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BIG SIGNAL 4BS-10
High-Performance Cubical Quad Antenna for 28 MHz / 10 Meters
High-Performance Cubical Quad Antenna for 28 MHz / 10 Meters
At BIG SIGNAL, we have developed a new generation of Cubical Quad antennas with full-wave elements, and the 4BS-10 represents one of our highest-performance solutions for the 28 MHz / 10-meter band.
With its 4 elements, it is designed for operators looking for a significant step up in gain, directivity, and weak-signal reception, while maintaining an efficient structure for the level of performance it delivers.
With its 4 elements, it is designed for operators looking for a significant step up in gain, directivity, and weak-signal reception, while maintaining an efficient structure for the level of performance it delivers.
Band: 28 MHz / 10 m
Configuration: Monoband Cubical Quad
Elements: 4 full-wave elements
Polarization: Horizontal
Recommended use: DX / contesting / weak signals / high-performance stations
Main feature: High gain and directivity with an optimized structure
Configuration: Monoband Cubical Quad
Elements: 4 full-wave elements
Polarization: Horizontal
Recommended use: DX / contesting / weak signals / high-performance stations
Main feature: High gain and directivity with an optimized structure
Why Choose the BIG SIGNAL 4BS-10?
• Four full-wave elements
The 4BS-10 uses full-wave loops specifically optimized for the 10-meter band, providing a highly efficient configuration for both transmitting and receiving.
The 4BS-10 uses full-wave loops specifically optimized for the 10-meter band, providing a highly efficient configuration for both transmitting and receiving.
• High gain with an efficient boom length
The Cubical Quad geometry provides a high level of gain and directivity without requiring an excessively long structure, offering an excellent balance between performance and overall dimensions.
The Cubical Quad geometry provides a high level of gain and directivity without requiring an excessively long structure, offering an excellent balance between performance and overall dimensions.
• Optimized weak-signal reception
Its closed-loop configuration can provide a favorable signal-to-noise ratio in the presence of certain types of electrical interference, an especially valuable advantage when listening for DX signals near the reception threshold.
Its closed-loop configuration can provide a favorable signal-to-noise ratio in the presence of certain types of electrical interference, an especially valuable advantage when listening for DX signals near the reception threshold.
• Design optimized through electromagnetic simulation
The geometry and spacing of its elements have been developed using electromagnetic modeling and simulation, seeking a precise balance between gain, radiation pattern, impedance matching, and rejection of unwanted signals.
The geometry and spacing of its elements have been developed using electromagnetic modeling and simulation, seeking a precise balance between gain, radiation pattern, impedance matching, and rejection of unwanted signals.
• Excellent side and rear rejection
Its radiation pattern is designed to concentrate the signal in the desired direction while providing significant rejection of signals arriving from the sides and rear, helping reduce interference and improve reception.
Its radiation pattern is designed to concentrate the signal in the desired direction while providing significant rejection of signals arriving from the sides and rear, helping reduce interference and improve reception.
• Designed for long-distance DX
The combination of gain, directivity, and the radiation characteristics of a Cubical Quad makes the 4BS-10 particularly well suited for long-distance DX communications on 28 MHz.
The combination of gain, directivity, and the radiation characteristics of a Cubical Quad makes the 4BS-10 particularly well suited for long-distance DX communications on 28 MHz.
• Performance of a high-level directional antenna
Its four full-wave elements provide performance comparable to full-size Yagis with a greater number of elements, while retaining the characteristic advantages of the Cubical Quad geometry.
Its four full-wave elements provide performance comparable to full-size Yagis with a greater number of elements, while retaining the characteristic advantages of the Cubical Quad geometry.
• Rugged construction for permanent installations
Built with materials selected to withstand continuous outdoor exposure, the 4BS-10 is engineered to provide mechanical stability and long-term durability in high-performance installations.
Built with materials selected to withstand continuous outdoor exposure, the 4BS-10 is engineered to provide mechanical stability and long-term durability in high-performance installations.
Designed for DX and Competitive Stations
On the 10-meter band, propagation openings can turn barely perceptible signals into intercontinental contacts. An antenna with gain, directivity, and good rejection outside the main lobe helps operators take better advantage of every one of those opportunities.
The BIG SIGNAL 4BS-10 has been used in stations focused on contesting and DX operation, where the ability to hear weak signals and concentrate energy in the desired direction is especially important.
Advantages of the BIG SIGNAL 4BS-10
• 4 full-wave elements optimized for 28 MHz.
• High gain and directivity for DX communications.
• Excellent performance for weak-signal reception.
• Significant side and rear rejection.
• Design optimized through electromagnetic simulation.
• Particularly well suited for DX, contesting, and high-performance stations.
• Rugged construction designed for permanent outdoor installations.
4 elements to make the difference on 10 meters.
The BIG SIGNAL 4BS-10 is developed for operators who want to seriously explore the potential of 28 MHz: four full-wave elements, high directivity, and a configuration designed for DX, contesting, and weak-signal reception.
Technical Specifications
Band: 28 MHz / 10 m
Elements: 4 full-wave elements
Gain: 10.34 dBi (free space)
Front-to-back ratio (F/B): 23.47 dB
Polarization: horizontal
-3 dB beamwidth: 55°
SWR: 1.1:1 – 1.5:1
Impedance: 50 Ohms
Maximum power: 5,000 W PEP
Boom length: 17.55 ft / 5.35 m
Turning radius: 10.76 ft / 3.28 m
Overall height: 8.20 ft / 2.50 m
Weight: 24.3 lb / 11 kg
Wind survival: > 93 mph / > 150 km/h
Wind load: 7.56 ft² / 0.702 m² | 123.9 lbf / 550.91 N | @ 74.6 mph / 120 km/h
Elements: 4 full-wave elements
Gain: 10.34 dBi (free space)
Front-to-back ratio (F/B): 23.47 dB
Polarization: horizontal
-3 dB beamwidth: 55°
SWR: 1.1:1 – 1.5:1
Impedance: 50 Ohms
Maximum power: 5,000 W PEP
Boom length: 17.55 ft / 5.35 m
Turning radius: 10.76 ft / 3.28 m
Overall height: 8.20 ft / 2.50 m
Weight: 24.3 lb / 11 kg
Wind survival: > 93 mph / > 150 km/h
Wind load: 7.56 ft² / 0.702 m² | 123.9 lbf / 550.91 N | @ 74.6 mph / 120 km/h
Construction and Materials
• Boom-to-mast plate
Heavy-duty 5.91 x 5.91 x 0.31 in / 150 x 150 x 8 mm plate, sized to provide a strong and stable connection between the boom and the mast mounting system.
Heavy-duty 5.91 x 5.91 x 0.31 in / 150 x 150 x 8 mm plate, sized to provide a strong and stable connection between the boom and the mast mounting system.
• Boom
Constructed from square 1.97 x 0.079 in / 50 x 2 mm tubing, providing the rigidity required to maintain the correct geometry of all four elements.
Constructed from square 1.97 x 0.079 in / 50 x 2 mm tubing, providing the rigidity required to maintain the correct geometry of all four elements.
• Spreader supports
Manufactured from 0.98 x 0.12 in / 25 x 3 mm angle profiles, forming the structural support system for the antenna elements.
Manufactured from 0.98 x 0.12 in / 25 x 3 mm angle profiles, forming the structural support system for the antenna elements.
• Fasteners and hardware
Made from W4 stainless steel, selected to provide high corrosion resistance and long-term durability under continuous outdoor exposure.
Made from W4 stainless steel, selected to provide high corrosion resistance and long-term durability under continuous outdoor exposure.
• Fiberglass system
Reinforced 0.55 x 0.28 in / 14 x 7 mm fiberglass tubing with a UV-protective coating, designed for permanent outdoor installations.
Reinforced 0.55 x 0.28 in / 14 x 7 mm fiberglass tubing with a UV-protective coating, designed for permanent outdoor installations.
• BIG SIGNAL Wire by Messi & Paoloni
Special copper wire with a polyethylene (PE) jacket, designed to provide excellent weather protection and high mechanical strength.
Special copper wire with a polyethylene (PE) jacket, designed to provide excellent weather protection and high mechanical strength.
• Feed system
Direct 50-ohm feed.
Direct 50-ohm feed.
Construction
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Reviews
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The purchase of the products is always made on request. We manufacture all products, so manufacturing times can be added. That is why the final price of the purchase, as the final price of the shipping costs will be confirmed in an email sent afterwards.
The form of payment will be made once the email is received, so at all times you can cancel the order informing us of the process.
I like cubical quad antennas and have made several. I installed a 4BS-10 on a homemade tilt tower at 52' and am very impressed with its performance on receive, as well as transmit. To camper it with a yagi is being unfair to the yagi. The construction of the antenna is strong enough, avoiding being too heavy. Great product!
Greg / KP4PK
Soy poseedor de una y solo puedo decir elogios sobre esta antena. Fácil montaje, liviana y muy potente en rx/tx. Las estaciones que contacto con ella dicen que sus señales son muy estables o apenas Qsb.
Le doy un 10/10. Gracias Fullwave man!!!