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In this experiment the autor is going to explore the use of a 1:64 matching network on the End Fed Long Wire Antenna. Experiment will consist in build a 80-40-20-15-10 meter End Fed Long Wire Antenna with a 1:64 matching network from the documentation available on the internet

The HF horizontal loop has been around for many years now. This article includes a YouTube video and discusses the reasons for looking at this antenna, its design, and its installation. There are some on-air comparisons against three regular double bazooka (coax) dipoles and the Par SWL End-Fed antenna.

The club was formed at a meeting of a group of hams on a May 1989 afternoon at Jake's Truck Stop in Bend.

RACOM is a Czech company specialized in design and production of radio modems and other devices for wireless data networks for radio channels from 140 to 900 MHz. RACOM radio data networks are suitable for data transfer in telemetry & SCADA applications, transaction networks, security systems, IP networks and firts of all mobile tracking and fleet management.

The antenna consists of 6 runs of stranded wires spaced by plastic Hula Hoop spacers made of poly tubing

Benelec Pty Ltd specializes in the design and manufacturing of **antennas** and RF components, covering a broad frequency range from 0.002 GHz to 8 GHz. Their product line includes Land Mobile Radio Antennas, such as HF 2-30MHz, VHF 40-180MHz, and UHF 200-520MHz models, alongside specialized Military Antennas for dismounted, UxS, C2, and EW applications. The company also produces Cellular Antennas, including 4G/5G and GPS/GNSS types, and Marine Antennas for both vessel-mounted and fixed-site installations. Additionally, Benelec offers a comprehensive range of coaxial cables, connectors like N-Type and SMA, and various radio accessories. The company's offerings extend to RF components such as duplexers, diplexers, and 50 Ohm loads, as well as DAS components like directional couplers and hybrid combiners. Benelec provides EMP and lightning protection solutions, including 1/4 Wave Stub protectors and replaceable GAS capsules. Their product catalog also features P25, DMR, and FM Analog radios, along with portable and mobile radio accessories like batteries, chargers, and cabled headsets. The company supports various sectors with robust communication solutions.

International crystal manufacturing provides quartz crystals, oscillators, precision crystals, filters, tcxos / vctcxos, qcm crystals, and other frequency control products. read details about our crystals and frequency control products and services.

Millimeterwave/Microwave transmission lines and components, Cryogenic temperature application transmission cables and systems, Permittivity(Dielectric rate) and Permeabillity measurement systems, Antennas, Radar systems

A shortened multiband dipole antenna by PA0FRI in Dutch

Boom Microphone Headsets for use on amateur transceivers- assembled and kit form.

A small Z-Match tuner, BLT, Balanced Line Tuner is a simple Z-Match tuner that works from 10-40 meters

This resource, originally intended to detail the technical specifications of the **Clover** digital communications mode, currently presents a "Page not found" error. The _Clover_ mode was designed for conveying 8-bit digital data over narrow-band high-frequency radio channels, offering robust performance under challenging propagation conditions. Its design focused on efficient data transfer and error correction, making it suitable for amateur radio operators seeking reliable digital links. The absence of the page prevents analysis of specific technical parameters, such as modulation schemes, data rates, or error correction codes that would have been presented. Historically, Clover offered significant advantages in throughput and reliability compared to earlier digital modes over HF, often achieving higher effective data rates than modes like PACTOR or AMTOR under similar signal-to-noise ratios. Without the content, a direct comparison of its performance metrics or practical application scenarios is not possible.

Homebrew Solar Panel 60Watts. Building a homemade solar panel from solar cells that would have otherwise been thrown out.

This page is about the RSGB's Propagation Studies Committee, its work, services and current projects, together with guides to where to find more about matters relating to propagation on the Internet at all levels from introductory to professional. Watch this space!

The Providence Radio Association Incorporated, one of the oldest radio associations in the world.

VK3OT audio recorder qsos.

PIC micro controller based frequency counter with LCD readout

The North East Weak Signal Group (N.E.W.S.) website serves as the digital hub for an ARRL-affiliated regional club dedicated to _weak signal_ work across the VHF, UHF, and SHF spectrum, from 50 MHz up to light. It provides essential information for members and prospective enthusiasts, including the club's constitution and by-laws, details on officers and the board of directors, and a calendar of meetings and events. The site also features an application for membership, information on dues, and a membership roster, fostering a sense of community among its over 100 members. A significant feature of the site is its extensive archive of conference papers, including proceedings from the _Eastern VHF/UHF/Microwave Conference_ dating back to 2009. These papers cover a wide array of technical topics relevant to weak signal operations. The site also lists _50 MHz Beacons_ and _144 MHz and up Beacons_, along with links to other VHF and above resources, providing practical tools and knowledge for operators interested in pushing the boundaries of amateur radio communication.

This article includes an online calculator for a 3 element Yagi Antenna. The formula and basics theory of Yagi Antenna are also explained with examples.

K6ODV Six Meter KW Amplifier Designs

Thierry LOMBRY, ON4SKY, gives advice to amateurs about lightning protection of an hamshack, including pictures and links.

Frequency counter project. It includes quite a number of useful testing features which were very useful when building other projects

Wheaton Community Radio Amateurs (WCRA - W9CCu), Wheaton, Illinois

ABC Vacuum Tubes is dedicated to providing Ham radio, amateur radio operators, antique radio enthusiasts, audio professionals and hobbyists the ability to choose from an inventory of over 3.5 Million Vacuum Tubes on hand under one roof.

The main function of the Ugly Balun is to help eliminate rf currents from flowing on the outside of coaxial cable using the principle of choke action.

Pneumatic Antenna Deployment Systems

A lightweight ham radio antenna for Summits On The Air (SOTA) that deploys easily and is highly compact.

Anderson Power Products specializes in high-current interconnect solutions, featuring products like the _Industrial Battery Connector_ (IBC) DIN-style connector for advanced battery charging applications. Their product line includes the SBS®XPRO connector, designed with three power contacts and eight signaling contacts, suitable for battery-powered equipment in harsh environments. The new Saf-D-Grid® Max connector supports up to **55A** and 600V, providing high power density in a C19 footprint, and is UL-rated for disconnect up to **40A**. They also offer IP68-rated SBS®X-75A connectors, engineered for waterproof high power and signal transmission. The company provides pre-crimped cable assemblies, simplifying proper contact maintenance between cables and connectors. Anderson Power Products serves diverse sectors including material handling, electric vehicles, telecom, office equipment, and power management, emphasizing reliable and rugged connector designs. Technical documentation and a comprehensive power connector catalog are available for detailed product specifications.

Showcasing a range of Morse code paddles, UR5CDX emphasizes craftsmanship in both dual and single paddle designs. Each key is engineered for optimal performance, catering to the needs of CW operators. The paddles are not just tools; they reflect the artistry of ham radio equipment. With options for personalization, including illuminated tags, operators can enhance their shacks with unique identifiers. The commitment to quality is evident in the materials used and the precision of the mechanics, ensuring reliable operation during contests or casual QSOs. UR5CDX also engages with the community, sharing insights on the manufacturing process and the impact of current events on production timelines. This connection fosters a sense of camaraderie among operators who appreciate the nuances of Morse code communication.

Located in Wynne Arkansas. Repeater 147.375(107.2he Cross County Amateur Radio Club is an ARRL Affiliated Special Services Club. The Club is located in North East Arkansas and is based in Wynne Arkansas which is the County seat for Cross. With members from Cross County and surrounding Counties and communities in Eastern Arkansas the club works to serve our communities as well as the Amateur Radio Community.

Installing and operating amateur radio station in OTR (Over The Road) trucks, and an RVs (Recreational Vehicles) by K0BG

Europeam SWL BCL Clubs organization

Installing the optional TCXO, named SO-3 in the Kenwood TS-590S by TK5EP

Performance chart of VHF antennas in a stacked array

Quality repair of Kenwood and Some Icom equipment

The Speaky HF SSB transceiver and other homebrew projects Homebrew of radio equipment, antennas, tuner, etc.

Search K1N On-Line log

This is a page designed to help the EMCOMM operator thinking of going portable. It will describe a way of having VHF UHF HF voice and digital in one box

Link page to all kinds off amateurradio related sites

Review of LDG Z-11 Pro Antenna Tuner

The NG7M Web Cluster, maintained by W7CT and NG7M, offers real-time DX spotting information crucial for amateur radio operators engaged in DXing and contesting activities. This service aggregates DX spots from various sources, presenting them in a user-friendly format accessible via both web interface and traditional telnet protocols. Operators can monitor band conditions, identify rare DX entities, and track propagation paths across multiple amateur radio bands. This cluster supports a wide range of operating modes and bands, facilitating efficient station operation for both casual DX chasers and serious contesters. The system integrates data from the Reverse Beacon Network (RBN) and PSK Reporter, enhancing its utility by providing automated CW and digital mode spots alongside manually entered voice spots. Access methods include a direct web interface for graphical display and a telnet connection for command-line interaction, catering to different operational preferences. The cluster's data stream is continuously updated, ensuring timely information for making critical operating decisions.

Everything you need to know to understand and use PSK-31 by George Rothbart, KF6VSG Presentation to PACIFICON 2001

Computer Control and Soundcard Interface for the Icom IC 706

Dipole, inverted V, full wave loop and grond plane antenna quick reference plans

T-Match Network Antenna Tuner for a wide range of complex antenna loads between 1.8 and 30Mhz at moderate power levels by VK6YSF

Specifications, images and product reviews for the yaesu ft-450 (at) mobile amateur transceiver

KA7OEI article on homebrewing Yagi UDA antennas with practical suggestions and designing notes.

TS-570 series specifications at universalradio

Magnetic Loop Antennas for The Radio Operator with Limited Space, a two part series of articles on how to construct a magnetic loop antenna, including directions on selecting high voltage tuning capacitor

Sporadic-E clouds location and estimated MUF real time map by DXMAPS