In a walnut orchard 39 years ago: The beginning of the space age in the Bulgarian Academy of Sciences army Place: Walnut orchard near the village of Botevo, Tundzha municipality, Yambol region. Time: May 24, 1987, exactly 39 years ago. Acting person: me – a rookie officer… lieutenant engineer. The […]
Who invented the radio? Popov, Marconi or Tesla? Radio: A puzzle pieced together by many geniuses In the history of science, few questions are as electrifying as the one about the “father of radio.” Depending on where you studied, the answer is different. But if we put aside political biases, […]
Wandering through the jungle of fast charging protocols: Why “powerful” is not always “fast”. Once upon a time there were two wires and the most difficult part of charging was not to confuse plus with minus. Charging batteries today has nothing to do with that – along with plus and […]
FNIRSI LCR-ST2 Master Class: A Practical Guide to Precise Measurements Unlock the full potential of the FNIRSI LCR-ST2 Smart Tweezers with my practical tips and experience. After going through the ins and outs of DeepVNA together, FTX-1F and FTDX10, it’s time to pay attention to a tool that has quickly […]
April 18 – The Day the World Connects Without Borders Every year on April 18, millions of people around the world tune in their transceivers to celebrate World Amateur Radio Day. This is not just a date on the calendar, but the anniversary of the founding of the International Amateur […]
DeepVNA Master Class: Your Practical Guide to the Vector Analyzer Introduction: When a Transceiver Is Not Enough Every radio amateur knows – a good antenna is half a transceiver. But how do we know if it is really working at its maximum, especially when we are in the field in […]
Why are we called “HAM”? From the legends of Harvard to the first Bulgarian HAM Have you ever wondered why radio amateurs are called “HAM” (which means “ham” in English)? It sounds a bit funny, doesn’t it? After all, what does a smoked ham have to do with antennas and […]
How to set up a hand telegraph key: old-school master tips For many radio amateurs, the hand telegraph key (the telegraph manipulator, affectionately called a “pedestrian” key or “hammer”) is a symbol of true radio amateurism. But to make broadcasting a pleasure, not a wrist torture, the key must be […]
Frequencies, Antennas and a Little Stubbornness: Practical Amateur Radio Frequencies and Bands for Bulgaria Have you ever opened the official band plan to check exactly where the center of activity was for SOTA/POTA, and after five minutes of reading sub-sections and definitions you forget why you turned on the station […]