Author: Michael | OE8YML
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Kabelblick – coaxial cable attenuation calculator
Calculate the signal loss of your coaxial cables With Kabelblick you can quickly and easily calculate the attenuation of your coaxial cable at any frequency. No matter whether you work on shortwave, VHF, UHF or even in the microwave range – Kabelblick shows you exactly how much signal is lost in the cable. Start Kabelblick…
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QSO Buddy: Practice radio conversations interactively
You finally want to speak confidently into the microphone? QSO Buddy is your interactive trainer for amateur radio conversations (QSOs). Learn step by step how a typical radio conversation works – from the CQ call to the farewell at 73. Why QSO Buddy? Many newcomers have respect for the first QSO. What am I saying?…
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Antennenblick: Interactively Understand Radiation Patterns
Anyone who works with antennas knows the problem: Radiation diagrams in books and online resources are often static, difficult to interpret and only show a single operating case. Antennablick changes that – a new, interactive tool for understanding antenna radiation patterns. What is antenna view? Antenna view visualizes the radiation characteristics of different types of…
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PrefixPlay: Learn call sign prefixes while playing
If you want to be quick in a contest or simply want to know where a call sign comes from, you have to know prefixes. PrefixPlay makes learning amateur radio call sign prefixes a game. Why learn prefixes? Every amateur radio call sign begins with a prefix that reveals the country. When you hear “UA3…”…
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CQ Nothing: Why doesn’t anyone answer?
You call CQ at 20 meters – and there’s… nothing. No answer. CQ Nothing helps you understand why this can happen and how to systematically analyze errors. What is CQ Nothing? CQ Nothing is an interactive learning tool for amateur radio beginners. It presents realistic scenarios from radio operations and asks you to analyze possible…
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First Contact – Learn shortwave propagation through experimentation!
You probably know this: You sit in front of the rig, turn the VFO and ask yourself – why is there nothing going on at 20m while the place is full at 40m? Or why does the ZS6 from South Africa suddenly come in with S9+20 at 10m, even though the tape was completely dead…
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Becoming a radio amateur – Getting started is easier than you think
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Have you ever imagined what it would be like to communicate with people all over the world via radio without the Internet? This is exactly what amateur radio makes possible! It opens up a fascinating world full of technology, international contacts and exciting experiments. Whether you want to deepen your technical understanding, meet new people…
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Becoming a radio amateur – Getting started is easier than you think
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Have you ever imagined what it would be like to communicate with people all over the world via radio without the Internet? This is exactly what amateur radio makes possible! It opens up a fascinating world full of technology, international contacts and exciting experiments. Whether you want to deepen your technical understanding, meet new people…
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What is an SDR? An overview for radio enthusiasts
Software instead of hardware: The SDR principle A Software-Defined Radio (SDR) is a radio receiver in which a large part of the classic hardware is replaced by software. Instead of requiring separate devices for each operating mode or frequency band, the software takes over the signal processing with SDR. This makes SDRs extremely flexible and…
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How far can I really get? Easily create RF propagation maps yourself
Planning radio coverage made easy – with Radio Mobile Online If you want to know how far your signal really reaches, Radio Mobile Online is a really powerful tool. The tool was developed specifically for radio amateurs and simulates radio wave propagation using terrain data and proven mathematical models.In this short guide, I will show…
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🏕️ Wavelog – the online logbook for portable radio operation
A flexible logbook that can be accessed at any time is particularly important for portable radio operations (e.g. POTA, SOTA, field days).With Wavelog, a modern, web-based amateur radio logbook is now available on oeradio.at, which is particularly suitable for mobile use. 🔗 https://wavelog.oeradio.at(The link can be found permanently in the menu under Tools.) 📡 Why…
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Setting up MSI2500 SDR (RSP1 Clone) on Ubuntu – step-by-step instructions
This guide shows how to get an MSI2500 based SDR receiver (like RSP1 Clones) running on Ubuntu Linux with GQRX. The instructions are also suitable for beginners without much Linux experience. What is the MSI2500? The MSI2500 is an SDR receiver chip that is installed in many inexpensive SDR dongles. These devices are often sold…
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Making SDR Accessible Worldwide: A Radio Amateur’s Guide to Cloudflare Tunnels
Or: How I learned to forget port forwarding and love the cloud 🙂 Introduction Dear radio amateurs! Tired of struggling with your router’s port forwarding settings? Annoyed by DynDNS services that give up at the most inopportune moment? Want to share your awesome OpenWebRX+ setup with the world without exposing your home network to the…
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MeshCom: Your entry into a decentralized radio mesh network for radio amateurs
What is MeshCom? – a simple overview MeshCom is an open source project from the Institute of Citizen Science for Space & Wireless Communication (ICSSW), which aims to realize text-based communication via LoRa modules in amateur radio (433 MHz). Advantages of MeshCom Use in amateur radio context Since MeshCom is based on amateur radio principles…
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📱 Use HAMSIP with the iPhone – step by step for beginners
You want to make calls with your iPhone via HAMSIP? Here we will show you how to set up everything – from the VPN connection to the Hamnet to the finished telephony with a SIP app. These instructions are written in such a way that they work even if you have no experience with VPN…
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Setting up HAMSIP telephony on the PC – step-by-step
This is a follow-up to “HAMSIP Telephony: Our New Toy” and describes how to set up HAMSIP completely on a Windows PC, without a SIP phone and additional network hardware. 1. Request Hamnet access 2. Set up VPN on Windows 3. Request SIP user 4. Install and set up MicroSIP 6. Import contacts (optional) Download…
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HAMSIP telephony – Our new toy
Some time ago we attended a HAMNET workshop in Vienna and since then we have been playing around with the Internet for radio amateurs. A separate number range on the Internet, starting with 44.xxx.xxx.xxx, is reserved for radio amateurs. Apparently the association that manages this sold some of it to Amazon, but there are still…
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Radio meeting in Maria Rain at the Schmankerl in April
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Invitation to the radio meeting in Maria Rain Dear radio friends, The radio friends Klagenfurt Land and Karl, OE8JHK, cordially invite you to a friendly radio meeting. When? Thursday, April 10, 2025, from 6:00 p.m.Where? Gasthaus “Schmankerl”, Maria Rain Look forward to a cozy evening with interesting conversations about our shared hobby and the opportunity…
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Powerful radio power supply with Einhell batteries
As an enthusiastic radio amateur, you are always looking for innovative solutions to operate your station efficiently. I asked myself: Why not use the tried and tested Einhell 18V batteries to supply my transceiver with maximum performance? An experiment that is not only practical, but also offers a lot of learning potential! This DIY amateur…
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Radio and skiing at the end of the world
The story started with our visits to the radio camp in Döbriach on Lake Millstättersee. The idea was actually to get our son interested in radio engineering. But it infected me with the radio virus. I met a lot of new people there and was also part of some Sota activations. Having always enjoyed mountain…
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2m SSB Round – Every Wednesday at 8:00 p.m. LT (UTC+1): A highlight thanks to Raimund OE8ANK
Dear radio friends, Thanks to a great idea from Raimund OE8ANK, there is now a new way to liven up the 2m bands and conduct exciting QSOs: the SSB round on 2m. This takes place every Wednesday at 8:00 p.m. LT on 144.320 MHz USB. A big thank you to Raimund for this initiative, which…