In the world of modern amateur radio, where every second counts and efficient use of space is paramount, the triplexer has become an almost essential device. It allows a single multi-band antenna (such as a Tribander) to function as if it were three independent monoband antennas. What does it look

In modern amateur radio, station automation is not just about convenience; it is, above all, about equipment safety and the key to achieving better results in contests. At SO9I Engineering, we are proud to present MOAS II (Mother of All Switches) – a system that redefines the way you manage

Welcome to our new blog! At SO9I Engineering, we have been providing solutions for years that help radio amateurs build efficient and safe stations. In our first post, we want to introduce a product that serves as the foundation for any advanced SO2R (Single Operator Two Radios) or Multi-Operator setup