YO3HJV

Sometimes in the lab there is need to monitor the power parameters during some period of time and put it on a nice graph. Because I couldn...

 For the next project (IRIS) I need two small filters, one for VHF and one for UHF.  The goal is to get rid of the out of band signals. On m...

There are not many features missing from the Xiegu G90... At least, when is about hardware, in the firmware, there is another story. When I ...

 There is a time when an Arduino is too big and has useless features. An ATMEGA328p on a breadboard, using internal clock at 8 MHz with a co...

 I use to listen to CW to train the reception but not always I am not so willing to use the headphones. Sometime, late at night when I am wo...