BIG SIGNAL 3BS-10
3-element directional Cubical Quad for DX on 28 MHz / 10 meters
The BIG SIGNAL 3BS-10 is a 3-element full-wave directional Cubical Quad specifically designed for high-performance operation on the 28 MHz / 10-meter band. It is especially well suited for DX operators looking to combine gain, directivity, favorable signal-to-noise performance and compact dimensions.
Its Cubical Quad geometry delivers excellent directional performance using closed full-wave elements, making it an especially attractive alternative to traditional Yagi antennas when high performance and a compact turning radius are important.
Band: 28 MHz / 10 m
Type: monoband directional Cubical Quad
Elements: 3 full-wave elements
Polarization: horizontal
Primary use: DX / long-distance communications
Turning radius: just over 9 ft (2.84 m)
Design: directional closed-loop architecture
Installation: straightforward assembly with no post-installation tuning required
Why Choose a Cubical Quad for 10 Meters?
• Full-wave elements
The 3BS-10 uses closed full-wave loops, one of the defining characteristics of Cubical Quad antennas and the foundation of their high efficiency and strong DX performance.
• High gain from a compact boom
Its geometry delivers high directional performance without requiring an excessively long structure, providing an excellent balance of gain, physical dimensions and turning radius.
• Clean reception and favorable signal-to-noise performance
The closed elements can provide particularly clean reception in the presence of certain types of electrical noise and QRN. Combined with the antenna's directivity, this can improve signal-to-noise performance and make weak DX stations easier to copy.
• Radiation pattern optimized for DX
Cubical Quad antennas are especially appreciated for their performance at low radiation angles, an attractive characteristic for long-distance communications on 10 meters when installation height and terrain conditions are favorable.
• High directivity and rejection of unwanted signals
Its directional pattern provides strong side and rear rejection, helping reduce signals and interference arriving from directions other than the desired heading.
• Favorable behavior with polarization variations
Cubical Quad geometry can be less sensitive to certain changes in received-signal polarization, helping provide more stable reception with reduced QSB effects under some propagation conditions.
• Just over 9 ft of turning radius
One of the key advantages of the 3BS-10 is the relationship between performance and the space required to rotate it, making it a particularly attractive choice for stations with limited available space.
• Lightweight and rugged structure
Its construction combines carefully selected materials to create an antenna that is strong yet relatively lightweight compared with conventional directional structures offering similar performance.
• Plug-and-play assembly
Designed for easy installation and commissioning, the antenna is supplied for straightforward assembly with no electrical adjustments required after proper installation.
An Antenna Built for DX
• 3 full-wave elements.
• High directional performance on 28 MHz.
• Excellent gain-to-boom-length ratio.
• Favorable signal-to-noise performance in reception.
• High directivity with strong side/rear rejection.
• Turning radius of just over 9 ft (2.84 m).
• Lightweight, rugged construction designed for outdoor use.
• Specifically engineered for DX on the 10-meter band.
When 10 Meters Opens, You Want to Make Every dB Count.
BIG SIGNAL 3BS-10 – a directional Cubical Quad designed for operators looking for gain, directivity, clean reception and serious DX performance on 28 MHz.
Technical Specifications
Band: 28 MHz / 10 m
Elements: 3 full-wave elements
Gain: 9.18 dBi (free space)
F/B ratio: 30.90 dB
Polarization: horizontal
-3 dB beamwidth: 61°
SWR: 1.1:1 ~ 1.5:1
Impedance: 50 Ohms
Maximum power: 5,000 W PEP
Boom length: 13.19 ft (4.02 m)
Turning radius: 9.32 ft (2.84 m)
Overall height: 8.20 ft (2.50 m)
Weight: 19.8 lb (9 kg)
Wind survival: > 93 mph (> 150 km/h)
Wind load: 5.73 ft² (0.532 m²) | 93.9 lbf (417.62 N) | @ 74.6 mph (120 km/h)
Performance and Dimensions
• 9.18 dBi free-space gain
High directional performance from only three full-wave elements.
• 30.90 dB front-to-back ratio
Excellent rejection of signals arriving from behind the antenna, especially useful for reducing interference and improving selectivity during DX operation.
• Only 9.32 ft (2.84 m) turning radius
An excellent balance of directional performance and required installation space, particularly attractive where a larger conventional directional antenna would be difficult to install.
• Up to 5,000 W PEP
Designed for high-power stations with a direct 50-ohm feed system.
Construction and Materials
Boom-to-mast plate: 5.91 x 5.91 x 0.31 in (150 x 150 x 8 mm)
Boom: round 1.97 in diameter x 0.079 in wall (50 x 2 mm) tubing
Spreader supports: 0.98 x 0.12 in (25 x 3 mm) angle profile
Fasteners and hardware: W4 stainless steel
Fiberglass system: reinforced 0.55 x 0.28 in (14 x 7 mm) fiberglass tubing with UV-protective coating
Cable: BIG SIGNAL Wire by Messi & Paliono, special copper wire with a polyethylene (PE) jacket for excellent weather protection and high mechanical strength
Feed system: direct 50-ohm feed
Built for High-Performance Permanent Installations
The combination of a 1.97 in (50 mm) boom, W4 stainless-steel hardware, reinforced fiberglass and polyethylene-jacketed wire provides a rugged structure designed for long-term outdoor operation.
9.18 dBi, 30.90 dB F/B and Only 9.32 ft of Turning Radius.
BIG SIGNAL 3BS-10 – high-level DX performance from a 3-element Cubical Quad specifically engineered for 28 MHz / 10 meters.
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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