4O3A Signature

4O3A designs and manufactures high-quality accessories and TCP/IP controlled solutions for your shack. Our flagship Genius line of products are designed specifically to eliminate station complexity, reduces cost and improve operator efficiency. Created by world-class contesters and engineered for reliability, they can push your contest scores higher.

Our new PowerGenius XL RF amplifier is exceptionally clean, quiet and delivers full legal-limit power at 100% duty cycles. The only fully SO2R-capable amplifier it has 70dB nominal isolation between exciter inputs. Like our entire Genius product lineup, it is monitored and automated through an integral Ethernet connection.

4O3A’s field-proven high-power (4500W) 3 and 5-pole bandpass filters offer exceptional out-of-band rejection (as high as 75dB) that enables full-duplex HF operations.

Products developed by the 4O3A R&D team find their way in from the field and then out to production, only after they are polished and perfected by actual use – not the other way around. And we don’t stop there, all Genius products are field upgradable and incrementally improved.

Inovative solutions and high quality products

Our products offer inovative solutions and high quallity products aimed at hardcore contesting. They are designed organically, as solutions for pushing the scores higher, and higher, every year. Prototypes are first implemented on the 4O3A Station, tested in a live enviorment, prefected and then sent to production. They are aimed to be high quallity, easy to use, smart, and robust.

Our latest, “Shack in the Cloud” line of products all have TCP/IP capabilities, so everything can be automated to the maximum, and controlled by an application with a click. We support Windows and Android operating systems at the moment.