BIG SIGNAL 2BS-20
2-element full-wave Cubical Quad for DX on 14 MHz / 20 meters
The BIG SIGNAL 2BS-20 is a 2-element full-wave monoband directional antenna specifically developed for operators looking to get the most from the 14 MHz / 20-meter band while keeping the overall structure within manageable dimensions.
Its closed-loop configuration and horizontal polarization combine gain, directivity and an excellent signal-to-noise ratio, making it a particularly attractive alternative to conventional Yagi antennas for DX, contesting and weak-signal operation.
Band: 14 MHz / 20 meters
Type: monoband directional Cubical Quad
Elements: 2 full-wave loops
Polarization: horizontal
Gain: 7.4 dBi free space
F/B ratio: 18.01 dB
Turning radius: 13.71 ft (4.18 m)
Recommended use: DX / contesting / weak-signal / base stations
Why Choose the BIG SIGNAL 2BS-20?
• Two full-wave elements
The 2BS-20 uses two closed full-wave loops specifically optimized for 14 MHz. This architecture provides excellent electrical efficiency without relying on loading coils, traps or shortened radiating elements.
• 7.4 dBi from just 11.42 ft (3.48 m) of boom
One of the key strengths of the 2BS-20 is its excellent gain-to-boom-length ratio. Its two elements provide 7.4 dBi of free-space gain with a boom length of only 11.42 ft (3.48 m).
• Clean reception for weak signals
Its closed-loop geometry, combined with horizontal polarization and a directional radiation pattern, can help provide a favorable signal-to-noise ratio in the presence of certain types of electrical interference, particularly useful for stations located in urban environments.
• Designed for DX on 20 meters
The combination of gain, horizontal polarization and directivity is especially well suited for long-distance communications. Its radiation pattern helps concentrate transmitted and received energy toward the desired direction and make better use of propagation openings on 14 MHz.
• Strong performance at practical installation heights
Cubical Quad antennas are particularly attractive when very tall support structures are not available. The 2BS-20 is designed to provide an excellent balance of installation height, radiation angle and DX performance.
• Directivity and rear rejection
With an 18.01 dB front-to-back ratio, the antenna helps reduce signals and interference arriving from the rear, making it easier to copy weak stations in the desired direction.
• Only 13.71 ft (4.18 m) turning radius
Despite operating on the 20-meter band with full-wave elements, the 2BS-20 maintains a turning radius of only 13.71 ft (4.18 m), making installation easier on towers where rotational clearance is limited.
• Lightweight for a 20-meter directional antenna
At approximately 30.9 lb (14 kg), its construction is designed to provide mechanical strength without adding unnecessary load to the mast, tower or rotator system.
• Simple installation with no complex adjustments
Its mounting system is designed to simplify installation and allow quick commissioning, providing a dedicated 14 MHz solution for high-performance DX stations.
A Different Approach from the Traditional Yagi
The BIG SIGNAL 2BS-20 takes advantage of closed full-wave elements to deliver a dedicated DX antenna that combines gain, clean reception and manageable dimensions for the 20-meter band.
• 2 full-wave elements.
• 7.4 dBi free-space gain.
• 18.01 dB front-to-back ratio.
• Only 11.42 ft (3.48 m) of boom.
• Turning radius of just 13.71 ft (4.18 m).
• Favorable signal-to-noise performance.
• Specifically designed for DX on 20 meters.
Two Elements. Full-Wave Performance. Built for DX.
The BIG SIGNAL 2BS-20 combines 7.4 dBi of gain, full-wave elements and a manageable turning radius in a monoband antenna engineered to make the most of every propagation opening on 14 MHz.
Technical Specifications
Band: 14 MHz / 20 m
Elements: 2 full-wave elements
Gain: 7.4 dBi (free space)
F/B ratio: 18.01 dB
-3 dB beamwidth: 74°
Polarization: horizontal
SWR: 1.1:1 ~ 1.5:1
Impedance: 50 Ohms
Maximum power: 2,000 W PEP
Boom length: 11.42 ft (3.48 m)
Turning radius: 13.71 ft (4.18 m)
Overall height: 17.22 ft (5.25 m)
Weight: approximately 30.9 lb (14 kg)
Wind survival: > 93 mph (> 150 km/h)
Wind load: 10.32 ft² (0.959 m²) | 169.3 lbf (752.8 N) | @ 74.6 mph (120 km/h)
7.4 dBi with just 11.42 ft of boom
The BIG SIGNAL 2BS-20 combines two closed full-wave elements with 7.4 dBi of gain, an 18.01 dB front-to-back ratio and a turning radius of only 13.71 ft (4.18 m), delivering an excellent balance of size and performance for the 20-meter band.
Construction and Materials
• Boom-to-mast plate
Heavy-duty 9.84 x 5.91 x 0.31 in (250 x 150 x 8 mm) structural plate, sized to provide a strong and secure connection between the boom and mast.
• Boom
Square 1.97 in diameter x 0.079 in wall (50 x 2 mm) tubing, designed to provide structural rigidity while keeping the overall antenna weight under control.
• Spreader support system
Constructed from 1.18 x 0.20 in (30 x 5 mm) angle profiles, designed to provide a rigid and stable base for the fiberglass system supporting the Quad elements.
• Fasteners and hardware
Made from W4 stainless steel, selected to provide mechanical strength and long-term durability in permanent outdoor installations.
• Fiberglass system
Custom-made fiberglass tubing with a half-round (semicircular) cross-section rather than conventional round tubing, specifically designed to fit the surface of the spreader supports. Reinforced with fiberglass fabric and UV protection for increased mechanical strength and long-term outdoor durability.
• BIG SIGNAL Wire by Messi & Paoloni
Special copper wire with a polyethylene (PE) jacket, selected to provide excellent weather protection and high mechanical strength.
• Feed system
Equipped with a high-quality current balun for connection to a 50-ohm coaxial feed line.
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.
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