Category: Technology
KiwiSDR: The Global Network of Open HF Receivers
Imagine being able to access a shortwave receiver in New Zealand from your living room, simultaneously open a second one in Japan, and triangulate a signal with a third in Scandinavia — all in your browser,…
Show us your boxes: the repeaters of CarinthiaMesh and the people behind them
Just before midnight on 22 August, a request went out in the Carinthian MeshCore channel: show us your repeaters. What came back is a stock-take in pictures: 37 active sites built from garden lamps, 18650 cells and a fair amount of climbing.
Running OpenWebRX+: Your Own Web-Based SDR Server
Imagine sharing your radio receiver with the entire world — directly through a web browser, without anyone needing to install software. That is exactly what OpenWebRX+ enables: an open-source project that turns a Raspberry Pi and…
SOTAmesh: SOTA spots on the MeshCore network, even without internet
The antenna is up, the phone shows no bars, and the spot never goes out. That is exactly what the new MeshCore channel #sota is for, and SOTAmesh is the web page where chasers can follow it live.
126.9 Kilometres on Half a Watt: How Carinthia's Mesh Network Grew to 32 Sites in Two Weeks
126.9 kilometres from the Koralpe into Slovenia, sent with half a watt. There is no provider and no mandate behind it, just eight people carrying boxes up mountains. A stocktake with numbers, and with what the numbers do not say.
MeshCore: Radio Without a Mobile Network. Now Is the Moment to Join In
There are moments when you can get in on a radio project early enough that your own participation still changes something. With MeshCore , that moment is now. The network is growing, the map still has…
Troposcatter and Rain Scatter – VHF/UHF DX via Atmospheric Scattering
On VHF and UHF, range normally ends at the horizon. But the atmosphere has some tricks up its sleeve that enable radio contacts far beyond line of sight — without the ionosphere, satellites, or the Moon.…
AREDN: Mesh Networks Using Wi-Fi Hardware for Amateur Radio
Imagine turning a second-hand Wi-Fi router costing EUR 30 into an amateur radio network node that automatically connects with other nodes, forms a self-healing IP network and runs services such as VoIP telephony, video surveillance or…
New Website: Homebrew Instead of a Kit — oeradio.at Now Runs Static
If the new green looks familiar: oeradio.at has been completely rebuilt. WordPress is history — the site is now static, much faster, and open source.
VOACAP Online: Understanding and Using HF Propagation Predictions
Anyone who operates on HF knows that propagation conditions determine whether a QSO succeeds or not. But must we leave it to chance? No — VOACAP Online lets you predict, plan, and optimise HF radio contacts.…
kv4p HT: Turning an Old Smartphone Into a 2-Metre Radio
A hands-on report by Michael, OE8YML My old Samsung Galaxy S9+ spent years in a drawer. Now it is, among other things, a 2-metre radio — and it gets used for other amateur radio and radio…
Alpine Propagation: How Mountains Affect VHF/UHF Propagation
Knife-Edge Diffraction Mountain ridges act as edges where VHF/UHF signals diffract. Enables QSOs over mountains. 2m/70cm benefit most. Mountain Reflection Smooth slopes reflect signals — dual-path effect causes fading. Optimal Locations High-elevation sites (alpine meadows, summits)…
