La traduction auto de X manque encore un peu d’entraînement ;-)

SH6 updated with latest CQWPXCW public logs. SH6 is a free contest log analyzer for ham radio operators with archive of more than 2,2mio logs. No install, no signup, no ads - just open it and go s53m.com/SH6/ #hamradio #CQWW

Warming up a NOS tetrode. #hamr

BREAKING NEWS: Sting has been kidnapped. The Police have no lead.

Olivier F5RDS SK :-( arp75.org/?p=2505

🌍 Please to announce the new version of my worldwide VHF tropospheric propagation forecast tool is live at tropo.f5len.org/WW/ smoother map, ◀▶ navigation between forecast steps, and smart GeoTIFF preloading for near-instant browsing. Feedback welcome! #hamr#VHF #tropo

Et si vous voulez jouer avec : converter.phiphou.com (rubrique codes)

Yesterday, a UK Government Army specialist team parachuted onto Tristan da Cunha — one of the most remote islands in the world — to deliver critical medical support after it was confirmed that a person on the island was suspected of contracting hantavirus. We tracked the Airbus A400M Atlas operating the flight to and from Ascension Island using satellite data.

#Morse Runner in the web browser. Nice... fritzsche.github.io/WebMorse… #CW #CW4EVER #pileup

First pic of liftoff just arrived. No words, just Ariane 6 in its full power 🫰 #VA268 📸2026 ESA-CNES-Arianespace-ArianeGroup/Optique Vidéo de CSG - S MARTIN

Fixing a Locked-Up RTL-SDR 700 km Away Using uhubctl USB Power Cycling rtl-sdr.com/fixing-a-locked-…

Brilliant hack. Turning the SX1262 LoRa engine into a GPSDO-disciplined coherent LFM source opens a real ionospheric chirpsounder for hams — at a BoM that finally makes a NCDXF-style distributed network thinkable. Minimal ProAm node: SX1262 dev board (~€15), onboard xtal replaced by an amateur GPSDO output feeding XTA. Required: ppb frequency stability, ~µs timing alignment — well within reach of homebrew amateur GPSDO designs. Mixer to HF (ADE-1, ~€8) or transverter IF. Mandatory bandpass on the target band — harmonics are severe at low f. Driver LPF, 5-10 W. RX side: ideally a custom board pairing GPSDO and SDR front-end on the same PCB, in the spirit of KiwiSDR — shared reference clock, on-board ADC, Ethernet IQ streaming. The right open-source ProAm artefact. Processing: Raspberry Pi 5 (~€80), Python/GNU Radio dechirp pipeline. Real-time at SF12 / BW 7.8 kHz is trivial. Total: ~€400-600 per node. Regulatory discipline mirrors the NCDXF/IARU beacon model: coordinated frequencies, low duty cycle, CW ID between sweeps, lowest power that closes the link, declared experiment. Candidate bands matched to ionospheric science: 5 MHz (WRC-15), 10, 14, 21 MHz. What a handful of nodes across the World would deliver: Real-time oblique ionograms on multiple paths TID maps (Travelling Ionospheric Disturbances) Sporadic-E nowcasting @f5uii 😀 — holy grail for VHF DXers Solar-flare SID detection Geomagnetic storm response tracking Ground-truth for IRI / NeQuick model validation @HB9VQQ 😉 Meteor-burst statistics as by-product on 50 MHz Silicon costs less than a decent microphone, and the science is real. Genuine ProAm territory.

Aujourd'hui, le pas de tir Soyouz à Kourou a été détruit. 27 lancements ont eu lieu entre 2011 et 2022, jusqu'à l'invasion de l'Ukraine qui a entrainé la fin des activités. C'est Maiaspace (une startup d'ArianeGroup) qui a depuis récupéré le site pour son lanceur au méthane Maia.

This video illustrates the "levante" phenomenon on the Rock of Gibraltar. The "levante" is an east wind carrying moisture from the Mediterranean. When it encounters the rock's steep terrain, it rises, cools, and condenses, creating clouds, mist, and fog. 📹 Met Office

Ok. Who forgot to pay the propagation bill this month? I paid it last month.

Fun little POTA activation Sunday : 20m CW in ultra-light QRP setup with my QMX (5 watts), running a simple dipole for a few nice QSOs from Bassin de Saulx-les-Chartreux (POTA FR-7121). Always amazing what you can do with such a tiny setup!

Swarm 🤝 deep learning. This paper reviews progress in modelling the ionosphere with neural networks 🧠 🤖 🔗oaepublish.com/articles/ir.2…