A technology blog to show my creations and thoughts, to inspire others and to share the fun!

Ernest

Joined: November 30, 2013
Articles: 76
Comments: 83

Tools and measurement

3D printed solder holder

3D printers are getting more affordable now, and although I originally bought one for my wife, I was absolutely certain that it would be useful for my home brew stuff too.

Ernest
31 December 2016

Software

Recently I have transferred the CLog software to my GitHub repository. I’m currently centralizing my code at GitHub since I wanted to get rid of sourceforge.net (my previous repository for CLog) and prefer GitHub nowadays.

Ernest
14 December 2016

Transmitters and receivers

Neophyte receiver for 60 meter

The Neophyte receiver is an easy-to-build receiver, already built by lots of people. Many radio clubs used it as a project for starting builders. It was developed by John WA3RNC and first published in QST, February 1988. The circuit can…

Ernest
30 December 2015
2 Comments

Antennas, Transmitters and receivers

Receiving SAQ and other VLF stations

This article is about receiving radio stations operating in the VLF band (3-30 kHz). Due to the very low frequency, receiving such stations requires some special equipment, since most radios don’t support these low frequencies. One of the interesting stations…

Ernest
24 December 2015
5 Comments

Homebrew

How to get rid of your prototype board

When you started discovering microcontrollers, you probably bought some kind of evaluation or prototype board. The microcontroller chip itself is placed in a nice socket on a PCB, surrounded by power circuit, some I/O, and RS232 or USB connector for…

Ernest
5 December 2015

Tools and measurement

Step attenuator kit

I’m the proud owner of a MiniVNA for quite a few years already. One of its features is that you can use it as an RF signal generator. However, the output power cannot be adjusted, so I needed an attenuator.…

Ernest
18 October 2015
5 Comments

Transmitters and receivers

Tiny Tornado for 80m

Many years ago I built a prototype of the famous “Pixie 2”, one of the simplest and smallest CW transceivers ever designed. The main issue is that the TX and RX frequency is the same, so the opposite station needs…

Ernest
11 April 2015
1 Comment

VERON PACC

Does war impact amateur radio activity in Ukraine?

During the PACC contest last weekend we had contact with lots of Ukranian radio amateurs. However, there is a terrible war going on in this country. So… does this war impact amateur radio activity in Ukraine?

Ernest
17 February 2015

VERON PACC

PACC 2015: again we improved our own top score!

The PACC contest in 2015 has ended. For us it was another successful contest, again we improved our score. This year we claim 212.550 points.

Ernest
15 February 2015

Antennas, ATV

Short DL6WU yagi for 23cm

In the previous Winter I built a HB9CV-in-a-box for 23cm for my uplink to the local ATV repeater PI6ATV. Although this antenna works nicely, its gain just isn’t enough when their 23cm preamp is broken (which, unfortunately, is the case…

Ernest
1 January 2015
8 Comments