Search results

Two live MP3 audio streams provide real-time reception of meteor forward scatter signals, allowing listeners to hear radar echoes from meteoroid disintegration. The system operates on **67.25 MHz**, utilizing an Icom PCR-1000 receiver with a 6-element Yagi antenna pointed skyward. This setup detects reflections from ionized meteor trails created at altitudes of 80 to 130 km, using distant Channel 4 TV transmitters in the southeastern USA as signal sources. Scientists Rob Suggs, Bill Cooke, and Jeff Anderson of the Marshall Space Flight Center Engineering Directorate developed this experimental radar to monitor near-Earth meteoroid activity. A typical day yields about one meteor ping per minute, with significantly higher rates during meteor showers. The optimal listening period is generally around dawn, from 0800 to 1400 UT, due to Earth's orbital motion encountering more space dust on the dawn side. The system's **CW demodulator** processes the 67.250 MHz signal, presenting it at approximately 700 Hz with a 3 kHz bandwidth and AGC off, inverting the passband for Doppler shift analysis.

The HF Beacon Tracker is an advanced interactive tool designed for DXers and ham radio opoerators in general to monitor active beacons operating below 14 MHz. Built upon a high-fidelity 3D Earth globe, the application provides a spatial perspective on signal paths by integrating real-time environmental data with a comprehensive beacon database curated by Mirek OK1DUB. Beacons are plotted using precise Maidenhead locators and feature a real-time day/night terminator overlay to help operators identify Gray Line propagation opportunities. With a single click, users can calculate the exact distance from their own QTH to any beacon, visualized via an animated Great-Circle Path arc on the globe surface. To enhance its diagnostic capabilities, the tool seamlessly integrates with PSK Reporter, allowing users to right-click CW beacons to instantly fetch current reception reports and signal strength data. The interface is fully optimized with a mobile-responsive design, smooth globe rotation, and togglable Dark/Light themes suitable for any shack environment. Whether you are performing antenna gain tests, conducting ionospheric research, or simply hunting for band openings, the HF Beacon Tracker transforms raw database information into an intuitive, visual diagnostic suite. It serves as an essential asset for any operator looking to master HF band conditions.

Examines current amateur radio satellite operations as of May 2026, providing a practical overview for hams interested in making their first satellite QSOs. The resource differentiates between Low Earth Orbit (LEO) satellites, such as the _ISS_, SO-50, RS-44, FO-29, AO-7, and GreenCube, and the geostationary QO-100. It highlights the distinct operational requirements for each, noting that LEO birds necessitate real-time tracking, antenna rotation, and Doppler compensation. The article emphasizes the critical practice of listening before transmitting and outlines methods for monitoring QO-100 in real time via the Goonhilly Earth Station WebSDR. It also covers tracking LEO satellites using tools like N2YO.com, Heavens-Above, and amsat.org/status. The author's experience with these platforms informs the guidance on equipment considerations and operating practices, ensuring hams understand the nuances of satellite communication in 2026, including the significant impact of QO-100 since its 2019 launch.

KlaTrack is a Windows-based software application designed to assist amateur radio operators with satellite communication by predicting spacecraft visibility. It provides a simple interface to determine when specific satellites will be above the local horizon, a critical factor for successful two-way contacts via amateur radio satellites. The program processes _Two-Line Element_ (TLE) data to calculate orbital mechanics, offering a practical tool for satellite operators to plan their operating windows. It supports real-time tracking and displays essential pass information. This utility simplifies the complex task of satellite tracking, allowing operators to focus on making contacts rather than manual orbital calculations. While specific gain figures or distances are not quantified, the software's core function directly supports achieving successful satellite QSOs by providing precise pass predictions. It is particularly useful for operators engaging in activities like working the International Space Station (ISS) or other low-Earth orbit (LEO) satellites, where short pass times and precise timing are crucial for maximizing contact opportunities.

The Aziloop DF-72 antenna system provides 72 K9AY headings and 36 loop axes, allowing for rapid switching in 60 ms. It integrates a switchable 18 dB preamp, a 4-step attenuator (0-18 dB), and four 7-pole preselection filters to optimize receiver performance. The K9AY load is adjustable from 250 Ohm to 950 Ohm in 50 Ohm increments, offering flexibility for various receiving conditions. Control is managed via an intuitive Windows UI, supporting Local, Client, or Server modes, with headless remote operation possible through the built-in Ethernet Server. _Omni-Rig_ support facilitates auto-filter selection, PTT muting, and Rig-Sync functionality, enhancing integration with existing station setups. Designed by _GW4GTE_, the system utilizes a low visual impact, small-footprint antenna with orthogonal loops and an earth connection. It is suitable for general monitoring, co-channel station resolution, basic direction finding, and interference reduction across the VLF to HF spectrum.