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BIG SIGNAL 6BS-70
6 full-wave elements for high-performance operation on 432 MHz / 70 cm
The BIG SIGNAL 6BS-70 is a 6-element directional Cubical Quad specifically developed for the 432 MHz / 70 cm band. Its design combines gain, directivity and an excellent signal-to-noise ratio in a compact and lightweight structure.
Its closed full-wave elements provide a different approach from conventional Yagi antennas, making the 6BS-70 particularly attractive for operators looking to improve station performance for terrestrial DX, SSB, digital modes, satellite communications and weak-signal work.
Band: 432 MHz / 70 cm
Type: monoband directional Cubical Quad
Elements: 6 closed full-wave loops
Key feature: high directivity in a compact format
Assembly: quick assembly with pre-assembled elements
Recommended use: DX / SSB / digital modes / satellites / weak-signal communications
Type: monoband directional Cubical Quad
Elements: 6 closed full-wave loops
Key feature: high directivity in a compact format
Assembly: quick assembly with pre-assembled elements
Recommended use: DX / SSB / digital modes / satellites / weak-signal communications
Why choose the BIG SIGNAL 6BS-70?
• 6 closed full-wave elements
The 6BS-70 uses full-wave loop elements specifically optimized for the 70 cm band, providing a different antenna architecture from the open elements commonly used in conventional Yagi designs.
The 6BS-70 uses full-wave loop elements specifically optimized for the 70 cm band, providing a different antenna architecture from the open elements commonly used in conventional Yagi designs.
• High performance from a compact boom
The Cubical Quad geometry provides an excellent balance of gain, directivity and boom length, delivering high directional performance without requiring an excessively long structure.
The Cubical Quad geometry provides an excellent balance of gain, directivity and boom length, delivering high directional performance without requiring an excessively long structure.
• Excellent signal-to-noise ratio
Its closed-element design, combined with a well-defined directional pattern, can help provide cleaner reception in the presence of certain types of electrical noise and interference—particularly valuable when working with signals close to the receiver's noise floor.
Its closed-element design, combined with a well-defined directional pattern, can help provide cleaner reception in the presence of certain types of electrical noise and interference—particularly valuable when working with signals close to the receiver's noise floor.
• High directivity and off-axis rejection
Its radiation pattern concentrates transmitted and received energy toward the desired direction, helping to reduce signals and interference arriving from other directions and improving overall station selectivity.
Its radiation pattern concentrates transmitted and received energy toward the desired direction, helping to reduce signals and interference arriving from other directions and improving overall station selectivity.
• An excellent choice for satellites and weak-signal work
The combination of gain, directivity and compact dimensions makes the 6BS-70 particularly attractive for satellite communications, terrestrial DX, SSB and digital weak-signal modes on 432 MHz.
The combination of gain, directivity and compact dimensions makes the 6BS-70 particularly attractive for satellite communications, terrestrial DX, SSB and digital weak-signal modes on 432 MHz.
• Favorable behavior with polarization variations
The characteristic geometry of a Cubical Quad can provide favorable performance when received signals experience polarization changes and fading, an interesting characteristic for certain satellite and terrestrial propagation conditions.
The characteristic geometry of a Cubical Quad can provide favorable performance when received signals experience polarization changes and fading, an interesting characteristic for certain satellite and terrestrial propagation conditions.
• Quick and easy assembly
The elements are supplied pre-assembled to simplify installation and reduce the time required to get the antenna ready for operation.
The elements are supplied pre-assembled to simplify installation and reduce the time required to get the antenna ready for operation.
A different approach from the traditional Yagi
The BIG SIGNAL 6BS-70 uses an architecture based on closed full-wave loops. The result is a compact directional antenna designed for operators looking for performance, selectivity and clean reception on the 70 cm band.
• 6 full-wave elements.
• Excellent gain-to-size ratio.
• High directivity and selectivity.
• Excellent signal-to-noise performance.
• Particularly well suited for DX and weak-signal work.
• Excellent choice for SSB, digital modes and satellites.
• Pre-assembled elements for easier installation.
• Excellent gain-to-size ratio.
• High directivity and selectivity.
• Excellent signal-to-noise performance.
• Particularly well suited for DX and weak-signal work.
• Excellent choice for SSB, digital modes and satellites.
• Pre-assembled elements for easier installation.
6 elements. Compact footprint. Designed to hear and reach farther.
BIG SIGNAL 6BS-70 – a full-wave directional Cubical Quad engineered to deliver gain, directivity and real-world performance on 432 MHz.
Technical Specifications
Frequency range: 430 ~ 440 MHz
Elements: 6
Gain: 12.75 dBi (free space)
F/B ratio: 23.00 dB
-3 dB beamwidth: 44°
SWR: 1.1:1 ~ 1.5:1
Maximum power: 2,000 W PEP
Boom length: 32.7 in (0.83 m)
Turning radius: 17.7 in (0.45 m)
Overall height: 6.9 in (0.175 m)
Weight: 2.43 lb (1.1 kg)
Wind survival: > 124 mph (200 km/h)
Wind load: 0.29 ft² (0.027 m²) | 4.80 lbf (21.35 N) | @ 74.6 mph (120 km/h)
Elements: 6
Gain: 12.75 dBi (free space)
F/B ratio: 23.00 dB
-3 dB beamwidth: 44°
SWR: 1.1:1 ~ 1.5:1
Maximum power: 2,000 W PEP
Boom length: 32.7 in (0.83 m)
Turning radius: 17.7 in (0.45 m)
Overall height: 6.9 in (0.175 m)
Weight: 2.43 lb (1.1 kg)
Wind survival: > 124 mph (200 km/h)
Wind load: 0.29 ft² (0.027 m²) | 4.80 lbf (21.35 N) | @ 74.6 mph (120 km/h)
12.75 dBi from just 32.7 inches of boom
The BIG SIGNAL 6BS-70 combines 6 long-spaced elements with 12.75 dBi gain, a 23 dB front-to-back ratio and a 44° -3 dB beamwidth, all in an antenna with a boom length of just 32.7 in (0.83 m).
Construction and Materials
• Mast mounting: clamp for masts up to 1.97 in (50 mm).
• Boom: 0.79 in square profile with 0.079 in wall thickness (20 x 2 mm).
• Elements: 0.31 x 0.16 in (8 x 4 mm) fiberglass tubing with UV-protective coating.
• Fasteners and hardware: W4 stainless steel.
• Cable: BIG SIGNAL Wire by Messi & Paolini, special copper wire with a polyethylene (PE) jacket for excellent weather protection and high mechanical strength.
• Feed connection: N-type connector.
• Boom: 0.79 in square profile with 0.079 in wall thickness (20 x 2 mm).
• Elements: 0.31 x 0.16 in (8 x 4 mm) fiberglass tubing with UV-protective coating.
• Fasteners and hardware: W4 stainless steel.
• Cable: BIG SIGNAL Wire by Messi & Paolini, special copper wire with a polyethylene (PE) jacket for excellent weather protection and high mechanical strength.
• Feed connection: N-type connector.
6 elements. 12.75 dBi. Just 32.7 inches of boom.
The BIG SIGNAL 6BS-70 delivers high directional performance from an exceptionally compact and lightweight structure, engineered to get more from your station across 430 ~ 440 MHz.
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