GridTracker

GridTracker. It is a specialized, open-source software application designed primarily for use by amateur radio operators participating in WSPR and FT8 digital communication modes. The program provides a sophisticated, map-centric interface for visualizing real-time and historical radio activity, integrating directly with popular logging programs like WSJT-X. Its development is driven by the amateur radio community, emphasizing usability and powerful data presentation to enhance the operator's situational awareness and log-keeping efficiency.

Overview

The software acts as a visual companion to established digital mode applications, parsing data streams to present a dynamic geographical display of radio contacts and propagation paths. By aggregating spots from the global WSPR database and decoding data from WSJT-X, it allows operators to see their signal's reach and monitor band conditions across the Maidenhead Locator System. This real-time cartographic approach has made it an invaluable tool for contesting, DXing, and propagation studies within the hobby, offering insights that traditional text-based logs cannot easily provide. Its adoption has grown significantly since its inception, particularly among users of the GNU Radio-inspired K1JT software suite.

Features

Core functionalities include an interactive world map that plots stations, paths, and grid squares in real time, with extensive filtering options for callsign, band, and mode. It features deep integration, automatically importing decoding data and transmitting statuses from WSJT-X and JTDX, while also supporting two-way communication with external logging programs like Ham Radio Deluxe and N3FJP's applications. Advanced features include a dedicated WSPR beacon database viewer, customizable audio spectrum displays, and automated logging of QSO details. Alerts for specific callsigns or DXCC entities, along with detailed statistics panels, help operators identify rare contacts and track personal achievements.

Technical specifications

Built using the C++ programming language and the Qt application framework, it is a cross-platform application natively compiled for Microsoft Windows, Linux, and macOS operating systems. It communicates via standard network protocols to fetch data from the global WSPR network and uses local UDP or TCP sockets to interface with WSJT-X. The software is distributed under the GPLv3 open-source license, with its source code hosted on GitHub. System requirements are modest, needing only a standard desktop computer with an active internet connection and a sound card capable of supporting the digital modes used by K1JT's software.

Integration with amateur radio

Its primary role is to bridge the gap between raw decoding data and actionable operating intelligence, becoming a central hub for FT8 and WSPR enthusiasts. By visualizing the link between a decoded signal and its origin on a map, it directly supports activities like DXpedition planning, awards tracking for programs like ARRL's Worked All States, and scientific citizen science propagation research. The software's ability to export data seamlessly to major logging platforms streamlines the workflow for contesters and casual operators alike, reinforcing its position within the modern amateur radio software ecosystem alongside tools like CloudLog and LoTW.

Development and history

The project was initiated in 2017 by programmer and amateur radio operator "NightWolf," born from a desire to create a more intuitive visualizer for the then-emerging FT8 mode. Early versions focused on mapping WSPR spots, with rapid community feedback driving the addition of WSJT-X integration. Development is conducted openly, with a team of contributors collaborating via GitHub and user support forums. Major updates have consistently expanded its feature set, including support for MSK144 for Earth-Moon-Earth communications, enhanced awards tracking, and improved performance. Its growth mirrors the explosive popularity of digital modes in amateur radio, influenced by the work of Joe Taylor and the ARRL.

Category:Amateur radio software Category:Free software programmed in C++ Category:Cross-platform software