This article shows how to stream data transmitted over 433 MHz Channels can be received with an RTL-SDR stick and streamed to the internet
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This article shows how to connect to HAMNET using a Ubiquity Bullet 2HP
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How to use HamNet without an antenna (but with VPN) from your whole network
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How to port a real-time operating system to a new platform in order to get a highly versatile IoT platform
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Have you ever bought water-repellent HF  connectors ? The you have most likely paid too much. Here is a neat trick how to make splashproof HF connections with household items
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APRS is an interesting way to communicate. This article shows how to set up an APRS station with your PC and a mobilinkd TNC2. ...

FLARM is an electronic device to selectively alert pilots to potential collisions between aircraft.. The accessoirs (like antennas) are known to be expensive. This article shows how to build a 5 Euro ground plane antenna for a FLARM ground station which is perfectly suited to operate with the rtl-sdr based Open Glider Network receive. ...

This article shows how I modified my Baofeng UV5R+ to disable unintentional TX operation and how to lock it down that it becomes "family-safe" ...

Bad or broken connectors within the Baofeng UV5R+ can cause the internal microphone to stop working. Fortunately there is a simple workaround to thisI ...

The HM-TRP 3DR Radio is often used for telemetry purposes in DIY drone projects. Depending where you are from you will get it in different flavours (433 MHz, 470 MHz, 868MHz and 915 MHz).  This article shows how to change the main frequency of this TRX to make it work on 433 MHz (70cm HAM / ISM band). ...