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Official Site of IZ7AUH Mr. Frank

A small amateur radio club located in northern Maine along the Saint John River.

The largest supplier of solder mask in the world

Amateur radio blog on various subjects

High Frequency Expermental Beacon "WV". The Beacon operates on the frequency of 13.55567mhz. This Beacon is very low power. It operates under Part 15 of the FCC Rules and Regulations. It transmits with only 1.5 milliwatts of power

Presents a historical timeline of amateur radio satellites, beginning with the inaugural _OSCAR 1_ in 1961 and extending through ARISSat-1 in 2011. It outlines the evolution of these orbiting transponders, initially simple battery-operated beacons, into sophisticated platforms supporting educational initiatives, emergency communications, and technology demonstrations. The document highlights the significant contributions of various AMSAT organizations and other entities in developing and deploying these spacecraft. Each entry provides specific launch details, including the date, launch vehicle, and initial orbital parameters such as apogee, perigee, and inclination. For instance, AMSAT-OSCAR 7 (AO-7) launched in 1974 into a 1459.00 x 1440.00 Km orbit, while AMSAT-OSCAR 40 (AO-40) achieved a highly elliptical 58665.00 x 1157.00 Km orbit. The resource also notes the allocated amateur satellite service frequencies, including 29 MHz (10m), 145 MHz (2m), 435 MHz (70cm), 1270 MHz (24cm), and 2400 MHz (13cm). The compilation serves as a concise reference for understanding the progression of amateur satellite technology and operations over five decades, showcasing the collaborative efforts of the global amateur radio community in space communication endeavors. It details the physical characteristics and project affiliations for many of the **20** satellites listed, providing a foundational historical context.

In this article the author analyze six different type of VHF handheld antennas and as result of his self training on his new vector network analyzer published this interesting report

A fully documented restoration project of a Hallicrafters SX99 receiver

Operating WSJT-X modes JT-65 and JT-9 on Apple Mac OSX computers

There are many many abbreviations used for words on CW, ranging from commonly used abbreviations like B4 for Before or TU for Thank You to very obscure abbreviations known only to the one using them.

N5ESE's Portable Solar Charger

A group for sharing, learning or presenting practical ideas and field experience for Ultra portable ham radio digital comm

UN Amateur Radio News, curated by Artur UN6QC, presents information relevant to Kazakh radio amateurs, including details on their account activity and participation in **WFF Kazakhstan** expeditions. The resource also documents various diplomas issued within Kazakhstan, such as those related to WFF Kazakhstan and special programs like the "50th Anniversary of the first manned space flight by Yuri Gagarin" and "The Columbus of the Cosmos" Award. It aggregates international ham radio news and maintains a calendar of international HAM competitions. The site, operational since May 14, 2010, serves as a central point for information on HAM competitions organized in Kazakhstan. It also references external resources like WWW.CQHAM.KZ for award details and WWW.EQSL.KZ for UN EQSL services. The platform aims to be a useful hub for both local and international amateur radio enthusiasts interested in Kazakh-specific operations and awards. Key events like the **UN DX Contest** and the First UN Field Day, held May 19-20, 2012, are highlighted.

Charlie's CQ Room

Makers of SkyPiRx and SkyPi-40 anateur radio kits and SDR for Raspberry Pi

Ham Radio Ireland, a diary and photos by EI2KC Anthony

The Maria Maluca HF multiband antenna as designed in 1957 by PY2BBP is a directive antenna for 15 meter and a passive element that works as director and reflector in different bands

Maker of bladeRF usb superspeed SDR Software Defined Radio

Operating pedestrian mobile by G3XBM

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

ICOM blog article on how to remotely control your ICOM transceiver using the Icom RS-BA1 Internet Protocol (IP) Remote Control Software supporting most of recent ICOM HF transceiver products

Pagina dedicada ao radioamadorismo, montagens eletronicas, projeto, faça você mesmo, vhf, uhf, satelites e muito mais

RF amplifier products from NP Technologies, Inc. encompass a wide array of specialized designs, including highly linear Class A broadband amplifiers, crucial for maintaining signal integrity across various frequencies. Their portfolio also features cell band amplifiers, specifically engineered for cellular communication infrastructure, and pulse amplifiers, which are vital in applications requiring high-power, short-duration signal bursts. The company's manufacturing capabilities extend to AM and FM broadcast amplifiers, supporting radio transmission systems, and military VHF amplifiers, designed to meet rigorous defense specifications for robust and reliable communications. NP Technologies, Inc. emphasizes comprehensive development, design, manufacturing, and testing processes for all its RF amplifier offerings. This integrated approach ensures that each product, from initial concept to final deployment, adheres to stringent performance and reliability standards. The company's expertise in these areas allows for the creation of custom solutions tailored to specific client requirements, addressing complex RF challenges in diverse operational environments. Their product range demonstrates a commitment to serving multiple sectors, including commercial broadcasting, telecommunications, and defense. The focus on specialized amplifier types underscores their technical depth in RF engineering.

Traveling Wave Tubes , Conventional Traveling Wave Tubes, Microwave Power Modules manufacturer

County Hunting ham radio operations faq

This site is about Amateur Radio Clubs in our general area. We are here to promote Ham Radio and the Clubs in South Carolina that do the same.

Comprod Communications specializes in the design and manufacturing of RF communication solutions, including a comprehensive range of antennas, duplexers, multicouplers, and combiners. The resource details their product categories, which encompass base station antennas, mobile antennas, transit antennas, and disguised antennas, alongside mounting solutions and in-building systems. It highlights the company's 40-year history in adapting offerings to client needs and anticipating industry trends, emphasizing product durability and low maintenance for harsh environments. The company's offerings are presented as high-quality, designed to withstand extreme conditions from Arctic cold to equatorial heat and humidity. The site mentions solutions and technical sales support, training, and site analysis and system design as part of their service portfolio. It also references being a market leader trusted by over 1,000 customers worldwide, positioning itself as a partner for RF communication needs.

A QRSS beacon on 30 meter band project wind and solar powered based on a loop antenna.

VHF + multi-multi contest station from EM31 in East Texas

With Varying Frequency - Amateur Radio Ponderings

Printed circuit board design for Macintosh

Kenwood TS-950SDX ESSB audio mods by voodoo labs

Single antenna with multiple polarization for diversity, diveristy receivers and propagation effects on signal polarization

DX and IOTA Calendar. Upcoming DX IOTA Expedition on DXNews.com DX calendar page

Amateur radio blog from UK

This blog is maintained as a resource for the IOMARS and other persons interested in Amateur Radio.

Article appeared on 73 amateur radio today in 1999 on how to unlock the secrets of sending precise Morse Code. Article contains hints on how use the stright key and the sideswiper key, but even the electronic keyers or the semiautomatic keys.

Official OSCAR DELTA DX Div Italy

PowerFilm, Inc. develops and manufactures thin, flexible solar modules for OEM, military and consumer needs.

US National Communications Sports Frequencies

WSJT New Software for VHF Meteor-Scatter Communication QST Article December 2001 by K1JT

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.

The Delta Amateur Radio Society promotes the hobby of Amateur Radio in the community and encourages community involvement.

SWL and amateur radio by IZ1CRR

Instructions on how to install the Yaesu DVS 6 option module into a Yaesu FTDX 3000

Can Home Solar Power and Ham Radio Coexist? It is possible, with minimal interference from the solar power system, provided you make some modifications.

Hanging Judge Hamfest, Fort Smith, AR Fort Smith Area Amateur Radio Club

K3AS.com Home Page, Discover SSTV, See K3AS SSTV CAM, Live SSTV Images Received by my Station, View My Station Equipment.

An attempt to explain why I love this strange hobby

Reducing and removing RFI Noise