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50Mhz 28Mhz 13.5Mhz amateur radio propagation beacons by K6FRC

Summit Prowler 6 is a pocket-sized SSB/CW transceiver for 80, 40, 30 and 20m

Website dedicated to vhf radio aurora operations by KG0VL

This is a discussion group for developers involved with the import or export of data formatted according to the ADIF standard for Amateur Radio Software.

Dealer for Russian Tubes, components and other semiconductors

A tutorial on how to setup a receiver capable to decode SSTV signals with a small RaspberryPi version 2 and a RTL-SDR dongle. The author explains how to install the needed software to interface the RTL-SDR and a step by step guide to install the QSSTV software used to decode the signals.

Signal marker for the microwave bands

The American, Continental, and International Morse Codes

This software connects to a NanoVNA and extracts the data for display on a computer, and for saving to Touchstone files.

PV Solar Panels, Photovoltaic Panels, Solar Power

NEC models are used to explore the GR5V and ZS8BKW optimizations. A third optimization is also rediscovered. The effect of fixed lengths of 75 ohm coax are explored. A link to the NEC model is provided.

SFMARC Sacramento, CA. The Samuel F Morse Amateur Radio Club was formed by those that mainly enjoy CW. We wanted a way to bring others together who also have an interest in operating CW on-air and share the love of Field Day.

Assembling the Small Wonder Labs SW+40 QRP Transceiver Kit documented by K4ICY

A mailing list in spanish to exchange shortwave dx i nformations

Electronixandmore.com, home of jon's antique radios

A folded dipole is an antenna, with two conductors connected on both sides, and folded to form a cylindrical closed shape, to which feed is given at the center.

New Club Site For Maidstone YMCA ARS

Mircules HAM QuickLog provides a mobile logging solution for amateur radio operators, supporting quick contact entry on iOS and Android platforms. It features multiple log file management, instant callsign information display including Country, ITU zone, CQ Zone, and DXCC number, and robust ADIF and CSV import/export capabilities. The application is designed for efficient logging with optional fields and default values, streamlining the process for both shack and field operations. The software includes dedicated support for POTA, SOTA, and IOTA activations through specific fields like MY_SIG_INFO, SIG_INFO, MY_SOTA_REF, IOTA, and MY_IOTA. A specialized contest mode offers real-time dupe checking and automatic TX exchange updates to enhance contest efficiency. Integration with QRZ.COM and HAMQTH.COM allows for direct operator information lookup and import, while Open Street Maps integration provides geographic context for contacts. The application also features a notes and scratchpad function for each log file.

Ramblings on amateur radio, flying, programming, martial arts, the Macintosh and who knows what.

Operating as a hub for its members, the Club Radioamateur Sorel-Tracy VE2CBS Inc. website provides essential information regarding club activities, membership management, and technical resources. It features articles on topics such as **D-STAR** digital voice mode training, offering a multi-capsule course for members to understand, configure, and effectively use D-STAR with ICOM equipment, including callsign routing and reflector connections. The site also details access to member cards, renewal processes, and upcoming events like the annual HAMFEST, which serves as a significant gathering for local radio amateurs. Beyond club-specific news, the site curates information on useful amateur radio tools and technologies, exemplified by articles on **HamClock** for propagation and satellite tracking, and a quick guide to Meshtastic for LoRa-based mesh networking. These resources aim to support members in exploring modern digital modes and enhancing their station operations, reflecting the club's commitment to fostering technical knowledge and community engagement within the Sorel-Tracy amateur radio scene.

The Mac Pass Repeater Group is the Amateur Radio club associated with the Mac Pass Radio, LLC company

CW or CW-R differences and when to use them

Article about the microstrip antenna, which is also commonly referred to as the patch antenna.

Marine antennas and systems for navy, merchant shipping, work boats and fine yachts

Sells a broad range of Electronic Test Equipment as well as a full line of Cables, Connectors, Loads and Accessories for commercial or amateur antenna installation and repair.

Vacuum Tube Data by Duncan Amplification.

tabLog has been written to offer basic logging when /P and allows for easy import into your Shack-based log via ADIF. Best performance is with a tablet in landscape mode and using a small Bluetooth/micro-USB QWERTY keyboard – QSO entry via this method is simple, and efficient.

The Shoddytenna is a 160 meters band vertical antenna intended for portable use. This antenna takes just 15 minutes to erect on site, can be carried by hand and is ideal for local groundwave work.

Tips and tricks for succesful soldering. An illustrated guide for beguinners and an usefull reminder for expert in soldering.

Use your Smartphone as an Oscilloscope to visialize signals from 150 Hz to 15kHz and as a Signal Generator to generate sinusoidal, square and triangular signals up to 15kHz

2N2/20 - A 20 Meter, Discrete Component CW Transceiver Built Manhattan-style

Digital modes and information Gran Canaria

Relays, controllers, power meters, fault recorders, power sensing products

This circuit stores a morse code message as bits in an EPROM chip, the message controls a relay that keys a CW morse code transmitter. An Arduino processor can also be used in place of this circuit, that eliminates the need to build the circuit and program an EPROM.

Grupo de Radioamadores Portuguese de Ontario

Details Amphenol's extensive product line, encompassing electrical, electronic, and fiber optic connectors, alongside coaxial and flat-ribbon cable solutions. The company designs, manufactures, and markets these interconnect systems globally, serving various communication network requirements. Their offerings support end-to-end connectivity, crucial for modern broadband infrastructure. Emphasizes the company's role as a major provider of components vital for reliable signal transmission in diverse applications. Products like _LMR(R) coaxial cables_ and various _RF connectors_ are essential for amateur radio installations, ensuring low loss and robust connections for antennas and transceivers. The focus on high-performance interconnects directly benefits hams constructing or upgrading their stations. Amphenol's broad portfolio includes specialized connectors and cable assemblies, meeting rigorous technical specifications for both commercial and amateur radio use.

What is the smallest dish for serious 23cm CW EME operation?

Ham Radio news satire, in the style of "The Onion"

A Tower Project at WOIVJ. A pictorial story of the erection of a 40 foot, self-supporting, fold-over tower.

IARU Regional bandplans

KA0KA ESSB with the Kenwood TS-850/DSP-100 project

Maxcon makes and sells Amateur Radio Antennas. Double extended Zepp antenna, multiband dipoles, bazooka antennas, and VHF Jpole, made in USA

3C9B Equatorial Guinea - Bioko Isl. and 3C0C Annobon Isl. AF-039 2010 DX-Pedition

Basic electronic circuit laws, capacitors, resistors, power circuits examples

Optimizing the Performance of Harmonic Attenuation Stubs

SDR++ is a cross-platform, open-source SDR software designed for minimal bloat and ease of use, supporting Windows, Linux, macOS, and BSD operating systems. It incorporates multi-VFO capabilities and offers extensive hardware compatibility through both _SoapySDR_ and dedicated modules. The software features SIMD accelerated DSP for efficient signal processing and provides full waterfall updates when possible, which enhances signal browsing. Its modular design facilitates the development of custom plugins, allowing users to extend its functionality. The application's focus on a bloat-free architecture and user-friendly interface aims to simplify the experience of working with Software Defined Radios. The full waterfall update mechanism is particularly beneficial for visualizing and identifying signals across a wide frequency spectrum, improving operational efficiency for radio amateurs. The modular plugin system enables community contributions and specialized enhancements, making _SDR++_ adaptable for various amateur radio applications, from general listening to specific digital mode decoding.

W4RAT based in the Virginia capitol city of Richmond.

UN DX Contest 2010 (Open Championship of Kazakhstan) result list

K6BJ-2m Repeater Maintenance and Repair Log