membership applications are considered from anyone with a genuine interest in contesting.

QRPGuys is an organization of hams that offers budget and unique ham radio kits.

Monitoring extremely weak signals in the QRSS (Very Slow Morse) mode requires specialized receiving and processing capabilities to extract information below the typical noise floor. This project provides a software solution, _QrssPiG_, designed to run on a Raspberry Pi, enabling it to function as a dedicated QRSS grabber. It interfaces with various Software Defined Radio (SDR) devices, including the popular _rtl-sdr_ dongles and _HackRF_ units, to acquire raw I/Q data streams. The software then performs the necessary signal processing to visualize and decode these faint, long-duration CW transmissions, often operating with milliwatts of power. The system leverages the computational power of the Raspberry Pi for real-time signal analysis, allowing hams to participate in QRSS experiments and monitor distant beacons. It supports different SDR hardware, offering flexibility in setup and deployment for home stations or remote monitoring sites. The project includes detailed instructions for installation and configuration, making it accessible for those familiar with Linux environments. This grabber is particularly useful for tracking propagation on the LF and HF bands where QRSS activity is common, providing a visual representation of signal presence over extended periods.

UK based CB Radio, Ham Radio, PMR Radio web forum

With the new name TRANSRADIO, the former TELEFUNKEN SenderSysteme AG enters into the new digital age of Broadcasting – DRM.

My blog is general info regarding HAM radio hobby and collection of my QSL cards

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

XieGu Tech manufactures quality amateur radio transceivers and amplifiers designed by BG8HT. Xiegu focus is portable and self contained transceivers perfect for your next SOTA, hiking trip or travel experience.

A very compact and multifunctional digital amateur radio station for the radio operation at home, on the way or in the emergency radio implemented with a Raspberry Pi 4, an Elecraft KX2, a Kenwood TH-D74 and a USB GPS.

This software is an amateur radio utility for the lookup of an FCC issued Amateur Radio Call Sign. Run on Windows Linux and MacOSX

How to limit unwanted harmonics from your raspberry Pi radio transmitter by introducing filters.

SZ2PRO - Exemplary Radio-amateur Club Greece

Dundalk Amateur Radio Society. Ireland Calsigns EI7DAR EI0W

Thoughts build a solid state legal-limit amplifier for amateur radio use.

Southern Oklahoma Amateur Radio Emergency Service and Scientific Society. We are a diverse group, with a history of community service to the southern Oklahoma region

A 70 MHz Transverter project with a block diagram and schematics

Ukrainian Amateur Radio League official web site of the Ukrainian Ham Radio League

Oakland county amateur radio society

Summits on the air, sota. an exciting new award scheme for radio amateurs. the scheme encourages lightweight portable ham radio operating in mountainous and wilderness areas areas.

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.

Amateur radio, Technology, Towers, Land, Wilderness, real estate, Visalia DX Convention Report #1 Flexradio Antennas Dxpedition, Elecraft introduces K3, here are pictures of the radio from the outside and inside from the Visalia DX Convention

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.

The elgin amateur radio society Illinois

Pine Valley Repeater Amateur Radio Club Richland County ARES/RACES Serving Richland County with Sky warn Storm spotters and communications were needed. Working with Emergency Management and other emergency services.

Artwork Created in Verve by Michael A. Maynard K4ICY includes some nice amateur radio related paints

This is the website of The Palestine/Anderson County Amateur Radio Club of Palestine, Texas

RARA was founded in 1995 by a group of active amateur radio operators from several regions of the United States. Today, the club is international in scope with over 135 members around the world.

The Nanaimo Amateur Radio Association is made up of members of the community stretching from Courtenay to Duncan on Vancouver Island.

the Watertown Amateur Radio Club located in Watertown, Wisconsin.

The West Chester Amateur Radio Association (WCARA), operating under the callsign WC8VOA, functions as a division of the _National Voice of America Museum of Broadcasting_. This organization actively promotes amateur radio, providing essential facilities for members and guests to convene and exchange technical information about the hobby. The club's primary focus includes fostering community engagement and sharing operational knowledge among enthusiasts. WC8VOA maintains a dedicated ham shack, facilitating on-air operations and technical discussions. Members utilize these resources for various amateur radio activities, including contesting and DXing, contributing to a vibrant local radio scene. The association's commitment to education and hands-on experience strengthens the amateur radio presence in the West Chester area, supporting both new licensees and seasoned operators.

Developing operational amateur radio equipment for the 134 GHz band presents significant technical challenges, particularly in frequency generation and stability. This resource details the construction of a 134 GHz system, outlining its architecture with separate transmit (Tx) and receive (Rx) modules, each employing a local oscillator (LO) and RF head units. The system utilizes a dual Flann 50 GHz lens-type horn antenna configuration for optimal signal coupling. The transmit path incorporates an LMX2541 synthesizer chip operating at approximately 2.8 GHz, referenced by a 10 MHz double-oven Morion OCXO for exceptional stability. This signal is multiplied through a series of stages (X4, then X2) to generate a 22.4 GHz signal, which subsequently drives a dual series diode multiplier to produce the final X6 signal for 134 GHz operation. The receive side features an anti-parallel diode mixer coupled to a 144 MHz transceiver via a preamplifier, ensuring effective downconversion. Operational mode is CW, achieved by keying a multiplier stage. The project includes images of the Tx and Rx head units and describes a successful 3.5 km test with G8ACE, demonstrating stable signal tones due to PLLs locked to OCXOs at both ends, confirming the system's robust performance.

Amplitude Modulation Forever for ham radio operators, shortwave listeners and collectors

The Big Dog contest club is a group of amateur radio enthusiasts who enjoy the fine arts of radio contesting and consuming fine foods but not necessarily in that order!

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

Miscellaneous ham radio stuff from K2DBK

Provides this Web site as a public service to all radio amateurs within the city of Huber Heights and the Miami Valley of Ohio.

How N1GY built his ride for Amateur Radio.

We an an Amateur Radio Club in North Central Pa.

Are you confused when it comes to using toroids? The tips given in this article may simplify your next project. Comprehensive article about choosing the proper toroid.

Clay County Missouri

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

Greek Lighthouse Award has been instituted by the Northern Greece Contest Team and will be issued to any Ham Radio operator or SWL for QSOs with (or reports from) amateur radio stations operating from Greek's lighthouses.