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Demonstrates a **Progressive Web App** (PWA) approach to amateur radio logging, providing a platform-agnostic solution for hams. The resource details its core functionality, including offline callsign and reference lookups, auto-formatting for data entry, and integration with **POTA spots** and saved re-spots. It highlights support for various logging templates such as General, Contest, POTA, and Field Day, indicating its adaptability for different operating activities. The application emphasizes seamless log synchronization across multiple devices, eliminating the need for manual file transfers. It operates effectively both online and offline, with installation options available for full offline functionality on Windows, Android, iOS, macOS, and Linux, or direct use within any web browser. The documentation further outlines features like rig control and the continuous development of additional templates, positioning Smart Logger as a flexible and efficient tool for managing amateur radio contacts.

This page discusses the use of the new Version 4 RTL-SDR dongle for simple QRSS reception. The author shares their experience with connecting the dongle to a PA0RDT miniwhip antenna and using RTLSDRlop QRSS software. They encountered issues with Linux but found a solution with a new driver. The page also provides information on coupling multiple dongles to one antenna and adding selectivity with a divider-filter box. Hams interested in experimenting with RTL-SDR technology, antenna setups, and software for QRSS reception will find this content useful.

The ZL1WTT resource details an experimental software-based Digital Amateur Television (DATV) system, demonstrating the multiplexing of up to six standard-definition (SD) and one high-definition (HD) channel utilizing _h264 compression_. The author encountered peak data rates reaching 32 Mbit/s, necessitating a shift to Freeview and Sky settings (22.5M Sym/s 3/4FEC) to manage bandwidth. The setup employs four networked computers, with a laptop functioning as the multiplexer to re-code PIDs for various inputs, including looped MPEG2 playlists, MPEG2 encoder card input from a VCR, satellite feeds, and an off-air UHF receiver. The system highlights the inherent flexibility of the DVB transport stream, supporting diverse formats such as MPG2, h264, AC3, and AAC. A significant advantage of this software-defined approach is the absence of video quality degradation from stored MPEG2 files to the displayed output, coupled with the ease of reconfiguring settings for MPEG2 encoder cards (e.g., size, bit-rate, frame rate, video input, coding format) and satellite receiver cards (e.g., frequency, LNB volts, symbol rate, FEC). The author also discusses the development of a new graphical user interface (GUI) using _Gambas_ for Linux, aiming to simplify configuration for this DATV project. Specific hardware components mentioned include Hauppauge WinTV PVR-150 and Nova-S plus cards, with a focus on optimizing analog video input via Y/C (S-video) to minimize frequency roll-off. The resource also provides insights into data rates for HD (1080i) content, recommending 8 to 12 Mb/s for optimal performance. Software utilized includes _Ubuntu Studio 10.04_, WinFF, VLC, and TMPGEnc Editor, underscoring the project's reliance on open-source tools and a foundational understanding of LAN networks and DVB transport streams.

Demonstrates various technical projects and tutorials for amateur radio operators, focusing on digital modes, monitoring, and station setup. It covers topics such as implementing a _WSPR_ station, setting up ADS-B reception, configuring a _DXSpider_ cluster, and utilizing monitoring tools like Prometheus and Grafana. The resource provides practical guides for integrating modern IT solutions with ham radio activities, including Docker and Linux environments for radio applications. This site also features a publicly accessible online logbook, offering detailed statistics on QSOs by band, mode, and geographical zone, with visual mapping of contacts. It includes a comprehensive amateur radio lexicon, explaining hundreds of terms, and provides a real-time display of the F4HXN station's local weather conditions. The resource also aggregates information on upcoming ham radio events and offers a **SWR simulator** for antenna analysis, allowing users to visualize ROS changes based on frequency and antenna parameters.

Open Signal, a software application for Windows 10/11 and 64-bit Linux, facilitates the transmission of color pictures, photo files, and text over HF and VHF amateur radio bands. It integrates its own error-corrected OFDM digital picture mode, delivering pixel-exact images in under a minute, with classic analog SSTV across six families: Martin, Scottie, Robot, Wraase, PD, and MMSSTV's MP/MR, featuring automatic VIS mode detection on receive. The application offers four distinct sending methods, including byte-exact JPEG transfer, a hybrid mode utilizing internet for full quality with a short RF link, and its proprietary digital waveform. This self-contained executable eliminates the need for external software like FLDIGI, Hamlib, or virtual audio cables, simplifying setup. It includes a self-filling logbook that integrates with Wavelog/Cloudlog, eQSL, and provides UDP ADIF broadcast. Built-in spotting features include PSK Reporter, DX cluster announcements, and APRS-IS position beacons. The receive-only version is permanently free, while a full license, enabling transmit capabilities and access to the live network, is available for an annual or lifetime fee. The software is actively maintained, unlike EasyPal, which has not seen updates since 2014.