Category: Homebrew
3D printed solder holder
CLog transferred to GitHub
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. — more →
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 be used to create either a 80m or a 40m receiver, depending on a few capacitors. The 60m band is just in between, therefore I decided to find out the correct caps for this new amateur radio band (well… at least new in the Netherlands, from December 2015).
Receiving SAQ and other VLF stations
![[Image]](http://www.pa3hcm.nl/wp-content/uploads/2015/12/Grimeton_VLF_masts-300x210.jpg)
The huge VLF antenna of SAQ near Grimeton, Sweden (credits).
How to get rid of your prototype board
![[Image]](http://www.pa3hcm.nl/wp-content/uploads/2015/12/20151205_164646-300x169.jpg)
The ATmega328 microcontroller, just removed from the Arduino board, ready to start living on its own.
Step attenuator kit
Tiny Tornado for 80m
Short DL6WU yagi for 23cm
Getting started with Arduino: morse keyer
First experiences with my 30m QRP transceiver
Simple signal tracer
5/8 Wave vertical antennas for HF
Adapter for LC meter
Altoids L-tuner
30m QRP transceiver – Part 5
70cm bicycle antenna
I thought it would be nice to chat with some local radio amateurs on my way back home. I often talk to Adrian PA0RDA while driving home (by car) after work, using the local 70cm repeater PI2ZST, so I decided to prepare my bike for this UHF band. — more →
30m QRP transceiver – Part 4
PC6REC ATV station
Stereo to mono converter
CLog 0.10b released, introducing Cabrillo support
Kenwood interface for visually impaired radio amateurs
PoRG v2
- I included a built-in power supply, so no external power supply is needed anymore.
- The built-in power supply also prevents the PoRG from moving around your shack due to the forces of the connected cables.
- It has different connectors for hooking up the transceiver/receiver and antenna, making it more difficult to accidentally swap the cables, insert DC power into your radio and see smoke appearing through the vents of your rig.
30m QRP transceiver – Part 3
![[image]](http://www.pa3hcm.nl/wp-content/uploads/2014/04/20140402_230047-300x225.jpg)
Receiver part of the 30m QRP transceiver. From left to right: preselector, 1st mixer, IF filter, 2nd mixer, 8 MHz oscillator