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January 1955 QST article by W5DQV about constructing a Cubical Quad antenna for 14MHz PDF File

Choosing a vertical antenna. Buying guide to amateur radio HF vertical antennas by Bencher inc

Reliable amateur radio software for OS X and Windows that works the way you expect. Spot allows you to chase the DX that really matters by putting you in charge of which DX spots you need to see and alarming you when they appear.

Beautiful Colorado mountain cabin with ham radio access at the foot of Mt. Princeton

An old post by John Doty about effects of noise in longwire antenna.

A PC headset to Rig adapter. Include a circuit diagram and a full part list for the project

How to build your own beverage antenna for 80-160 meters band by K5ZD

A J-pole antenna plan made using a half inch copper tubing

Russian Internet Callbook

This article describes a project of asymmetrical hatted vertical dipole, a portable antenna that can be used for field day operations, sota, campings or even for fixed installations. This is a freestanding 20-10m antenna that is really easy to build, easy to tune and relatively easy to carry.

Free memory management software for the Yaesu FT-991 and FT-991A models. It runs only on Windows 7, 8, 8.1, 10 both 32 and 64 bits, it also permits basic remote control features and allow backup and restore settings and memories. Documentation in mainly in French.

An interesting article by K3DAV comparing the COMET CHA250B to other HF multiband vertical antennas

Over 47 full-screen maps are available within _NAOMI_ (North American Overlay Mapper), a free Windows program designed for US and Canadian amateur radio enthusiasts. This mapping suite includes 9 backgrounds such as CQ Zones, ITU Zones, and ARRL Sections, along with 16 foreground layers like Counties, Areacodes, and Grid Locators. Users can calculate distances and bearings, track real-time mouse positions with continuous Grid-Locator data, and integrate with APRS for live station tracking via the FindU database. For a global perspective, the _Global Overlay Mapper_ (GOM) provides a world map, 8 continental maps, and 29 sub-continental maps, all with 12 active layers including Country Outlines, CQ/ITU Zones, and Prefix information. Both NAOMI and GOM offer feature-locate systems to jump to positions based on prefixes, capital cities, or Grid Locators, and provide customized beam headings and distance displays. The site also features _LogView_, a post-contest log visualization tool that analyzes Cabrillo-format logs by plotting QSOs on maps, supporting over 30 major contests like CQWW and ARRL DX, and allowing comparison with published results.

Double Bazooka Antenna, a simple coax based and broad band antenna you can easily build

summary or overview of UK or British amateur radio callsigns or call signs and the types of licence used in the UK by ham radio operators.

Special exhibit dedicated to Marconi inventions now online

Statistics based on FCC Database. Data is compared to previous perions.

qrq is an open source Morse telegraphy trainer which runs on several operating systems (Linux, Unix, OS X and Windows), similar to the classic DOS version of Rufz by DL4MM.

This online article provides a list of individuals who hold or have held amateur radio callsigns, detailing their public recognition. The resource identifies specific callsigns such as **K1JT** (Joe Taylor, Nobel Prize in Physics), **W6OBB** (Art Bell, syndicated radio personality), and **JY1** (King Hussein of Jordan), linking them to their non-amateur achievements. It also notes operational statuses like _Silent Key_ for deceased operators and _lapsed callsign_ for inactive licenses. The article includes information on callsign changes due to vanity callsign programs and provides examples of individuals involved in specific technical areas, such as Percy L. Spencer (**W1GBE**), inventor of the microwave oven, and Jay Kolinsky (**NE2Q**), inventor of electronic sirens. It also references amateur radio involvement in _space missions_ for individuals like Owen Garriot (**W5LFL**) and Helen Sharman (**GB1MIR**). DXZone Focus: Online Article | Famous Hams | Callsign Status | Vanity Callsigns

Original drawing and design of a 4 and 7 elements yagi antenna for 50 Mhz

The Clearwater Amateur Radio Society is an active amateur radio club based in Pinellas County Florida.

An engineering oriented organization specializing in the design and manufacture of high performance parabolic antennas, 3dB high power RF couplers, Antenna power splitters, directional RF couplers and more items for RF transmission from HF through Microwave frequencies.

MDS-HAM Amateur Radio Products help make operating easier with the Introduction of the RC-1-Y, and RC-1-M rotor control box. A digital rotor control box with a serial computer interface at an affordable price which is made in America.

Ham radio map database with search and logging functions. Currently in german only, run under Windows.

Highly integrated Logging, DXing, Contesting and Station Control Software, commercial version, run under windows 2000 or higher.

Grahams Goldcoast Australia Radio Scanner Frequencies

This 4m Slim Jim Antenna is cheap and easy to build yet it greatly out performs the more usual dipole due to its low angle of radiation. An SWR of 1:1 is obtainable across the 4m ham radio FM band with a simple adjustment.

A perfect companion for your Elecraft K1 or any other (not power hungry...) QRP rig

Design for a 5 element 2 Metre beam with a forward gain of 8dBD and a front to back ratio of over 24dB.

The circuit described below will substantially reduce or completely eliminate interference from almost any local source whilst leaving the wanted signal relatively unaffected, even though it may be on the same frequencey by TREVOR, G3ZYY

Pipe your signals to 146 and 445 MHz with one antenna!

ebook2cw is a command line program (optional GUI available) which converts a plain text ebook to morse code MP3 files. It works on several platforms, including Windows and Linux.

The simple and safe RS232 CAT interface for Yaesu FT-1000MP, FT-1000MP Mark V and FT-1000MP Mark V Field rigs

About the G5RV antenna, construction notes and tipical dimensions

Ham Start, starter kit. Stugy guides, resources, exams, upgrades and morse code. A guide for beginners and license upgraders, Resources for getting started and advancing in ham radio (USA)

This is a design for a stealthy HF multi-band vertical wire antenna using a tree as a supportby G7AQK

Setting up a Raspberry Pi as Remote Server for RTL2832u SDR

A homemade VHF/UHF vertical antenna made essentially with RG58 coax cable, with a 9 turns choke balun to prevent the shield acting as a RF Radiator.

Theory of horizontal loop antennas, as discovered by G2PL using a lowered quad antenna and theorized by ZS6AKA

WM7D's FT100 resource page, dedicated to providing information about and resources for, the FT100

Ham Radio Mapping and QSL managent software

Ham Radio repair of all major brands and models, located in Carrollton, Texas, which is just north of Dallas, and have been serving the Amateur Radio community for over 20 years.

The website provides information on the Romanian Amateur Radio Federation's participation in the World Youth Radio Orienteering Championships in 2025. It includes details on the event, the participants, and their results.

Find the best placement of a mobile antenna

Treffpunkt Amateurfunk (German)

Packet Radio, dx news, QRP, awards and software from slovack radio club

A simple center-fed dipole made just with a thin-wall PVC pipe, aluminum tape, and RG-8X coax

Raspberry Pi WebSDR Receiver Project running SoftRock Lite ii Receiver (40m) and Raspberry Pi Model B

QSL Cards from ALL 338 DXCC Entities, deleted countries QSL Cards, other interesting cards

Interesting post with a practical video of using solar panel with a yaesu ft-857.