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QRPhamradiokits is an online shop for custom amateur radio kits including QRP transceiver kits, tuners, cw keyers, VFO DDS, part and components

Notes on installing the miniVNA PRO software, making a calibration standard, a trap tuning loop.

An International Educational and Scientific Organization Founded in August of 1952

Brigham Young University Amateur Radio Club (BYUARC) was founded in 1949 and has been headquartered in several places on BYU campus over the years, finally coming to its permanent location in the Wilkinson Student Center in the 1970s.

New and information for the UK Radio Scout

Web site dedicated to articles relating to Ham and CB Radios and antennas, reviews and classifieds.

QSO Recorder Indexing service. This site allows radio amateurs to share their contest and DXpedition audio recordings, usually made with the N1MM Logger+ and the Qsorder plugin

An original amateur radio blog in Esperanto lenguage, all about ham radio, DX, antenna.

A comparison among a traditional J-Pole Antenna and 2BCX Slim Jim Antenna

The Washington County Amateur Radio Club was formed on June 26, 2014. Anyone with an interest in Amateur Radio is welcome to join us.

Large collection of 1900's antique Radios for sale,Floor model, Cathedral, table top, Novelty, Battery, police and broadcast band image gallery

MRRC is a club of amateur radio operators who are interested in on-the-air radio competition

Radiotronics is a nationwide U.S.A. supplier of Motorola, Hytera, Kenwood, and Icom two way radios. Shipping to all U.S. states and Canada.

SPARC The Saltlake Peaks Amateur Radio Club, founded by employees of L-3 Communications located in Salt Lake City, Utah at the Communications Systems West Division.

BktRemote Suite is a package of programs that allow you to control the transceiver with different devices via a LAN connection or WiFi. The whole suite is composed by BktRemoteServer and BktRemoteClient

A list of links on Crystal Radio projects and related reources

A web site dedicate to pedestrian and bicycle amateur radio mobile operations.

This article describes the construction of a 9,50 m long dipole for the 30 m band (10.1 MHz to 10.15 MHz). It was designed to be mounted ca. 6 m above ground inside an attic. The calculations were performed by OE1MEW

G0TRG - Trafford England

The Eagle Radio Group Mablethorpe England United Kingdom

A homebrew 13 elements yagi antenna for two meters band. These project includes two model of the same antenna with a 6 and 7 meter boom length. Detailed pictures and nec files are available for download

NARRI is to promote the development of amateur radio repeaters in Nevada USA

The TCARES membership provides communications assistance with fires, floods, search & rescue, and health & welfare message assistance to the Red Cross, without pay, using their own equipment, usually in twelve hour shifts.

2E0RDj Amateur Radio Station in Beachley, Nr Chepstow. IO81QP. Projects, Radio & Weather.

Association des Radio Amateurs Tunisiens

All Satellites Frequency List Update. A complete list of satellite frequencies available in several formats, including info on Satellite Uplink and Downlink frequencies Beacon, operative Mode, Callsign and Weather sat functionality.

In the quest for an ideal field portable antenna, the author recounts experiments involving various wire configurations. While a previous candidate, a 41ft random wire, proved effective but lacked stealth, the search led to a surprising rediscovery of a design previously rejected—the Rybakov Antenna. With a focus on simplicity, rapid deployment, and multiband capability, the author explores the versatility of a 26ft Rybakov, avoiding the halfwave trap. The article delves into the antenna's performance and its potential as a discreet, resonant solution for field operations, addressing the challenges encountered during a POTA activation. Additionally, the Unun/Balun design used in conjunction with the Rybakov Antenna is discussed, providing insights into achieving a balanced system.

The club is based in the Newhey area of Rochdale in North West England at the Ellenroad Steam Museum.

TE Systems 0510G 50 MHz meter amplifier set up for 10 watts in and 170 watts out.

An ARRL Special Service Club. Meets every Tuesday at Portland Senior Center, 7 Waverly Ave., Portland, CT 06480

Market Reef 2011 OJ0UR DX pedition by PA5R/DJ5MO, PD9DX, ON8AK and ON5UR.

These frequencies have been adopted into the bandplans of each IARU region to be a focus for emergency communications in their areas. They are not absolute frequencies but instead are centres of activity and emergency communications may be found around 20kHz from these centres. Some countries may maintain other emergency frequencies in their own bandplans due to local requirements, QRM etc

This is a Bourne Shell script that will automagically download the FCC Amateur Radio license database, parse it, and populate a MySQL database. The database can be searched using the command line and is very fast.

Construct the Peaberry, a SoftRock-compatible SDR transceiver. This project is aimed to build an amateur radio transceiver that operates on the medium or short wave bands

Listen to online WebSDR located in Andorra Europe. Four receivers on 60m, 20m, 40m, and 80m, connected to a dipole antenna direction East/West

Fans of NIST signals cite benefits including understanding the near-Earth environment

Extended Double Zepp measurements for all ham bands, and online calculator. The antenna is constructed much like an ordinary Dipole antenna but with 5/8 Wavelength Elements matched with an added Impedance Matching Section of balanced feed line

Amateur radio portable operation has a lot to offer, even if you are a shack sloth and have an awesome setup.

Transformers can be used as part of a hybrid combiner or as phase inverters for an RX antenna array.

Common-mode chokes are useful solutions for RFI reduction. Winding a few turns of coaxial cable on the FT 240-31 toroid can reduced the noise below the received noise floor. In this article author measure different chokes

Ham racio clip art collection with free to use images. Additional amateur radio clip art can be found by changing the search term

A collection of ham radio clip art royalty free. Additional amateur radio clip art can be found changing the search terms.

Ham Radio DIY projects all around morse semi-automatic and fully automatic bug keys construction manuals o semi-and fully automatic Bug keys, portable light weight magnetic loops, making a telegraph set (school project) and lots of kitchen projects (useful hamradio gear made by easily available material)

The author has build the Hermes-Lite SDR v1 and v2 versions describing with a very accurated text and picture the process. Additionally has documented measurements for each component

How to use AI (Artificial Intelligence) to identify Radio signals using a RTL SDR dongle and Linux (Ubuntu). This solution implement a framework using Keras and TensorFlow to learn and recognize the RF signals.

Magnolia Amateur Radio Club serves the Starkville area in North Mississippi.

Learn all about FT8 and FT4 digital modes in ham radio. Discover how to configure software to use these powerful modes for making contacts even in poor conditions. Find out how to hunt for awards and view instant statistics of your transmissions. Explore the benefits of using digital modes such as FT8 and FT4 for enhancing your ham radio experience.

This is a remote antenna switch I use in my attic to connect transceivers in the basement to multiple antennas in the attic. The goal of this project is to be able to remotely connect one of the antennas in the attic to the only antenna cable available.

Signal to Noise Ratio, definition and application to Radio Communications. Signal to Noise Ratio (SNR) is a figure of merit that compares the level of a desired signal to the level of background noise.

Online coloured Azimuthal Map Generator. By default, this map shows the current gray line. The parts of the Earth that are currently in the sun (i.e., daytime) appear brighter, and the parts of the Earth that are experiencing night appear darker