Category Homebrew

A very small active antenna

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Small active antennas like the “mini-whip” (by PA0RDT) are very popular at the moment. They provide good reception of signals from HF all the way down to the VLF band. Here in the Netherlands Van Dijken Elektronica sells a nice…

The “PoRG”

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The “PoRG” is a very simple but useful device in your ham shack. “PoRG” is an abbreviation for “Power over RG-cable” and allows you to put DC on your antenna cable. Some people call it a phantom power supply. With…

CLog 0.9b released

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Today I released CLog version 0.9b, the command-line hamradio logbook. Although still beta, the software appears to be reliable now, even when used in multi-operator contests. These are the changes in CLog 0.9b:

HB9CV-in-a-box antenna for 23cm

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The HB9CV has been a popular antenna for decades, especially on the 2m band where it is commonly used for direction finding (foxhunt). Others create arrays of HB9CV antennas for DXing. Since I needed a simple antenna for 23cm (to…

First ATV transmission

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I’m working on a 23cm ATV transmitter. A couple of years ago I already bought some modules from PE1ACB: a baseband modulator, a 23cm ATV transmitter (output 1 watt) and a controller unit. Today I hooked up all modules, together…