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Open source software designed to control and program the Japan Radio Co. NRD-545 receiver.

The Ukrainian Contest Club (UCC) The Ukrainian Amateur Radio League (UARL)

Mission is to preserve the history and enhance the knowledge of radio.

An interesting article on how to make copper cactus J-Pole antennas

Contest team 9A7A, basic info and photos about our activities

Adventure Radio, articles and reviews. This site has a whole host of ham related information.

Located about 25 miles south of Boston, MA, near the City of Brockton.

Information and news about Amateur Radio in Scotland

communication radio,CB'ers, DX'ers,photos and Qsls

W0CUO Grand Island Amatuer Radio Society. Grand Island Nebraska.

The Receiver Test Data resource is a detailed review database focusing on the performance metrics of various radio receivers. The methodology involves rigorous lab measurements, often adhering to standards such as the ARRL RMDR (Reciprocal Mixing Dynamic Range) and BDR (Blocking Dynamic Range). Specific test equipment and protocols are utilized to assess parameters like noise floor (dBm), AGC threshold (uV), and LO noise (dBc/Hz). For example, the _Icom IC-7300_ is evaluated with a noise floor of **-133 dBm** and an LO noise of **-141 dBc/Hz**, providing insights into its performance under different operational conditions. The resource includes a wide range of models, from the _Elecraft K3S_ to the _Yaesu FTdx-101D_, each tested for dynamic range, sensitivity, and selectivity. The data is sorted by key metrics such as third-order dynamic range and phase noise limitations, with RMDR values calculated by subtracting 27 dB from LO noise figures. This structured approach allows users to compare different receivers' capabilities, focusing on technical specifications and performance outcomes in various scenarios. DXZone Focus: Review Database | Lab Measurements | -133 dBm | ARRL RMDR

Quality amateur radio transformers and electrical supplies

Personal Blog devoted to ham radio topics,homebrew,antenna,satellite and other projects

Dish antenna and its theory and design for high performance applications such as satellite transmission and reception as well as microwave links. Parabolic Reflector Antenna: Dish Antenna The parabolic reflector antenna which is often called the dish antenna provides an antenna solution applicable for VHF and above where high gain and directivity are needed for all type of radio communications and radio reception.

Specialist in the design and supply of Radio Communications Equipment and Systems. West Sussex England. Antennas, traps and baluns inline isolators, Outbacker Antennas, Mobile Mounts and Accessories

Mailing List for the Distribution of Dr. Tims Pirate Radio New

VE3BDB's personal page serves as a dedicated resource for members of the Radio Amateurs of Canada (RAC) residing in the Ontario South Region. Bob Cooke, VE3BDB, previously held the position of Director for this region, offering localized support and information pertinent to the RAC's activities and initiatives within Ontario South. The page likely covered regional news, events, and specific guidance for local hams, reflecting his role in facilitating communication and engagement among the amateur radio community in that area. While the page is no longer active and Bob Cooke has transitioned from his regional director role to RAC Vice President for Field Services, its original purpose was to centralize information for Ontario South hams. The content would have been tailored to address regional concerns, promote local ham radio activities, and provide updates relevant to RAC members in that specific geographic area, directing users to the main RAC website for current information.

Personal pages on CB radio in the SE of UK and my involvment with the Tango Echo DX group

New and used books on telegraphy, key collecting, antique radio and communication-related subjects, as well as vintage telegraph instruments

Eastern washington amateur radio group

If you can program split-frequency memories in your dual-band radio, or your dual-band radio has two VFOs, you can work an FM satellite

This is the homepage of Kayalpattinam Ham Radio Society (VU2 KYP) - Ham Radio Society from Kayalpattinam, Tamilnadu, India

Ground Plane - 1/4 wave vertical, J-Pole, 3 Element Yagi Beam and simple antenna supports

Since 1935 serving amateur radio in Worcester MA

Learn how to start using ham radio satellites for your DX contacts, PDF presentation by Dave Long

Ham radio manuals in italian and english for several makers and products

The County Hunting software, version **6.1**, is designed for amateur radio operators focused on USA-CA Award tracking and logging. This application supports _Windows_ environments and facilitates the import and export of ADIF files, enhancing QSL management by integrating electronic confirmations via LoTW and e-QSL. The software has been updated to align with the new award rules managed by MARAC, following the discontinuation of CQ magazine's involvement. Users can visualize QSLs post-scanning and benefit from enhanced ADIF import functionality. Version 5.4 introduced accelerated county searches via FCC databases, with filters for QSL confirmations and e-QSL enhancements. The software also includes a feature for backing up and restoring QSOs by LoTW confirmations. Visual County tools have been refined, offering improved map interactions and the addition of county flags. The software supports various digital modes including FT8, FT4, and SSTV, and includes functionality for PSK250 and 60m bands. The application is multilingual, with support for Italian, English, French, and Spanish, and provides automated updates and web-based county searches. DXZone Focus: County Hunting | ADIF | Windows | LoTW

New York's Hall Of Science Amateur Radio Club.

Cloudlog is a web-based amateur radio logging application built with PHP and MySQL, supporting station logging activities from HF to microwave. It integrates with companion tools for CAT control and automation, offering a flexible solution for managing QSO data. The application provides a self-hosted platform for amateur radio operators to maintain their logbooks, facilitating interaction with various ham radio operations. Its open-source nature allows for community contributions and customization, enhancing its utility for diverse operating preferences. Originally started by Peter, **2E0SQL**, Cloudlog was designed to enable simple interaction with the Ham Radio Deluxe logbook using MySQL.

Radio Club Argentino

Tubes and antique radio buy and sell classified ads

6 Meter 1/4 Wave Antenna by Mike Fedler N6TWW. A detailed article with pictures of construction details of this 50 Mhz antenna

Assisting applicants in obtaining the various FCC-issued Amateur and Commercial Radio Operator licenses.

Repairing and restoring a Yaesu FL-2100Z amplifier

Software Defined Radio Projects, HF Receivers and Transceivers projects by YU1LM/QRP

We intend for this page to tell our story as well as be a resource for other "hams"

Low signal, noise-high AC gain preamplifier

Heathkit Icom Kenwood Power Transistors Ten Tec Yaesu spare Hamradio parts.

Oklahoma's Largest Amateur Radio Hamfest

Cabrillo2Adif A software for converting the radio logs from Cabrillo to Adif log format (for Mac OS X)

Amateur Radioastronomy in Poland

Exams, Club and Other Information, bullettins, classes and trainings

Over 130 years after its inception, Morse Code remains a fundamental skill for many amateur radio operators, enabling efficient QRP operations, DXing, and contesting. This resource provides an in-depth look at the **Koch Method** of Morse training, a widely adopted technique that emphasizes high-speed character recognition from the outset. It details how this method can significantly accelerate proficiency, moving beyond traditional, slower learning approaches. The site also delves into the rich history of amateur radio, presenting articles such as "Radio on the Rio," which chronicles local ham activity in Socorro, New Mexico. Another piece, "The Russian Woodpecker," recounts the Cold War-era efforts of hams to counter Soviet over-the-horizon radar interference on the HF bands. Furthermore, the resource explores the fascinating intersection of ham radio and radio astronomy, highlighting the direct lineage between amateur experimentation and the development of modern radio telescopes like the **Very Large Array (VLA)**. It also includes an introduction to the 6-meter band, often called "The Magic Band," detailing its unique propagation characteristics and suitability for no-code licensees seeking long-distance contacts.

PalmProp is a software for PalmOs dedicated to the forcast of HF radiowave propagation by f5hla

The Findlay Radio Club was incorporated as a non-profit organization in the State of Ohio on June 9, 1956.

FREE ham radio newsletter The K9YA Telegraph is in full-color and delivered to your computer each month as a PDF.

Resources for amateur radio astronomers, teachers, and students.

The California Polytechnic State University Amateur (Ham) Radio Club (CPARC) has a long tradition of communications service on campus and in the community of San Luis Obispo. The club was founded in 1947, making the Cal Poly Amateur Radio Club the second oldest club on campus

Amateur Radio operators, volunteers for Emergency Service, in Portland, Oregon, and other suburban cities and towns in Multnomah County