Category: Technology
Broadband receiver with a Quansheng UV-K5 - is that possible?
Michael OE8YML has long been fascinated by Quansheng devices. He was particularly interested in developing a cost-effective broadband receiver. Although there were already various kits on the market, none initially fully met his requirements. The turning…
HackRF Portapack Maymem H4M
The discovery I am constantly looking for interesting devices, kits, etc. During my online research I came across the PortaPack Mayhem MH4 - a promising SDR system for technology enthusiasts. After ordering, a waiting period of…
Emergency power supply with discarded batteries
For our project “2nd Life for GEL batteries” we converted two 140Ah GEL batteries from a UPS system. These batteries, which had to be replaced due to their age, should be given a second chance at…
Track air traffic live: SDRangel & RTL-SDR as ADS-B receivers
At the flea market in Vienna Aderklaa, in addition to the sale of used goods, there was also an interesting conversation with the radio amateur OE3LCR. He explained how to receive aircraft data inexpensively using simple…
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. The…
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. The…
New tools on our website
🛠️ Current tool overview This 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…
Turn old into new - recycle batteries and use them for radio activities
Recycling is worth it! Our amateur radio club Spittal Drau has impressively proven this. At the beginning of this year, one of our members received a special gift basket from a radio amateur friend from OE7…
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…
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, a…
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 2S…
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…
