Lezing 15 februari 2017 (Dutch)
In February 2107, a lecture (Dutch language) was given by PA2S. Op this page, the presentation can be found, along with links to resources.
Category Archives: Technical articles
WSPR viewer
Currently, I am working on a paper regarding propagation on 60 metres. Transmissions with JT mode were used to collect spots and create datasets. A valuable datasource is wsprnet.org, to which WSPR spots are uploaded and fed to a database. The data can be downloaded. In order to support the study, I developed a WSPR… Continue reading »
JT Analyzer
One of the latest developments is a parser/analyser for the ALL.TXT files that WSJT-X and JTDX create. The ALL.TXT file contains all sent and received messages and as I wanted to have a tool to retrieve the data in a structured way, I decided to write a parser. It is made in Visual Studio 6…. Continue reading »
TenTec 229 tuner modification
Curiosity is one of my key drivers. Copying others is a dull game. Of course, sometimes, it is easier to make a copy than to create a bad lookalike, but in general, I prefer to explore unthreaded paths. That must be in my DNA:-) Thus, with the new 60 m allocation, these radio waves started… Continue reading »
JTDX compared
I promised to report a comparison between JTDX and WSJT-X. Well, JTDX is the winner. I have been using is for several weeks now and I would not revert to WSJT-X.
10 things to know for more success on 60 m
In December 2015, I wrote an article with some tips regarding 60 metres. Here is a link to the article: 10 things to know for more success on 60 m I hope it helps you to improve your station.
JT: you hate it or you love it…or?
In my humble opinion, Joe Taylor, K1JT, is a true innovator for the amateur service. As a scientist, Joe received several notable awards. The amateur community should be grateful for his efforts and resulting advancement. Many amateurs may forget that our use of frequency spectrum is justified by experiments, with possible spin-off that benefits everyone…. Continue reading »
More noise
In a recent post, I reported about my situation, comparing it with CISPR limits and came to the conclusion that these limits do not offer the required protection to comply with the European EMC directive. On the web, I found a report on the website of the European Communications Committee (ECC report 024, local copy),… Continue reading »
Noise, noise, noise
One of the most disturbing developments of the current time is the vast amount of electronic devices that are produced and fin their way to homes and businesses. Electronics have been around for many years, but in the past, these were mostly of an analogue nature. Yes, there were compatibility problems, but most problems were… Continue reading »
Where is everyone?
Some time ago, a colleague who wants to become an amateur, was given a 13 elements 70 cm yagi. My colleague asked me to test it, so it was put into the mast early September. After moving from the QTH in JO20XX in September 1994, my 70 cm station had been QRT for over 20… Continue reading »