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A Tomato Can Horn antenna for 2304 MHz by Steve Kavanagh -
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Bandplans, Beacons and many useful info on VHF operations -
Polish Callbook with search engine, QSL cards, photos and map generator. -
This is a video review of the yaesu ft-450 amateur radio transceiver. This radio operates on hf and 6m with a built in antenna tuner. -
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Home of the Richmond Amateur Radio Club, Richmond, BC, Canada -
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The TMB-1 is an RF amplifier unit / receiving accessory that can be used with a low-impedance broadband loop, a high-impedance terminated loop (such as a Pennant, Flag, or Kaz Delta), and whip (telescoping rod) antennas. -
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Hints for building a W3EDP-Antenna, includes the construction of the 1:4-balun by DK7ZB -
W9DC North America Amateur Radio checkpoint for IOTA Islands on the Air and WLH World Lighthouse award applications and award instructions; Island and lighthouse award links for international radio operator activities -
3D20CR Official website of Conway Reef DX Pedition 2009 -
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Transverters-Store is a online shop for low cost transverter boards, but also QRP transceivers, Active antennas, RF bridge and probes, Mic equalizers and other amateur radio accessories -
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The South African Radio League (SARL) serves as the national representative body for amateur radio in South Africa, holding membership in the International Amateur Radio Union (IARU). It actively promotes the hobby, coordinates national amateur radio activities, and provides essential services to its members, including advocacy for spectrum allocation and regulatory liaison with ICASA. The organization frequently publishes updates relevant to the ZS amateur community, such as "HF Update with ZS4BS" and reports on events like the "ZS6STN Field day." SARL supports various aspects of amateur radio, from contesting and DXing to technical experimentation and emergency communications. The league's website lists upcoming events and news, ensuring members stay informed about national and international amateur radio developments. Its focus encompasses all amateur bands, with recent updates highlighting HF activities. The league's digital presence, including its canonical URL _mysarl.org.za_, provides a central hub for South African hams. The site frequently updates with news, event schedules, and technical information, reflecting an active and engaged amateur radio community. -
An homebrew project for a 4 elements yagi monoband antenna for the 10 meters by 9M2MSO -
Use this online calculator to determine the length of a dipole antenna from the frequency. Both metric and English units of measurement are supported. -
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Homemade Jeep Tailgate Antenna Mount for use with a Swing Out Tire Carrier -
Largest Capacity of 200,000 MT for Towers & market leader in India with backward integrated rolling & manufacturers of Shelters, V/UHF, Patch Panel Antennas, DIAS & DWDM Equipment -
Home page about ham radio generally, but with info about APRS and Packet. -
Crossband repeat operations on the Wouxun KG-UV8D dual band multifunctional two-way radio. This demo explains differences in the cross band repeater functions of the KG-UV8D. -
This is the construction of a copper cactus style j-pole antenna. -
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A presentation of a HF multi-band sloper antenna. This antenna project is for low band operations, and antenna presented in this article works on 40 80 and 160 meters band. Article is in Polish. -
Amateur radio multi language QSO with translation in several languages. How to conduct a QSO in a foreign language including english -
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An Arduino based CW contest keyer addon, ideated and designed for the use in conbination with the K3NG Arduino keyer open-source firmware. -
Ross distributing amateur radio equipment in Preston Idaho -
Royal Belgian Union of radioamateurs Koninklijke Unie van Belgische Radio-amateus Union Royale Belge de Amateurs-?metteurs -
QST Article on what you should know about matching networks for class C RF power amplifiers -
"Shows who is ""active"" on VHF in EI, Solar Auroral and Tropo information, Vhf logs and maps." -
Manufacturer of pultruded fiberglass shapes, -
11 metres d.x. group northeast england. -
low-noise amplifier for HF reception, amplifies signals 80 to 100 times between 0.15 MHz and 30 MHz. It will let you hear more signals with your RTL-SDR plus Ham-It-Up setup -
Receive-only loop antennas have some nice response characteristics that make them ideal when used for reception of skywave signals. -
The RAGS web site filled with information about the club and its happenings, as well as other ham info in the Syracuse area NY -
Edwin H. Armstrong's foundational contributions to radio technology are presented, including the _Regenerative Circuit_ (1912), the _Superheterodyne Circuit_ (1918), the Superregenerative Circuit (1922), and the complete FM System (1933). This resource functions as a curated collection of historical documents and artifacts, many previously uncirculated, stemming largely from the _Houck Collection_. The site's purpose is to offer these primary source materials for study and enjoyment, rather than to retell Armstrong's life story, which is covered in works like Lawrence Lessing's "Man of High Fidelity" and Tom Lewis's "Empire of the Air." The collection emphasizes original documents, photographs, and equipment, all sourced from the Houck Collection unless explicitly noted otherwise. The site is structured for browsing chronologically, by selected year, or by highlight, allowing users to explore Armstrong's technical evolution. Document files are intentionally large to preserve readability and detail, while individual pages are kept concise to optimize loading times. The content provides direct insight into the technical development of radio communications. -
This program simplifies the design of the single-ended Class E amplifier. Operation is intuitive and encourages "tuning" and exploration. -
Examining the _Angle of Radiation_ and its impact on amateur radio operations, the resource provides insights into optimizing antenna performance for DX and local contacts. It features a design for SPOTTO, a direct conversion high-performance universal DSB transceiver, detailing its construction and operational characteristics for homebrew enthusiasts. Additionally, the site presents a 7-element VHF high-gain antenna design, offering practical schematics and expected performance metrics for those seeking enhanced gain on VHF bands. The resource also covers the development and popularity of the _FT8_ digital mode, highlighting its effectiveness in weak-signal conditions and its role in special event operations like the FT8DMC anniversary. It includes information on Hamfest India 2023 and the Lamakaan Amateur Radio Convention, providing dates and organizational details for significant Indian amateur radio gatherings. Technical articles on Direct Digital Synthesizers (DDS) VFOs and low-cost multifunctional frequency counters offer practical project ideas for radio amateurs. -
Schematic diagram of the VLA 200 power amplifier by RM Italy -
A Weather ATV Repeater project I am currnetly working on. -
The Meteor Scatter tips and tricks described here are based upon more than 20 years of active MS operation -
Independence FM amateur radio club -
The JSCARC, located at NASA's Johnson Space Center, Houston, Texas, supports the U.S. Space Program and the International Space Station.
