4O3A develops and manufactures high-quality station accessories and advanced TCP/IP-controlled solutions that bring professional performance to your amateur radio shack. The innovative Genius line is engineered to simplify complex station setups, reduce equipment costs, and improve overall operating efficiency.
Designed by world-class contesters and built for maximum reliability, 4O3A products deliver outstanding automation, seamless system integration, and superior RF performance. Whether you’re optimizing a high-power contest station or upgrading your remote-operation capabilities, these solutions help you operate faster, smarter, and more effectively—ultimately boosting your contest scores and on-air results.
First deliveries of 4O3A products are scheduled for Q1, 2026. Contact us with any questions and reservations.
4O3A
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4O3A, Power Amplifiers
Power Genius XL 2kW HF/6m LDMOS Amplifier
PowerGenius XL is a solid-state amplifier delivering up to 2000 W SSB or up to 1500W in RTTY and FT-8 at a duty cycle of 50%. With dual LDMOS devices, Ethernet control, and full remote operation, it’s built for modern, automated high-performance stations.
SKU: PGXL -
4O3A, Antenna Tuners
Tuner Genius XL 2kW HF/6m Automatic Antenna Tuner
Tuner Genius XL is a high-power 1.8–54 MHz automatic antenna tuner designed for stations running up to 2 kW PEP. It that delivers fast, accurate matching, wide SWR range support, deep FlexRadio ecosystem integration, and full LAN-based remote operation for modern contest and DX stations.
SKU: TGXL -
4O3A, Antenna Switches, Remote Control
4O3A Antenna Genius 8×2
Antenna Genius 8×2 is a high-power, SO2R-capable antenna switch that routes up to eight HF/6 m antennas to two independent radios or amplifier chains. With 3 kW capability, Ethernet control, automatic band tracking, and tight FlexRadio integration, it delivers intelligent, fast, and reliable antenna management for contest, DX, and remote superstations.
SKU: 4O-AG8x2 -
4O3A, Antenna Switches, Remote Control
4O3A Antenna Genius 8×1
Antenna Genius 8×1 is a high-power, network-controlled antenna switch that lets you route up to eight HF/6 m antennas to a single radio or amplifier chain. With 3 kW capability, fast Ethernet switching, automatic band tracking, and seamless FlexRadio integration, it delivers intelligent antenna management for contest, DX, and fully remote stations.
SKU: 4O-AG8x1 -
4O3A, Audio & Sound, Headsets and Microphones, Remote Control, Transceiver Accessories
4O3A NC-1 Noise Cancelling Headset w/BT
4O3A, Audio & Sound, Headsets and Microphones, Remote Control, Transceiver Accessories4O3A NC-1 Noise Cancelling Headset w/BT
The NC-1 from 4O3A is a professional-grade noise-cancelling contest and DX headset engineered to deliver clear, fatigue-free audio in the harshest operating environments. With advanced ambient-noise suppression, a high-intelligibility microphone, and rugged construction, it keeps your focus on the signals that matter—whether in the shack or on a remote contest site.
SKU: 4O-NC1 -
4O3A, Audio & Sound, Headsets and Microphones, Remote Control, Transceiver Accessories
4O3A MC-1 Boom Mic for NC-1 Headset
4O3A, Audio & Sound, Headsets and Microphones, Remote Control, Transceiver Accessories4O3A MC-1 Boom Mic for NC-1 Headset
The NC-1 from 4O3A is a professional-grade noise-cancelling contest and DX headset engineered to deliver clear, fatigue-free audio in the harshest operating environments. With advanced ambient-noise suppression, a high-intelligibility microphone, and rugged construction, it keeps your focus on the signals that matter—whether in the shack or on a remote contest site.
SKU: 4O-MC1
