PD5DJ/p

4-12-2024 – Version 1.27 now available for download The Story Behind MiniBook: A Compact Logbook Solution MiniBook was created with a clear vision in mind: to provide radio enthusiasts with a compact, straightforward, and portable logbook solution. Unlike many of the heavier, installation-required programs on the market, MiniBook was designed to be lightweight and easy…

  As an avid outdoor enthusiast and radio operator, I couldn’t be happier with my new 6mm POTA cable from Messi & Paoloni, along with the POTA Speed cable winder and the matching carrying bag. This setup has truly elevated my portable gear to the next level! After years of heavy use and admittedly some…

Last summer I cycled a lot from park to park with my IC-705 and telescopic mast, with various experiments in terms of antennas. I have had a lot of fun with this, and will certainly expand this further for next summer season. The only thing I really missed is the simplicity of setting up something…

There has been a lot of ES propagation lately. With my Bigwheel antenna for 2m I can make very nice contacts. Since the Bigwheel is approximately 5dBi, I wanted a little more gain and especially some forward gain. I have known for a long time about the existence of LFA antennas from Justing G0KSC. On…

QRP UnUns (Alleen Nederlands)

Last month, I visited the fair in Beetsterzwaag and came across the booth by EPS Antennas. Among their array of intriguing equipment, a +/- 11m telescopic aluminum mast caught my eye. It was a perfect fit for my plans, so I decided to make the purchase. Back home, the excitement of my new acquisition fueled…

  During a field activation I noticed that my 10m 5/8L Vertical occasionally performed poorly. I soon discovered that a solder contact had broken loose. Probably due to transport. With some trickery I was able to temporarily solve this problem. When I got home I soon discovered that there was more going on. The center pin…

ArticelsI recently found a topic on a forum referring to a thesis by Koos Fockens, Koos received his PhD from the University of Twente for research into man-made radio interference / noise. I thought I should share this article on my website.   https://ris.utwente.nl/ws/portalfiles/portal/320583603/Proefschrift-Fockens_Rev1.pdf

In the summer of 2023 I started using a LifePo4 battery. I had made this in a bag for the time being, with all electronics loose in the bag. Of course this will cause problems at some point. To solve this I was looking for a suitable box. The problem with my size battery was…

Portable Setup Upgrades April 2024 I’ve made some additions to my Portable Setup. Auto tuner added, with a wider tune range. BalUn added to work with ladderline. Tuning Aid added. Auto tuner I had owned an ATU-100 tuner for a while. But I had a lot of problems with that. Coils that quickly went into…