Projects for the amateur radio engineer. Hardware, software, electronics and test equipment for the amateur community.
I have used a simple dipole for 14MHz temporarily. This antenna was not much as quiet as the Deltaloop but much simpler to install and fix, compared to the loop that has been my standard antenna for 14MHz for years. The noise in the receiver when using the dipole was beyond words. Thus I changed…
Foreword When I built the semi automatic tuner two years ago I did not take into account some possible shortcomings the device could suffer from. The first of these I noticed when I exceeded power levels of about more or less than 50 watts. In some cases there was rf incoupling leading the microcontroller to…
This article is outdated! Please read about the new version of the antenna tuner here! People frequently reading my blog know that I love to improve the things presented here. This is revision one of my semi-automatic antenna tuner for QRP. I found that the reading of the SWR value on the LCD is a…
This article is outdated! Please read about the new version of the antenna tuner here! After I had finished my 5 band multibander for QRP SSB operation I had 2 choices becoming QRV on the hf bands – either to build up something like an antenna farm (which would have caused severe problems with my…