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The No-Nonsense Technician-Class License Study Guide for tests given between July 2014 and June 2018, download the free PDF by KB6NU

Operating pedestrian mobile by G3XBM

The details of the spark gap transmitter and its history: how it was invented, developed and used.

Christians of Idaho Amateur Radio Club, Inc.

Colombian Amateur radio DX Group

Amateur radio blog from UK

Cmpter Electronics specializes in the design and manufacturing of RF coaxial connectors, RF adapters, and RF cable assemblies, serving diverse applications across datacom/telecom, automotive, instrumentation, aerospace, and defense sectors. Their product line includes RF coaxial terminations, attenuators, and waveguide to coax adapters, catering to specific needs in radio frequency systems. The company also offers precision adapters and connectors, alongside glass beads and test cable assemblies, indicating a focus on high-quality components for demanding RF environments. Their resource center provides valuable information, including an "RF Made Simple" section and a product catalog for download, which assists engineers and technicians in selecting appropriate components. The product named system helps in identifying specific parts, streamlining the procurement process for complex RF solutions. With a comprehensive range of RF coaxial cables and related tools, Cmpter Electronics positions itself as a key supplier for critical infrastructure requiring reliable signal integrity. Their offerings support a broad spectrum of RF applications, from basic connectivity to advanced test setups.

An Google Maps interactive layer showing Australian amateur radio repeaters. You can navigate and zoom as required and click on a repeater-site icon to display frequency, ctcss and other details and notes for that repeater.

All the essentials about the Dip Meter or Grid Dip Oscillator used for many RF measurements including detecting resonance, locating RF emissions, and making many RF measurements.

STAR-H Corporation specializes in extremely wideband dipoles and compact low-profile antenna systems for military, emergency management, commercial operations and consumer wireless applications.

Federation of Romanian radio amateurs

ELENOS is the leader company for fm transmitters, amplifiers, radio broadcast equipment and custom systems.

Dealer for Russian Tubes, components and other semiconductors

New Club Site For Maidstone YMCA ARS

This project is a USB Audio, Serial and PTT interface for rigs that does not directly support digital modes provided by applications such as FLDIGI, WSJT-X and JS8CALL. Plug these interface devices into your Windows or Linux laptop or Raspbian Raspberry Pi and you can send and receive digital tones to/from your rig and automate the frequency and mode control and PTT control.

Use your Smartphone as an Oscilloscope to visialize signals from 150 Hz to 15kHz and as a Signal Generator to generate sinusoidal, square and triangular signals up to 15kHz

Franklin, Indiana

The IK7IMP personal page provides details on the _Ham Portal_ software, an Italian-language application designed for managing amateur radio websites, including an online logbook feature. The resource also mentions the development of a J-pole antenna project, indicating a focus on practical radio construction and design. Content on the site covers general amateur radio topics, with specific mentions of equipment from manufacturers like Yaesu, Icom, and Kenwood, alongside antenna brands such as KLM and Tonna. The page serves as a hub for Icilio Carlino's amateur radio activities, offering insights into his interests in DXing, contesting (CW), and general radio operation. It also includes information relevant to the local amateur radio community in Lecce and Salento, Italy, referencing the Associazione Italiana Radioamatori (ARI) and the IQ7AF project.

Contest Club Ontario (CCO) is Ontario's entry into International Club competitions in the 21st Century, providing one vehicle to highlight Canadian participation in these contests.

Virgo is originally designed to serve for meteorscatter propagation purposes in amateur radio. Maintained by Bastian, DB1BM, and Alexander, DL8AAU. Virgo is a projection of the sky visible at your location. Different to other astronomical sky views, there are no stars displayed, but the radiants of current meteor showers.

Personal page from Russian amateur radio station RW3FX

Russian contest club station RW4LYL with impressive antenna farm

Turkish bulgarian contest team

Ham radio blog from west malaysian station 9W2MSG

Approximately 524,475 Brazilian amateur radio operators are cataloged within this resource, offering a comprehensive database for the South American region. Each entry includes geographical coordinates, enabling users to visualize station locations directly within Google Earth. This functionality supports DXers in identifying potential contacts and understanding propagation paths relative to specific Brazilian QTHs. The platform serves as a digital callbook, primarily focused on the Brazilian amateur radio community. It facilitates the lookup of callsigns and associated location data, which is crucial for award tracking, contest planning, and general operational awareness. The integration with mapping services provides a visual dimension to traditional callsign databases, enhancing the utility for operators interested in geographical aspects of radio communication.

Daki Funkversand is a German based web shop for Amateur- & CB-Radio equipment. Our shop includes products such as radios, antennas, equipment, PMR, LPD & Freenet.

Fast Scan Amateur Television in Alabama, Arizona, Northern California Southern California, Georga, Illinois, Indiana, Kentucky, New Mexico, Nevada, Texas, Washington, Delaware, Maryland, New Jersey, and Pennsylvania.

The interactive Smith chart enables users to navigate their way around a Smith chart, using simple discrete element impedance matching. This page allows users to try using the Smith chart, for education and interest purposes, without installing any software. Try changing the value in the load box to see the location of the impedance on the chart.

The Japan Amateur Radio League (JARL) is cautiously watching new developments concerning the commercialization of Power Line Communications (PLC), while continuing to carry out joint experiments with a high speed power line communication promoters' alliance to reduce potential interference to radio communications.

Italian ham radio dealer for major brands like Icom Kenwood Yaesu HY-GAIN Heil Sound Rigexpert Palstar GAP antennas Diamond SteppIR and others

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.

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

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

Electronic components online shop in German and Italian

Past and current operations dedicated to St. Maximilian Maria Kolbe (SP3RN)

The Australian Ladies Amateur Radio Association (ALARA) was formed in 1975 with a mission to encourage women's interest and active participation in amateur radio.

Amateur Radio Operator since April of 2005. My time as a Technician was primarily spent working for the community and various organizations to provide Emergency Communications. I originally became a ham to work DX but found enjoyment volunteering for the local community.

SACCW SACSSB Contest info and rules

A modified Hairpin antenna for a wider bandwidth an mounted on a grounded metalic mast

Mike Delta Victor Dx Group Spain

Lithuania

Visual Wais is a free HAM (Amateur Radio) software to manage WAIS (Worked All Italian Squares) award. With few clicks, it allows the complete award management, from QSO insertion to endorsement requests.

Lighthouse list, dx peditions, pictures and awards issued

Personal webpage of AE7XQ with information for those starting out in amateur radio and those who are interested in CW and QRP.

The radio-amatori.it forum provides a platform for Italian radio amateurs to discuss various topics. The forum's content includes general interest discussions relevant to the amateur radio community in Italy. This resource facilitates interaction among hams, allowing for the exchange of information and experiences within a regional context. Currently, the domain radio-amatori.it is listed for sale, indicating a potential change in ownership or operational status. This situation suggests the forum's long-term availability or content stability may be uncertain.

While the Sunraysia Radio Group website is no longer actively maintained, it provides a glimpse into the amateur radio community in the Sunraysia, Mallee, and Tri-State areas of Australia. The site acknowledges that its content may be outdated, directing visitors to external links for current information. This resource acts primarily as a historical record, reflecting past activities and affiliations rather than a live, dynamic hub. It references various resources previously available to local hams, including web and social media pages, though these external links would need independent verification for current status. The site's primary value now lies in documenting the existence and focus of a regional amateur radio organization. Operators interested in the history of Australian amateur radio clubs or regional group structures might find the site's archived nature informative, despite the lack of contemporary updates.

Sponsored by the Scandinavian Amateur Radio Teleprinter Group

The premier flea market for radio, electronics, Computer & communications equipment in Indianapolis

MikroTik is a Latvian company which founded in 1995 to develop routers and wireless ISP systems. Wifi Routers, router boards, switches, interfaces and enclosures.