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It has been 40 years since the VHF-UHF Quagi antenna--a combination of the desirable features of a Yagi and a cubical quad--was developed and the design was first published in the newsletter of the Southern California VHF Club, a forerunner of today's Western States Weak Signal Society.

HamBlog is a weblog host for Amateur Radio operators.

Hundreds of ham radio operators in the US Midwest rely on regional hamfests for equipment sales, technical presentations, and social interaction. This Yahoo Groups forum serves as a dedicated platform for promoting these events, allowing organizers to post announcements and attendees to find information on upcoming gatherings. The group's focus is specifically on hamfests within the Midwest, facilitating local and regional participation in these important amateur radio activities. The platform enables members to share details about various hamfest activities, including flea markets, vendor exhibits, and license examination sessions. While the group primarily functions as an announcement board, it also supports community discussion related to event planning and attendance. The resource helps hams locate nearby events, fostering engagement within the Midwest amateur radio community.

Rack Mounts for ham radio transceivers and receivers

An economical way of building an SSB filter. The circuit is for a filter with a 6 DB band width of roughly 2.2 KHz.

Article describes a circuit that accelerates the coil of DC relays by momentarily doubling their voltage.

The life and times of development of a Linux D-Star repeater and dplus node.

A simple portable antenna for SOTA VHF is described in this article dedicated to portable operations

ContestLogHQB is a free windows contest logging program developed by Gabriele IZ5HQB. Currently in Italian, support most of the VHF and Up contests including Maraton 50Mhz.

Complete collection of the four main parts of this excellet research on modelling and designing half wave dipole antennas for 40 meters band, covering all aspects beginning from full wave length antennas, to shortened, loaded and reshaped dipoles

Simple QRP projects, 10m, 6m, WSPR beaconing, sub-9kHz and other random stuff

CCAE Software Log provides a dedicated platform for amateur radio operators to manage their QSO records, offering functionalities beyond basic logging. This application supports various operational aspects, including contest participation and general DXing activities, catering to the needs of radio enthusiasts who utilize classic equipment such as Collins radios. The software integrates features for efficient data entry and retrieval, allowing users to maintain a detailed history of their contacts. It is designed to be intuitive for operators focused on collecting and preserving their radio communication logs. The program's development by the European Collins Collector Association (F6HOY) suggests a focus on reliability and specific utility for vintage radio enthusiasts. Its core function is to serve as a robust **logbook software**, facilitating organized record-keeping for ham radio operations.

Constructing a dip oscillator provides radio amateurs with a fundamental piece of test equipment for resonant circuit analysis. This particular design, adapted by VK3YE from a concept by _Drew Diamond VK3XU_, details a practical build using readily available components. The unit incorporates four plug-in coils, covering a frequency range from **2.6 MHz to 55 MHz**, mounted on 5-pin DIN plugs for versatility. A salvaged two-gang air dielectric variable capacitor, fitted with a vernier reduction drive, serves as the tuning mechanism, with the smaller gang optimizing bandspread at higher frequencies. In practical application, the dip oscillator is used by setting the meter needle to approximately two-thirds scale. When the instrument's coil is brought near a tuned circuit under test, a noticeable dip in the meter reading indicates resonance. This allows for precise measurement of resonant frequencies in antennas, filters, and other RF circuitry, proving invaluable for homebrewing and troubleshooting. The design emphasizes short wire runs for stable operation, particularly at the higher end of its operational range.

AR5X review of popular CW QRP transceiver kits

Florida Antique Wireless Group

23cm 1296 MHz Field Day Yagi Construction, a 26 element conventional-style design. Article with several pictures and detailed homebrewing instructions

The Information Source For Makers, Experimenters, DIY, Home Brewers, Restorers, and Amateur Radio Operators

World Clocks manufacturer. The Geochron allows any observer to determine what time it is anywhere in the world

Morse code quote of the day

NOAA-19 APT Recption using GNU Radio and a FUNcube Dongle

PSK63 APRS mobile tracker for HF, FreeTrak63 - APRS PSK63 Tracker

QTH.COM by KA9FOX offer classified swap ads for amateur radio and web design along to evoluted web hosting

The Shortwave Radio Audio Archive is a collection of shortwave radio recordings in both the form of a podcast and blog with embedded audio. The collection grows every day and includes both historic and modern day shortwave radio audio recordings

Tuning HF Coaxial Antenna Traps

222 MHz kilowatt linear amplifier

Both Watts and Volt-Amperes are units of measurement for electrical power. Learn what is the difference

How to build and connect the M710 Remote Cable

The Matanuska Amateur Radio Association (M.A.R.A.) is a general interest amateur radio club, with approximately 100 members, our members are involved in every aspect of amateur radio.

Learn the new, natural way: Have a novel of your choice spelled out in English letter by letter. Letters and numbers gradually get replaced by Morse code.

Little circuit of a Morse Code Oscillator is presented here. Excellent for learning and teaching Morse code

This project is an APRS iGate for digipeater aboard the ISS. As the ISS pass over the iGate location, the TNC decoded the audio tones and creates data packets the Raspberry Pi can receive.

Ezty rope clamp manufacturer making your rope and anchor line tasks simpler. Custom made products for all your boating needs. ropes lines, rope clamps, dock lines, end tips, sleeves, sliding locks, clamps, hooks, plastic hooks, tie down kits

Portable chargers based on solar panel cells

Using external usb sound card devices for amateur radio digital modes operations

What you really need to know about spectrum analyzers

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.

Ferrite components for the electronics industry

High quality ham radio t-shirts. Made by Hams for Hams. Made in the USA.

N5ES Outboard T/R Switch For QRP Separates

On-Line VP8CRB DXpedition Log

Band filters for PA6Z made by PA9M, designed by W3NQN.

Barrie amateur radio club barrie ontario canada

Interfacing the Jabra 9450 flex wireless headset to the Icom IC 7300 ham radio trasceiver.

Manufacturer of Amateur and Commercial Repeater Controllers, Autopatches, and Accessories.

K5DKZ review of the Kenwood TL 922A

Off Road Enthusiasts that use Amateur Radio for recreation and public service.

Things on the occasion of amateur radio activity only

Independently published since 1987, home power magazine and homepower.com are resources dedicated to small-scale renewable energy and sustainable living technologies.

Test equipment and ham radio related manuals

Converting the GN9120 Wireless Bluetooth Interface for Amateur Radio