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ARRL Hamfests and conventions calendar

This is the Loop Antenna Group to Ask Your Questions, Get Answers and Information about Loop Antennas for improved your Radio Listening and Enjoyment.

Multi-band loft-mounted dipoles for 40, 20, 17, 15, and 10m

VectorFox is a software born to incorporate a PC into the fox hunting environment. VectorFox is able to take inputs from up to 5 sources, such as a 2m beam, a 2m signal meter, a TDOA, etc, and display the results on the screen. VectorFox also accepts Agrelo inputs. From these results the operator can choose which indication is best and have a line drawn on the map in the direction of the signal.

Issue 35, October 1992 Six News

Canadian dealer, specializes in supply and installation of free-standing towers for commercial and amateur radio use. We also supply ham transceivers, antennas, rotors and accessories.

The Fence Fan Dipole a quick, easy and inexpensive multiband dipole antenna

Here you will find all kinds of information, PCB layouts, hints and kinks and case histories of some of the most popular Heathkit ham gear.

Lot of useful information on experiments on 136 Khz band, with antenna tips DSP infos and notes on their activity in LF.

Your source for weather radios, communication headsets, 14 channel radios, M&M groovy radios, smithsonian crystal radio and weather station kits, line restrictors, antennas,ham radio accessories, and battery products.

Comparison of 50 and 70 Mhz antennas, commercial and home made projects

This Artificial Ground has been designed by Colyn Baillie-Searle GD4EIRP

A Slinky-based doublet or loaded vertical QRP antenna tested for 40 meters band

A homebrew Magmount for 2m antenna

Iphone app for ncdxf IARU beacon monitoring, shows the currently transmitting beacon on each band, reception charts from the active monitoring stations, and latest solar flux A and K indices

Controlling amateur radio transceivers remotely often requires dedicated software to interface with the radio's CAT (Computer Aided Transceiver) system. CATSPAW is a software utility specifically developed by N2OHZ for the Yaesu FT-100, facilitating computer-based control over various radio functions. The software provides an interface for adjusting parameters such as frequency, mode, and other operational settings, which can be particularly useful for remote station operation or automated tasks. While the specific features and user interface details are not extensively documented on the download page, the primary function centers on providing a digital control layer for the _FT-100_. This allows operators to integrate the transceiver into a larger station setup that might include logging programs or digital mode applications, enhancing the overall operational flexibility. The utility's design focuses on direct control, leveraging the radio's internal command set. As a downloadable executable, _CATSPAW_ represents a common approach to radio control software from its era, offering a direct link between a personal computer and a specific transceiver model.

Amateur radio in Iceland, Ham radio in Iceland, information about Amateur Radio in Iceland

Alk engineering - filter design software and consulting

This page describes a fix to the Low Pass Filter that provides more filtering of the second harmonic of 144-148 MHz.

This antenna analyzer measures complex impedance over the 1.6 - 33 MHz HF spectrum

Pneumatic Antenna Launchers for sale

Interesting article on multiband fan dipoles. This article give an overview on designing this wire antenna, and planning a robust installation and proper feed line. Includes notes on setting up a commercial fan dipole antenna and on how diy your own.

The charts on this page depict the progression of the Solar Cycle. The charts and tables are updated by the Space Weather Prediction Center monthly using the latest ISES predictions

Online database: downloadable database, updated monthly. In norwegian.

FreqTweak is a tool for FFT-based realtime audio spectral manipulation and display for Linux, offering various algorithms for audio processing in the frequency domain and an interactive GUI. It provides high-resolution spectral displays like scrolling-raster spectrograms and energy vs frequency plots.

Collection of telegraph keys homebrew antenna projects links to radio software

A Smith charting program. You can enter either discrete components or transmission lines, see the results on screen and/or generate Postscript output. Component values can be changed numerically or using scrollbars.

High Voltage Dummy Load 3000 OHMS, 5400 WATTS There are 45 layers of 6 resistors, each one being 400 OHMS @ 20 Watts for a total of 270 resistors

D-PRS Interface is written to provide a universal interface between APRS clients and an Icom D-STAR enabled radio with a low speed port.

Provides a robust contest logging solution for Windows users, supporting over **500** distinct amateur radio contests. The software integrates _digital modes_ and offers comprehensive logging features essential for competitive operating. It facilitates efficient entry, real-time scoring, and post-contest log submission in standard formats. Developed and maintained by K1LZ and a dedicated team, DXLog.net is provided free of charge to the amateur radio community. Users can access support and report bugs via the dedicated groups.io forum, ensuring ongoing development and user assistance. The platform includes detailed release notes and an archive of support information, aiding operators in maximizing their contest performance.

Italian shop offer a wide range of products for industrial or military surplus.

Shortwave frequency list and swl links

This article explores the performance of an unloaded elevated vertical, base matching and feed line as a multi-band HF antenna system.

An 80 meter band vertical loop antenna setup

Arduino Band decoder project available in KIT

Ham radio magazine intended for the serious VHF and up operator. Published in Germany, but fully bilingual.

Yaesu VX-2R mini review in spanish. Watch a VX-2 in action video by YouTube

Website for Amateur Radio Companion reference CD-ROM.

Part 2 You're now much closer to saying goodbye to your unwanted signal problems!

This page documents how KR7RK built a Go-Box portable amateur radio station

Understanding and solving RF interference problems using ferrite

Free programming software for various of the MicroChip PIC series of micro-controllers by Nigel Goodwin

A Useful Horizontally Polarised Omni-directional Antenna with Gain for 144 MHz

DIY voice keyer for your next ham radio contest. An interesting homebew voice keyer project by ON7EQ

60KHz to 60MHz. laboratory quality Vector Network Analyzer project

1000 feet of open wire line

UR5FCM Log provides a centralized logging solution for amateur radio operators, designed to manage daily radio communications and integrate various digital modes. This software functions as a primary working center for a radio station, facilitating the recording and management of QSOs across different operating aspects. Since version 1.1.61, UR5FCM Log has incorporated enhanced features for digital mode operations, specifically supporting RTTY, BPSK, and SSTV. The application aims to streamline the logging process, offering tools for QSL management and general station record-keeping. It is developed for the Windows operating system, providing a graphical user interface for ease of use. The software includes capabilities for tracking various contact details and supports common amateur radio data formats for log exchange. Its development history spans from 2002 to 2005, with Igor I. Krinetsky credited as the author.

Mailing list post about Yaesu ft-100 knobs

Operating on the amateur radio bands, DXers rely on timely information to chase rare contacts. This resource offers a specialized web interface for accessing DX cluster data, specifically designed for mobile phone displays. It presents real-time **DX spots** in a compact, easy-to-read format, stripping away extraneous elements often found on traditional cluster interfaces. The core functionality focuses on delivering essential spotting information—callsign, frequency, mode, and comments—without requiring complex navigation or excessive data loading, which is crucial for mobile data usage. The utility of this mobile-first design becomes apparent when operating portable or away from a shack. Unlike full-featured _telnet clusters_ or web-based aggregators, DXLite prioritizes quick access and readability on small screens. The interface displays a continuous stream of spots, allowing operators to rapidly identify potential DX opportunities across various bands. Its minimalist approach ensures fast loading times and efficient data consumption, making it a practical tool for on-the-go DXing and contesting.

An easy to deploy antenna, commonly considered the best solution for portable operations. Thir article includes a simple LC parallel circuit to match the impedance by IW7EHC