Some of the 3B8M team putting up the 40m 4-square in the water 👍
- 📷 courtesy 4O3A
- 📷 courtesy 4O3A
November 21, 2024 at 3:08 PM
Some of the 3B8M team putting up the 40m 4-square in the water 👍
- 📷 courtesy 4O3A
- 📷 courtesy 4O3A
July 23, 2025 at 4:04 PM
M7CCZ: A Happy 4O3A Signature Customer!
Thrilled with his Power Genius XL amplifier and Tuner Genius XL antenna tuner!
Discover more: 4o3a.com
Thrilled with his Power Genius XL amplifier and Tuner Genius XL antenna tuner!
Discover more: 4o3a.com
April 3, 2025 at 12:01 PM
M7CCZ: A Happy 4O3A Signature Customer!
Thrilled with his Power Genius XL amplifier and Tuner Genius XL antenna tuner!
Discover more: 4o3a.com
Thrilled with his Power Genius XL amplifier and Tuner Genius XL antenna tuner!
Discover more: 4o3a.com
🎧 The 4O3A NC-1 is a premium contesting headset — engineered by operators, for operators.
When we couldn’t find the perfect headset for the 4O3A station, we built our own.
Crystal-clear audio. Superior comfort. Designed for serious contesters.
🔗 Learn more: 4o3a.com/headset-nc1-...
When we couldn’t find the perfect headset for the 4O3A station, we built our own.
Crystal-clear audio. Superior comfort. Designed for serious contesters.
🔗 Learn more: 4o3a.com/headset-nc1-...
June 25, 2025 at 11:38 AM
🎧 The 4O3A NC-1 is a premium contesting headset — engineered by operators, for operators.
When we couldn’t find the perfect headset for the 4O3A station, we built our own.
Crystal-clear audio. Superior comfort. Designed for serious contesters.
🔗 Learn more: 4o3a.com/headset-nc1-...
When we couldn’t find the perfect headset for the 4O3A station, we built our own.
Crystal-clear audio. Superior comfort. Designed for serious contesters.
🔗 Learn more: 4o3a.com/headset-nc1-...
4O3A Signature 🟢
The Tuner XL features an advanced engineering approach to tuner development, resulting in the highest quality hardware and software solutions.
For more information, visit: 4o3a.com/tuner-genius
The Tuner XL features an advanced engineering approach to tuner development, resulting in the highest quality hardware and software solutions.
For more information, visit: 4o3a.com/tuner-genius
December 22, 2024 at 6:19 PM
4O3A Signature 🟢
The Tuner XL features an advanced engineering approach to tuner development, resulting in the highest quality hardware and software solutions.
For more information, visit: 4o3a.com/tuner-genius
The Tuner XL features an advanced engineering approach to tuner development, resulting in the highest quality hardware and software solutions.
For more information, visit: 4o3a.com/tuner-genius
4O3A Antenna Genius – The ultimate smart antenna switch, connecting up to 8 antennas to 2 radios. Ideal for SO2R, multi-operator contesting, or maximizing your dual RX transceiver.
🔗 Learn more: 4o3a.com/antenna-geni...
🔗 Learn more: 4o3a.com/antenna-geni...
September 16, 2025 at 1:17 PM
4O3A Antenna Genius – The ultimate smart antenna switch, connecting up to 8 antennas to 2 radios. Ideal for SO2R, multi-operator contesting, or maximizing your dual RX transceiver.
🔗 Learn more: 4o3a.com/antenna-geni...
🔗 Learn more: 4o3a.com/antenna-geni...
4O3A delivers high-end amateur radio gear built for contesters, DXers, and serious operators. From the Genius line of amps, tuners, and antenna systems to powerful filters, switches and more — everything works seamlessly together to boost your station’s performance.
🚀 4o3a.com
🚀 4o3a.com
September 21, 2025 at 11:03 PM
4O3A delivers high-end amateur radio gear built for contesters, DXers, and serious operators. From the Genius line of amps, tuners, and antenna systems to powerful filters, switches and more — everything works seamlessly together to boost your station’s performance.
🚀 4o3a.com
🚀 4o3a.com
4O3A Signature
The PowerGenius XL is a state-of-the-art RF amplifier with a 100% ICAS duty cycle, delivering the legal limit of 1500W ICAS across 1.8–54 MHz. It’s the only amplifier fully capable of SO2R operation, making it a top choice for serious operators
📖 Learn more: 4o3a.com/power-genius...
The PowerGenius XL is a state-of-the-art RF amplifier with a 100% ICAS duty cycle, delivering the legal limit of 1500W ICAS across 1.8–54 MHz. It’s the only amplifier fully capable of SO2R operation, making it a top choice for serious operators
📖 Learn more: 4o3a.com/power-genius...
January 11, 2025 at 6:03 PM
4O3A Signature
The PowerGenius XL is a state-of-the-art RF amplifier with a 100% ICAS duty cycle, delivering the legal limit of 1500W ICAS across 1.8–54 MHz. It’s the only amplifier fully capable of SO2R operation, making it a top choice for serious operators
📖 Learn more: 4o3a.com/power-genius...
The PowerGenius XL is a state-of-the-art RF amplifier with a 100% ICAS duty cycle, delivering the legal limit of 1500W ICAS across 1.8–54 MHz. It’s the only amplifier fully capable of SO2R operation, making it a top choice for serious operators
📖 Learn more: 4o3a.com/power-genius...
4O3A Signature 📍
The PS3000RX Power Splitter is designed to distribute power between one, two, or three antennas, or combine signals from two or three antennas. It offers versatile connectivity for optimal performance in various configurations.
For more information, visit: 4o3a.com/power-splitt...
The PS3000RX Power Splitter is designed to distribute power between one, two, or three antennas, or combine signals from two or three antennas. It offers versatile connectivity for optimal performance in various configurations.
For more information, visit: 4o3a.com/power-splitt...
November 27, 2024 at 2:10 PM
4O3A Signature 📍
The PS3000RX Power Splitter is designed to distribute power between one, two, or three antennas, or combine signals from two or three antennas. It offers versatile connectivity for optimal performance in various configurations.
For more information, visit: 4o3a.com/power-splitt...
The PS3000RX Power Splitter is designed to distribute power between one, two, or three antennas, or combine signals from two or three antennas. It offers versatile connectivity for optimal performance in various configurations.
For more information, visit: 4o3a.com/power-splitt...
4O3A – Say goodbye to lightning worries!
Meet the world’s first fully automated radio station protector. It continuously monitors your station and safely grounds all antennas during thunderstorms and other hazards—no manual intervention needed.
🔗 Learn more: 4o3a.com/grounding-an...
Meet the world’s first fully automated radio station protector. It continuously monitors your station and safely grounds all antennas during thunderstorms and other hazards—no manual intervention needed.
🔗 Learn more: 4o3a.com/grounding-an...
July 21, 2025 at 8:21 PM
4O3A – Say goodbye to lightning worries!
Meet the world’s first fully automated radio station protector. It continuously monitors your station and safely grounds all antennas during thunderstorms and other hazards—no manual intervention needed.
🔗 Learn more: 4o3a.com/grounding-an...
Meet the world’s first fully automated radio station protector. It continuously monitors your station and safely grounds all antennas during thunderstorms and other hazards—no manual intervention needed.
🔗 Learn more: 4o3a.com/grounding-an...
Guide to Amateur Radio Amplifiers 2026: Part 4, 4O3A Power Genius XL Amplifiers
4O3A produces amateur radio equipment that’s built to perform, built to last, and built for hams looking to seriously upgrade their capabilities. Case in point—the company’s solid-state Power Genius Amplifiers. They…
4O3A produces amateur radio equipment that’s built to perform, built to last, and built for hams looking to seriously upgrade their capabilities. Case in point—the company’s solid-state Power Genius Amplifiers. They…
Guide to Amateur Radio Amplifiers 2026: Part 4, 4O3A Power Genius XL Amplifiers
4O3A produces amateur radio equipment that’s built to perform, built to last, and built for hams looking to seriously upgrade their capabilities. Case in point—the company’s solid-state Power Genius Amplifiers. They deliver 1,500W-plus of output across the 160-6M bands using dual NXP MRF1K50H LDMOS transistors, each rated for 1.5 kW. Users can expect high headroom, low IMD, clean signal output, and a host of other benefits.
www.nerfd.net
July 23, 2026 at 6:00 PM
Guide to Amateur Radio Amplifiers 2026: Part 4, 4O3A Power Genius XL Amplifiers
4O3A produces amateur radio equipment that’s built to perform, built to last, and built for hams looking to seriously upgrade their capabilities. Case in point—the company’s solid-state Power Genius Amplifiers. They…
4O3A produces amateur radio equipment that’s built to perform, built to last, and built for hams looking to seriously upgrade their capabilities. Case in point—the company’s solid-state Power Genius Amplifiers. They…
The 4O3A NC-1 is a premium headset built specifically for contesting. Unable to find the perfect headset for our 4O3A station, we decided to design our own.
🔗 Learn more: 4o3a.com/headset-nc1-...
🔗 Learn more: 4o3a.com/headset-nc1-...
February 18, 2025 at 12:10 AM
The 4O3A NC-1 is a premium headset built specifically for contesting. Unable to find the perfect headset for our 4O3A station, we decided to design our own.
🔗 Learn more: 4o3a.com/headset-nc1-...
🔗 Learn more: 4o3a.com/headset-nc1-...
Need clean legal-limit power for DX pileups and contest weekends?
The #4O3A Power Genius XL delivers up to 2 kW, seamless integration with #FlexRadio, and true SO2R—broadcast-quality performance when it matters!
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#HamRadio #SDR #DX #SO2R #HF #RadioSport
The #4O3A Power Genius XL delivers up to 2 kW, seamless integration with #FlexRadio, and true SO2R—broadcast-quality performance when it matters!
buff.ly/H8Av1Nc
#HamRadio #SDR #DX #SO2R #HF #RadioSport
June 16, 2026 at 6:54 AM
Need clean legal-limit power for DX pileups and contest weekends?
The #4O3A Power Genius XL delivers up to 2 kW, seamless integration with #FlexRadio, and true SO2R—broadcast-quality performance when it matters!
buff.ly/H8Av1Nc
#HamRadio #SDR #DX #SO2R #HF #RadioSport
The #4O3A Power Genius XL delivers up to 2 kW, seamless integration with #FlexRadio, and true SO2R—broadcast-quality performance when it matters!
buff.ly/H8Av1Nc
#HamRadio #SDR #DX #SO2R #HF #RadioSport
Power to break through! PGXL is available in two versions: 3-WAY for 1 radio + 3 antennas, or SO2R for 2 radios + 2 antennas.
Learn more: buff.ly/vRkTx3R
#PGXL #FlexRadio #4O3A #HamRadio #AmateurRadio #DX #Contesting #SO2R #HF #6m #CQWPX
Learn more: buff.ly/vRkTx3R
#PGXL #FlexRadio #4O3A #HamRadio #AmateurRadio #DX #Contesting #SO2R #HF #6m #CQWPX
March 22, 2026 at 3:49 PM
Power to break through! PGXL is available in two versions: 3-WAY for 1 radio + 3 antennas, or SO2R for 2 radios + 2 antennas.
Learn more: buff.ly/vRkTx3R
#PGXL #FlexRadio #4O3A #HamRadio #AmateurRadio #DX #Contesting #SO2R #HF #6m #CQWPX
Learn more: buff.ly/vRkTx3R
#PGXL #FlexRadio #4O3A #HamRadio #AmateurRadio #DX #Contesting #SO2R #HF #6m #CQWPX
Need clean legal-limit power for DX pileups and contest weekends?
The #4O3A Power Genius XL delivers up to 2 kW, seamless integration with #FlexRadio, and true SO2R—broadcast-quality performance when it matters!
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#HamRadio #SDR #DX #SO2R #HF #RadioSport
The #4O3A Power Genius XL delivers up to 2 kW, seamless integration with #FlexRadio, and true SO2R—broadcast-quality performance when it matters!
buff.ly/DebzMKI
#HamRadio #SDR #DX #SO2R #HF #RadioSport
March 15, 2026 at 7:54 AM
Need clean legal-limit power for DX pileups and contest weekends?
The #4O3A Power Genius XL delivers up to 2 kW, seamless integration with #FlexRadio, and true SO2R—broadcast-quality performance when it matters!
buff.ly/DebzMKI
#HamRadio #SDR #DX #SO2R #HF #RadioSport
The #4O3A Power Genius XL delivers up to 2 kW, seamless integration with #FlexRadio, and true SO2R—broadcast-quality performance when it matters!
buff.ly/DebzMKI
#HamRadio #SDR #DX #SO2R #HF #RadioSport
Get a FREE 4O3A headset with the purchase PGXL or TGXL. Last chance this weekend, offer ends February 28th!
Check out the Genius line here:
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#4O3A #PowerGeniusXL #Amateurradio #HamRadio #Radiosport #DX #QRO
Check out the Genius line here:
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#4O3A #PowerGeniusXL #Amateurradio #HamRadio #Radiosport #DX #QRO
February 27, 2026 at 3:49 PM
Get a FREE 4O3A headset with the purchase PGXL or TGXL. Last chance this weekend, offer ends February 28th!
Check out the Genius line here:
buff.ly/pTnpjtS
#4O3A #PowerGeniusXL #Amateurradio #HamRadio #Radiosport #DX #QRO
Check out the Genius line here:
buff.ly/pTnpjtS
#4O3A #PowerGeniusXL #Amateurradio #HamRadio #Radiosport #DX #QRO
Pileup welcomes the 4O3A Genius Line.
The Power Genius XL, Tuner Genius XL, and additional Genius series products are now available.
Offer: purchases of 2,000 EUR+ in 4O3A products include a FREE NC-1 headset with MC-1 boom mic.
pileupdx.com/4o3a
#4O3A #PowerGeniusXL #HamRadio #Hamr #Radiosport #DX
The Power Genius XL, Tuner Genius XL, and additional Genius series products are now available.
Offer: purchases of 2,000 EUR+ in 4O3A products include a FREE NC-1 headset with MC-1 boom mic.
pileupdx.com/4o3a
#4O3A #PowerGeniusXL #HamRadio #Hamr #Radiosport #DX
December 6, 2025 at 10:57 AM
Pileup welcomes the 4O3A Genius Line.
The Power Genius XL, Tuner Genius XL, and additional Genius series products are now available.
Offer: purchases of 2,000 EUR+ in 4O3A products include a FREE NC-1 headset with MC-1 boom mic.
pileupdx.com/4o3a
#4O3A #PowerGeniusXL #HamRadio #Hamr #Radiosport #DX
The Power Genius XL, Tuner Genius XL, and additional Genius series products are now available.
Offer: purchases of 2,000 EUR+ in 4O3A products include a FREE NC-1 headset with MC-1 boom mic.
pileupdx.com/4o3a
#4O3A #PowerGeniusXL #HamRadio #Hamr #Radiosport #DX
May 1, 2026 at 1:47 PM