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The South Alabama Radio Club is located in Covington County, Alabama in grid square EM61

Current info on DX, special events, awards, FIRAC

New and refurbished test and measurement instruments

VMARS is the Society for those with a special interest in the preservation and operation of Vintage equipment, both Military and Civil

Welcome to w0sv, the st. cloud amateur radio club. here, you will find information about the club, it's events, hamfests, on-air activities, and membership.

A modification to improve quality of built-in FT-817 Noise Blanker

Using old FM microwave equipment to operate the amateur radio 24 GHz band by EA4EOZ

C.A.R.L.A. is a growing network of repeaters providing coverage across Northern & Central California and Western Nevada. It is intended to be used as a reliable communications resource during significant local, regional and wide area incidents, and is open to all licensed amateur radio operators

An overview of coax cable often called coaxial feeder or RF cable, used to feed antennas and deliver radio frequency power from one point to another

Chart that present results of impedance measurements made on a variety of common-mode choke implementations across the frequency range 1MHz to 30MHz by G3TXQ

Bonito, butel wavecom and bogger products dealer. Accessories to decode encode and process radio communication transmissions for Radio Receivers, Transceivers and Scanners

The DARC DX Newsletter (aka DX-Mitteilungsblatt) is an important source of information for the active DXer. It is published on a weekly basis in German and English and keeps the readers up to date about current and planned DX activities.

Aprs, satelites, packet, auto ruta,iss, from spain

Gao engineering offers a wide range of affordable, popular and reliable rfid products, dsp, arm and other microprocessor evm and development boards, ides, universal programmers, emulators, dsp learning systems, micro-network terminals, test and measurement products for engineers.

Sense The Right Way To Go With The HANDI-Finder

to promote amateur radio as a hobby in the Yuma area and to provide public service to our community in the form of communications during certain public events.

Italian amateur radio and electronic components shop based in Firenze Italy

SW Radio Africa is the independent voice of Zimbabwe broadcasting on the short wave

The Rochester VHF Group, the oldest VHF-Oriented club in the World

Technical supplement manual of the Yaesu FT-8800R in english

Design Guidelines for JFET Audio Preamplifier Circuits By Mike Martell N1HFX

Some things I've discovered about learning and operating CW by Chris Kantarjiev K6DBG

Northeastern pennsylvania's premiere amateur radio club

Designed to handle audio signal interfacing as well as transmit/receive switching Reviewed by Steve Ford, WB8IM

Somalia

Radio Interferences, QRN, or noise, information by W8JI

A 2 elements delta loop antenna for 14 MHz with a MMana simulation file, dimensions, pictures of this aluminium tube based delta loop antenna, and matching system details.

We are a small club dedicated to help the community any way we can.

Connecting and configurig an USB Sound Card key to the raspberry Pi to allow digital mode decoding and remote rig applications

Designing a beacon keyer that transmit the relative output power along to call sign.

This page describes some repair tasks related to the Kenwood TS-850 transceiver. You will be guided through the repair proces step-by-step followed by descriptions and pictures.

Changing band selector to a Kenwood TL-922 power amplifier by IW1PUR in italian

SEMARA.ORG, the official web site for the Southeastern Massachusetts Amateur Radio Association.

Serving Chicagoland for over 50 years

Personal web pages with logs, information on learning cw and operating in CT-land.

General modifications applicable to any Elecraft K2

Non-profit public foundation dedicated to providing research and educational access to optical and radio astronomy. Located in Rosman, North Carolina.

For radio amateurs seeking to verify contacts or identify stations from Tajikistan, the _Tajikistan EY Callbook_ serves as a dedicated online resource. This callbook, compiled and maintained by Irage M. Tursoon-Zadeh, _EY8WW_, offers a focused database of callsigns within the EY prefix region. It provides a practical utility for DXers and contesters aiming to confirm QSLs or prepare for operations involving stations in this specific geographic area, streamlining the process of identifying active hams. The resource's utility is particularly evident for those engaged in award programs like _DXCC_ or _WAZ_ where accurate callsign verification is crucial for credit. Unlike broader, worldwide callbooks, this specialized listing ensures high relevance and accuracy for its target region, reflecting the local expertise of EY8WW. Its direct focus on Tajikistan makes it a valuable, albeit niche, tool for operators with specific interest in Central Asian DX.

Article on setting up a shotened beverage antenna with picture and setup notes by VE1ZAC

Located in Johnson City, Tennessee - Washington County EM86.

The ADIF Processor is an online application that visualizes amateur radio contacts from an ADIF log file using Google Earth. SOTA CSV log files can also be used. As well as allowing you to view and explore your contacts in Google Earth, you will be able to see a Markdown or text table of contacts, use the output ADIF file which contains QRZ.com data, accurate contact distances and fields populated from comments in the input file. Print QSL labels. One of the benefits of using the ADIF Processor before uploading/storing your ADIF file is detecting errors in callsigns and activity references (e.g. POTA or SOTA references).

Heathkit SB220 refurbishing by PA5CA

WinXXDataConverter is a Windows GUI application that will convert files between the various formats used by Win92, Win93, Win95, and Win96.

This calculator is designed to give the critical information of a particular beam antenna, in this case a three element Yagi, for the frequency chosen.

Civilianized and Militarized HF antenna systems for Portable, Base, Mobile, Manpack. Antenna manufacturer based in MO USA

Experiments with reception of digital shortwave broadcasts

KB9AMG's Top WSPR Spots presents a focused online tool for monitoring **2-way WSPR reports**, specifically detailing propagation data from February 2026 through March 2026. This resource aggregates _WSPRnet_ data, allowing radio amateurs to observe weak signal propagation conditions across various bands. The interface is straightforward, presenting callsigns, frequencies, signal-to-noise ratios, and distances for each reported contact, which is crucial for understanding current band openings and signal paths. The utility of this WSPR spotter lies in its ability to quickly visualize global propagation. Users can identify active stations and assess signal viability over long distances, with reports often showing contacts spanning thousands of kilometers. For instance, a typical WSPR report might indicate a signal from Europe reaching North America with a _SNR_ of -25 dB, demonstrating effective low-power communication. This data is invaluable for planning DX operations or evaluating antenna performance under actual propagation conditions.

Handcrafted Accessories for the shack by W2ENY includes Full range headphones with a mic, computer interfaces, mic ptt adapters

Tips and tricks to start working Meteorscatter with WSJT. Author: PE1AHX