OK2HAZ – Michal Grygárek – Elektronika, radiotechnika, 3D tisk, CNC, opravy HAM radiostanic

OK0MF – 6m duplexer development and construction

Posted on 26.10.2015 by ok2haz — 1 Comment ↓

…This is a great band if you like having Mother Nature pull your chain… For the construction of the six-meter repeater OK0MF I got the task to solve the antenna filter / duplexer. We had not a duplexer for the Pokračuj ve čtení →

AVR Dragon – reverse engineering

Posted on 23.2.2015 by ok2haz — 3 Comments ↓

During developing you go into normal and abnormal situations. Well, during one of those abnormal ones I burned down my AVR Dragon programmer. I connected it to an equipment which had a ground potencial of around 50Vdc. So current went Pokračuj ve čtení →