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Complete instructions on tuning the Butternut HF2V on four bands, 80, 40 , 30 and 15 meters

Youtube video by PR7VX using AMTOR to test performance

Three Yagi antennas for the six meters band by 9A7PJT. Include a 4 element yagi, a custom design 4 element, and a 5 element yagi with antennas pictures and design.

4 Square K9AY Array project for 80 and 40 meters band

Multi language contest log program for 9A VHF UHF contest. Freeware for Windows

Pictures of a homemade monoband linear amplifier for 160m band powered by 3 x QB5/1750

Pictures, design plan and description of a 5 element yagi antenna for the 4 meters band by 9A7PJT

A low-band receiving antenna that can fits in a 30-foot circle

21st Century telegraphy paddles, software defined telegraphy paddles by 9A5N. Following global trends in the application of the latest technology, HAM 9a5n has made a significant technological breakthrough in the field of CW paddles

Work 19 departments of RepAblica Oriental del Uruguay

The **HamRacer** voice keyer, a Windows-based application, is showcased in this video, illustrating its utility for radio amateurs participating in SSB contests. It functions as a synthesized PC-based voice keyer, specifically designed for HF and VHF SSB contest operations, allowing operators to transmit pre-recorded or text-to-speech generated messages during rapid-fire exchanges. The demonstration includes actual recorded QSO examples from a contest, featuring contacts with stations such as SP6OWA, S57O, OK1IEI, 9A1DL, OE1PAB, OK1GTH, and 9A1E. These examples highlight the software's practical application in a live contesting environment, demonstrating how it facilitates contest participation for operators who might otherwise face challenges with traditional voice keying. The resource provides a direct look at the software in action, emphasizing its role in promoting inclusivity within the amateur radio contesting community. It details the use of Windows SAPI for speech synthesis, a core component of HamRacer's functionality.

Founded by a small group of young hams in East St. Louis, Illinois, the W9AIU Egyptian Radio Club serves as a local amateur radio organization. The club's origins trace back to meetings held in Herb Wilhelm's, W9APX, dry cleaning shop, indicating a grassroots beginning for this community group. It operates as a typical ham radio club, fostering camaraderie and likely supporting various aspects of the hobby for its members. As an amateur radio club, W9AIU likely engages in activities such as local nets, field day operations, and perhaps provides licensing support or technical discussions. Such clubs are crucial for new hams seeking mentorship and for experienced operators looking to participate in group activities like contesting or public service communications. The club's presence in Illinois suggests a focus on local and regional amateur radio initiatives.

Presents field test results for an **elevated SuperAntenna MP-1** portable antenna, configured on a tripod for HF operations. The resource details the antenna's setup and performance during a portable activation, focusing on its use across the 40-meter, 20-meter, and 17-meter amateur bands. It includes observations on signal reports and operational considerations for this specific portable antenna configuration. The content provides practical insights into deploying the MP-1 antenna in a non-ground-mounted setup, which is often a point of interest for portable and QRP operators. It documents the author's experience with the antenna's tuning and effectiveness for making contacts under real-world conditions, offering a user-perspective review of its capabilities. The article also features photographic evidence of the antenna's deployment, illustrating the tripod mounting and the overall portable station setup.

This air-powered Tennis Ball launcher is designed to launch tennis balls over trees towing fishing line.

Home of Bosnia and Herzegovina Contest Operators

Articles and review on the Yaesu FT 817 by OZ9AEC

The Islands Of Croatia Award

W9ATG Greenfield, IN

Personal blog dedicated to the world of ham radio. Ivan Palcic, Novalja, island Pag, Croatia

It is very compact, low noise and directive with an impressive 20 to 25 dB front to back

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

Repeaters: 146.970 444.475 La Crosse, Wisconsin

The Western Illinois Amateur Radio Club

In collaboration with Croatian Amateur Radio Association

9A/I2OGV, 9A/I2RFJ, 9A/I2ZBX, 9A/IZ2LSC 2010 dx pedition online log

Serving the community since 1936 through Amateur Radio. Meetings every 3rd Monday of the month.

WebSDR receiver located near Krizevci, Croatia with 0-2 MHz, 60-80 meters band and 40-49 meters band

OL5Z - contest station from JN89AR

Receiving **GOES-16** and **GOES-17** weather satellite imagery requires a specific hardware and software configuration, detailed in this practical guide. The author outlines the necessary components, including a Raspberry Pi, an RTL-SDR dongle, a suitable LNA with SAW filter for 1.69 GHz, and a parabolic grid antenna. This setup enables direct reception of high-resolution weather data, a fascinating aspect of amateur radio satellite operations. The installation process begins with preparing the Raspberry Pi, followed by updating the system and installing essential dependencies like `git`, `build-essential`, and `cmake`. A critical step involves compiling and installing `librtlsdr` from source, ensuring proper driver setup and blacklisting conflicting DVB drivers. The guide then walks through testing the RTL-SDR dongle to confirm device recognition and troubleshoot common issues like USB power or driver installation problems. Finally, the instructions cover cloning and building `goestools`, a software suite essential for processing the satellite signals. This compilation, while time-consuming on a Raspberry Pi, is crucial for decoding the raw data into usable imagery. The guide concludes with the initial steps for creating the `goesrecv.conf` configuration file, preparing the system for active satellite reception.

Alpha 87A Amplifier Fault 1 and the downlevel amplifier

The program serves to assist in a ham-radio activities secretarial with his hobby , such as Printing QSL cards or print labels directly from the program , printing envelopes and mailing envelopes for the feedback you send direct QSL cards, download address for sending cards direct from QRZ.COM or for any station. Checking whether for the QSO and his country is present QSL bureau.

This page provides detailed information on various antenna designs specifically tailored for hams operating on the 80m and 160m bands. The article covers the pourpose and usefulness of each design, helping hams optimize their radio communication capabilities on these popular bands. Whether you are a beginner looking to improve your setup or an experienced operator seeking new ideas, this page offers valuable insights to enhance your ham radio experience on the 80m and 160m frequencies.

A 50 MHz stable and small power amplifier, suitable for portable and domestic use. This RF Power amplifier delivers 900W with used pair of tubes primary installed into amplifier.

Dominica Island 2011 by DL7JAN

New IOTA activation from AF-118 Los Farallones Island July 25-30, 2019

February 2, - February 8, 2020 by Dima RA9USU, Jorge TI2JV, Andy UA3AB and Mats RM2D Chatham Bay, Isla del Coco, Costa Rica EJ65LN

Yu produces miniaturized amateur radio transceivers for portable usage. Yu designed and sold the FX-2, FX-4a, and FX-9A. Other products includes the FX-4C, an 80 m through 10 m transceiver that fits in the palm of your hand.

Search S9A Log Online DXPedition 2019 Jun 6 - 2019 Jun 18 - S9 Sao Tome & Principe

Discover the best low band receive antennas for hams with limited space. Learn about the K9AY loop antenna and Shared Apex Loop Array, two alternatives to the traditional Beverage antenna. Understand the concept of Relative Directivity Factor (RDF) and compare the performance of different receive antennas. See how the Shared Apex Loop, patented by Mark Bauman (KB7GF), offers an RDF between 8 and 10dB. Find out how to optimize antenna performance and enhance your receive capabilities on 160, 80, and 40 meters. Explore the world of low band receive antennas with insights from WB5NHL Ham Radio.

The FT-991 is a nice small size and lightweight radio, it is perfect for portable operations. It can be carried along with a laptop computer as hand luggage in airplane. The weak point of this radio, is it does not have a separate RX antenna capability. Therefore i decided to add this feature. On the back side of the radio a BNC connector is added to connect the RX antenna and a switch is fitted to select between RX antenna or main antenna.

Program for do application and endorsement for all ARRL awards-30 awards-18 for DXCC -12 for others and 8 special querry (how long I'm waiting for QSL. You can merge several awards and endorsement in a one application and upload adif file to ARRL page by ON-LINE method. Offering optimization task for cost checking QSO.Cooperating CLUBLOG

A course on fractals antennas theory provided by La Ecole nationale superieure de techniques avancees in France. Course is in French.

The Aziloop DF-72 antenna system provides 72 K9AY headings and 36 loop axes, allowing for rapid switching in 60 ms. It integrates a switchable 18 dB preamp, a 4-step attenuator (0-18 dB), and four 7-pole preselection filters to optimize receiver performance. The K9AY load is adjustable from 250 Ohm to 950 Ohm in 50 Ohm increments, offering flexibility for various receiving conditions. Control is managed via an intuitive Windows UI, supporting Local, Client, or Server modes, with headless remote operation possible through the built-in Ethernet Server. _Omni-Rig_ support facilitates auto-filter selection, PTT muting, and Rig-Sync functionality, enhancing integration with existing station setups. Designed by _GW4GTE_, the system utilizes a low visual impact, small-footprint antenna with orthogonal loops and an earth connection. It is suitable for general monitoring, co-channel station resolution, basic direction finding, and interference reduction across the VLF to HF spectrum.

This page provides instructions for unlocking additional frequency bands on your IC-7610 transceiver to access the 60m band. The step-by-step guide is useful for hams looking to expand their operating capabilities and communicate on this popular band. By following these instructions, you can ensure that your transceiver is set up correctly to operate within the regulations of the 60m band.

HamParts produces and sell remote control accessories for ham radio operators, including antenna switch controllers and stack match controllers. Remotius 64, K9AY/4-WAY Antenna Switch Controller Easy Controller series, Lora devices, and many more ham shack accessories.

Learn how to set up N1MM Logger+ software for your FT-991 transceiver. This article provides a step-by-step guide on configuring your transceiver settings to work seamlessly with the N1MM Logger+ program. By following these instructions, hams can enhance their contesting and logging experience with improved efficiency and accuracy. Whether you are a beginner or an experienced operator, this tutorial will help you optimize your FT-991 setup for contesting and general ham radio operations.

This resource presents the design and characteristics of the K9AY Terminated Loop, a compact directional receiving antenna system. The document details the antenna's physical and electrical configuration, consisting of a wire loop, a 9:1 impedance-matching transformer, and a terminating resistor. It describes how the antenna achieves directionality, favoring signals from the feed point end and rejecting signals from the terminating resistor end by several S units. The system is designed for low-band operation, specifically mentioning its application for improving reception on bands where space is a constraint. A four-direction system, utilizing two loops oriented at right angles with a relay-controlled switching system, is discussed. The resource includes a comparison of the K9AY loop's footprint to that of an equivalent EWE array, indicating the K9AY system requires approximately 1/7 the area while maintaining similar directional patterns. The design prioritizes signal collection sufficient for use with modest preamps, such as those integrated into HF transceivers. The article was originally published in QST in 1997.

Program cooperating with Logger32 and 4 QRZ servers with http method for personal data . Program is very quickly. Correct field QSL_VIA from QRZ , that you can put it on a QSL . Also show if present QSL Bureau for a country de sp9auv

The Greencube Terminal Program enhances communication with the Greencube/IO-117 satellite by enabling message exchange via a PC's soundcard and integrating with multiple loggers like ACLog and Cloudlog. It supports new contact identification through an ADIF file, featuring a color-coded "Dupelist" for tracking unconfirmed contacts and grids. The software is compatible with voice notifications for efficient satellite communication management.

The Kenwood TS-50 is a reliable 25-year-old mobile HF radio, widely used in DX operations but lacking CAT and DATA ports for modern logging or contest software. To overcome this, a custom CW interface was built using an USB to TTL module (FT232/FT232RL) and an optocoupler (e.g., 4N25, H11A1) for galvanic isolation. This setup enables the TS-50 to connect with a computer via USB, facilitating integration with software like LOGGER32 and Win-Test. The interface is cost-effective and driver-free for Windows XP and 7, making it an accessible solution for enhancing the TS-50's functionality.