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A simplified explanation of decoding West German numbers messages transmissions without a computer.

Ham Radio Ireland, a diary and photos by EI2KC Anthony

The RBN S-Meter visualizes real-time HF propagation data from the Reverse Beacon Network (RBN). It processes thousands of automated spots per hour, providing a real-time picture of active RF paths on HF bands. Users can set their vantage point using _Region Mode_ or _Grid Square Mode_. Region Mode allows selection from broad geographic areas like E. North America or Europe, while Grid Square Mode uses a Maidenhead grid square and radius for more precise data. The app displays eight region panels, each with horizontal bars for bands 160m through 6m, indicating signal strength with a color ramp from green to red. A dimmer trail shows peak hold values, and an S-unit readout provides additional detail. The app is a free web application accessible on any device, offering a practical tool for ham radio operators interested in CW, RTTY, and FT8 signals. It features a Progressive Web App installation option for enhanced usability on mobile and desktop platforms. Users can install it on Android, iOS, and Windows devices, providing a native app-like experience. The app replaces the previous Windows standalone executable, incorporating user feedback to improve features like grid square mode and automatic location detection.

Amateur radio blog from UK

SWL and amateur radio by IZ1CRR

Large personal QSL collection by I3CRW

With Varying Frequency - Amateur Radio Ponderings

This blog is maintained as a resource for the IOMARS and other persons interested in Amateur Radio.

Notes on how to properly install a Mini Whip receiving antenna in an noisy urban environment.

Ham radio blog in English and Dutch. The radio adventures of PE4BAS.

An in-depth comparison here between the various digital technologies

This is Leigh WA5ZNU's Web Log

A blog mainly about my favourite hobby-amateur radio, shortwave listening and radio in its many forms.

History of all OSCAR satellites from 1961 till today in chronological order.

Ham Blog dedicated to dxing and IOTA

Ham Radio News and more by N5FXX - Lubbock, Texas

This DIY vertical multi-band Windom antenna offers a practical and effective solution for amateur radio enthusiasts seeking a versatile and compact antenna for HF communications. Its simplicity of construction, multi-band capability, and favorable performance make it a valuable addition to any radio shack. The article provides detailed instructions on constructing the antenna and balun, along with diagrams and component specifications. Field tests demonstrated successful contacts with stations across Europe and North America on 14, 18, and 28 MHz. The antenna exhibited comparable performance to a W3DZZ dipole and outperformed a Cobweb antenna on 18 MHz. Low noise levels were observed, effectively suppressing background noise.

Sponsor of the Spartan Sprints are two-hour gatherings held the first Monday of every month.

Windows shareware contest log program for the CQ 160 meters contest

Wondering whether human body could be used as an antenna.

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.

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 _Nemos Photography_ blog presents a curated visual gallery focusing on _Morse keys_, offering a detailed photographic exploration of various telegraphy instruments. Each entry typically features high-resolution images of specific keys, highlighting their design, construction, and historical context. The content serves as a visual reference for collectors and enthusiasts interested in the aesthetics and mechanics of CW sending devices, often including close-ups of key components and unique features. This resource allows for comparative study of different key types, from vintage straight keys to modern paddles, without delving into technical specifications or operational performance. The emphasis is purely on the visual documentation of these artifacts, providing a unique perspective on the evolution and diversity of Morse key designs. It is a specialized collection for those who appreciate the craftsmanship and historical significance of telegraphy hardware.

FDlog is a free windows Field day logging program in Danish

Weak Signal Audio 160m, choosing a headphone for weak signals reception

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

K6BJ-2m Repeater Maintenance and Repair Log

How new technologies affect the art of contesting by DH1TW

Digital modes and information Gran Canaria

A blog dedicated to QRSS

Designs for QRSS TX and other Arduino based systems

A blog about ham radio. A blog dedicated to cool stuff like ham radio, birdwatching and bus timetables

A satirical look at the world of ham radio DXing and contesting. Not for those without a sense of humor or irony

What goes on at IK1ZYW laboratories, day by day

Nexus is a free and open-source ham radio software application, built in Rust by KD9TAW, designed to integrate multiple station functions into a single program. It supports fifteen operating modes, including FT8, FT4, CW, SSB, FM, RTTY, SSTV, and APRS, with both transmit and receive capabilities across Windows, Linux, and Raspberry Pi platforms. The software provides band activity displays with country, distance, and bearing information, a call roster, a 3-D propagation globe with live spots, and alerts for new DXCC, WAS, WAZ, VUCC, and IOTA entities. It also features a native RF panadapter for Icom CI-V and Flex radios, or a live audio scope for other transceivers. Nexus integrates a comprehensive logbook, computes awards offline without requiring an account, and includes repeater search functionality with curated memory packs. It offers CHIRP CSV round-trip compatibility for approximately 1,000 radio models and is compatible with WSJT-X, JTDX, and MSHV via UDP protocol for seamless integration with existing workflows. The application supports ADIF import/export for log data management and provides accessibility features for operators with hearing or visual impairments, including screen reader compatibility and keyboard-navigable interfaces.

A homemade interface for any android device, allow to receive and trasmitt SSTV PSK RTTY from an android tablet based on the DD7LP original project include demo of a sample DIY kit.

Testing a linear regulated power supply using headlight bulbs for loading.

TO2D Online log Saint Barthelemy DXpedition Log

Ham radio blog from west malaysian station 9W2MSG

Official page of the IARU High Speed Telegraphy Championships

Producers of custom name tags, luggage tags, club badges, Employee Name Tags, Special Event Badges, but also Comtech Amateur Radio Television Transmitters and Receivers D480 filters, Video cameras and accessories.

Article on how to use logic analyzers for testing complex logic-digital circuits

Blog related to ham radio t-shirt and accessory designs

Personal blog dedicated to the world of ham radio. Ivan Palcic, Novalja, island Pag, Croatia

Design, develop, test and manufacture a wide range of Amplifier products including highly linear class A Broad Band, Cell Band, Pulse, AM & FM broadcast and Military VHF

My view on the world of AMATEUR RADIO- "Rambling on" so to speak

HSMM-MESH or Broadband-Hamnet - Canada a web site dedicated to HamNet development in Toronto Area

An experimental antenna for HF reception. It consists of a single loop element mounted on the ground. It is stealthy, small, and quiet. EZ-NEC plots and on-air test results are included.

A group of hams from the Rio Araguaia region

radio.McDougallsHome.net The Web site and Blog of Amateur Radio Station K7JM. Homebrew, Construction, Operating, and Discussion