Availability
4O3A Amateur Radio Equipment & Genius Line Systems
A leader in high-performance amateur radio equipment, 4O3A designs and manufactures high-quality antenna switches, filters, headsets and other radio gear engineered...
A leader in high-performance amateur radio equipment, 4O3A designs and manufactures high-quality antenna switches, filters, headsets and other radio gear engineered for reliable operation and flexibility. The company’s flagship Genius line includes amplifiers and tuners that offer seamless control and automation between multiple antennas and a single or several radios, reducing station complexity and improving operating efficiency. DX Engineering carries a range of 4O3A products that can integrate effortlessly into both local and remote station installations, making them ideal for casual operators and competitive contesters...
A leader in high-performance amateur radio equipment, 4O3A designs and manufactures high-quality antenna switches, filters, headsets and other radio gear engineered for reliable operation and flexibility. The company’s flagship Genius line includes amplifiers and tuners that offer seamless control and automation between multiple antennas and a single or several radios, reducing station complexity and improving operating efficiency. DX Engineering carries a range of 4O3A products that can integrate effortlessly into both local and remote station installations, making them ideal for casual operators and competitive contesters alike. Each of the company’s offerings reflects a deep understanding of real-world radio use, whether in the shack, by remote or in the field!
Headphones, Noise Canceling, Wireless (Bluetooth) or Wired, 750 mAh Li-Ion Rechargeable Battery, Zippered Bag Incl., Each
Part Number: O3A-4O-NC-HP
Cannot be shipped Internationally
Cannot be shipped Internationally
Headset, NC-1, Noise Canceling Over-Ear Stereo Headphones & Boom Mic Condenser Element, Bluetooth or Wired w/Optional Xcvr Adapter, Rechargeable, Set
Part Number: O3A-4O-NC-1
Cannot be shipped Internationally
Cannot be shipped Internationally
Filter, Bandpass, XL Series, 10 Meter Band, 4,500W PEP, UHF Female SO-239, Fan Cooled, Each
Part Number: O3A-4O-BPFXL010P
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Filter, Bandpass, XL Series, 20 Meter Band, 4,500W PEP, UHF Female SO-239, Fan Cooled, Each
Part Number: O3A-4O-BPFXL020P
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Filter, Bandpass, XL Series, 15 Meter Band, 4,500W PEP, UHF Female SO-239, Fan Cooled, Each
Part Number: O3A-4O-BPFXL015P
Not Yet Reviewed
Estimated Ship Date: Nov 5, 2026 if ordered today
Estimated Ship Date: Nov 5, 2026 if ordered today
Filter, Bandpass, XL Series, 40 Meter Band, 4,500W PEP, UHF Female SO-239, Fan Cooled, Each
Part Number: O3A-4O-BPFXL040P
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Filter, Bandpass, XL Series, 160 Meter Band, 4,500W PEP, UHF Female SO-239, Fan Cooled, Each
Part Number: O3A-4O-BPFXL160P
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Filter, Bandpass, XL Series, 80 Meter Band, 4,500W PEP, UHF Female SO-239, Fan Cooled, Each
Part Number: O3A-4O-BPFXL080P
Estimated Ship Date: Nov 5, 2026 if ordered today
Estimated Ship Date: Nov 5, 2026 if ordered today
Filter, Bandpass, XL Series, 17 Meter Band, 4,500W PEP, UHF Female SO-239, Fan Cooled, Each
Part Number: O3A-4O-BPFXL017P
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Filter, Bandpass, XL Series, 30 Meter Band, 4,500W PEP, UHF Female SO-239, Fan Cooled, Each
Part Number: O3A-4O-BPFXL030P
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Filter, Bandpass, XL Series, 12 Meter Band, 4,500W PEP, UHF Female SO-239, Fan Cooled, Each
Part Number: O3A-4O-BPFXL012P
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Filter, Bandpass, XL Series, 40 Meter Band, 4,500W PEP, Type-N Female, Fan Cooled, Each
Part Number: O3A-4O-BPFXL040N
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Filter, Bandpass, XL Series, 10 Meter Band, 4,500W PEP, Type-N Female, Fan Cooled, Each
Part Number: O3A-4O-BPFXL010N
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Filter, Bandpass, XL Series, 6 Meter Band, 4,500W PEP, Type-N Female, Fan Cooled, Each
Part Number: O3A-4O-BPFXL006N
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Filter, Bandpass, XL Series, 20 Meter Band, 4,500W PEP, Type-N Female, Fan Cooled, Each
Part Number: O3A-4O-BPFXL020N
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Filter, Bandpass, XL Series, 15 Meter Band, 4,500W PEP, Type-N Female, Fan Cooled, Each
Part Number: O3A-4O-BPFXL015N
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Filter, Bandpass, XL Series, 80 Meter Band, 4,500W PEP, Type-N Female, Fan Cooled, Each
Part Number: O3A-4O-BPFXL080N
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Filter, Bandpass, XL Series, 6 Meter Band, 4,500W PEP, UHF Female SO-239, Fan Cooled, Each
Part Number: O3A-4O-BPFXL006P
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Filter, Bandpass, XL Series, 12 Meter Band, 4,500W PEP, Type-N Female, Fan Cooled, Each
Part Number: O3A-4O-BPFXL012N
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Filter, Bandpass, XL Series, 17 Meter Band, 4,500W PEP, Type-N Female, Fan Cooled, Each
Part Number: O3A-4O-BPFXL017N
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Filter, Bandpass, XL Series, 30 Meter Band, 4,500W PEP, Type-N Female, Fan Cooled, Each
Part Number: O3A-4O-BPFXL030N
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Filter, Bandpass, XL Series, 160 Meter Band, 4,500W PEP, Type-N Female, Fan Cooled, Each
Part Number: O3A-4O-BPFXL160N
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow