Category: Technology
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Experiments with self-sufficient power supply for our radio station
After repowering our roof PV system after 10 years of operation, a few older PV modules remained that are ideal for experiments and craft projects, such as the emergency power supply for our radio systems.…
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Common Mode Current Indicator for Shortwave
This project article describes step by step the construction of a sheath wave indicator that shows directly on the coaxial cable whether sheath waves are being generated. When sheath waves occur, an LED lights up.…
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New tools on our website
🛠️ Current tool overviewThis post is from 2024. For a complete, up-to-date overview of all oeradio.at tools – including our own open-source projects with GitHub links – please visit our Tools page. Go to the…
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Turn old into new – recycle batteries and use them for radio activities
Stell dir vor, du sendest ein Signal mit weniger Leistung als eine Taschenlampe – und Stationen auf der ganzen Welt empfangen es. Genau das macht WSPR (gesprochen „Whisper”) möglich. Das Weak Signal Propagation Reporter-Netzwerk ist…
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Simple Strain Relief for Cables
In this guide I want to report on the ultimate strain relief, which is excellently suited for coaxial cables and all other types of cables. The strain relief is excellently suited for relieving coaxial cables…
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Build Guide: 80-Metre Dipole
In this article I describe the construction of a sturdy and powerful dipole antenna for the 80-metre band, specifically optimised for operation on 3.7 MHz in the SSB range. With good materials and precise tuning,…
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Project: Frank-N-Stein radio devices USB charger
Sometimes you are faced with the problem that a radio has lost its charger or is defective. The “Frank-N-Stein” project created exactly such a case. An old radio without a charger was equipped with a…
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Voice Bot via Digital Modes: The Future of Radio?
In a groundbreaking development, amateur radio operator Michael DC9VQ has made Nunu NARSPT‘s DMRBot available to the general public made. This exciting news was successfully tested using the Dobratsch repeater (OE8XFK). But what exactly makes…
