BIG SIGNAL 2BS-10
Compact 2-element Cubical Quad for DX on 28 MHz
The BIG SIGNAL 2BS-10 is a 2-element full-wave monoband directional Cubical Quad specifically developed for operators looking for gain, directivity and clean reception on the 28 MHz / 10-meter band.
Its two-element configuration provides an excellent balance of performance and compact dimensions, making it an especially attractive option for DX stations that do not have the space required for a larger directional antenna.
Band: 28 MHz / 10 m
Configuration: monoband Cubical Quad
Elements: 2 full-wave elements
Polarization: horizontal or vertical, selectable during installation
Recommended use: DX / weak-signal / space-limited stations
Key feature: excellent performance-to-size ratio
Why Choose the BIG SIGNAL 2BS-10?
• Two full-wave elements
The 2BS-10 uses closed full-wave loops, one of the defining characteristics of the Cubical Quad design and the foundation of its efficient performance on the 10-meter band.
• High performance from only two elements
Its driven-element and reflector configuration provides gain and directivity from a compact structure, offering an excellent balance of performance and required installation space.
• A compact alternative to larger directional antennas
The Cubical Quad geometry delivers a very attractive level of directional performance without requiring a large number of elements or an excessively long boom.
• Clean reception and favorable signal-to-noise performance
Its closed-loop configuration can provide favorable behavior in the presence of certain types of electrical noise, helping improve reception of weak DX signals in urban environments.
• Directivity designed for DX
Its directional pattern concentrates energy toward the desired heading while providing rejection of signals arriving from other directions, particularly useful on crowded bands.
• Favorable behavior with signal variations
Cubical Quad geometry can provide favorable performance when received signals experience certain polarization changes and fading, helping maintain more stable reception under some DX conditions.
• Compact and rugged
With compact dimensions for a full-wave directional antenna, the 2BS-10 is designed for installations where turning radius and available space are important considerations.
A Compact Way to Step Into Directional DX
The 10-meter band can produce spectacular propagation openings and signals from virtually anywhere in the world. A directional antenna allows operators to take better advantage of those conditions by improving the ability to hear, select and work DX stations.
The BIG SIGNAL 2BS-10 is aimed at operators ready to move from a vertical, dipole or omnidirectional antenna to a directional, compact solution specifically optimized for 28 MHz.
BIG SIGNAL 2BS-10 Advantages
• 2 full-wave elements dedicated to 28 MHz.
• Excellent balance of gain, directivity and size.
• Closed-loop design with favorable signal-to-noise performance.
• Directivity especially useful for DX and weak-signal work.
• Compact turning radius compared with larger directional antennas.
• Construction designed for permanent outdoor installations.
Two Elements. Full-Wave Performance. Built for DX.
The BIG SIGNAL 2BS-10 combines compact dimensions with the advantages of a full-wave Cubical Quad, offering an especially attractive solution for operators looking for gain, directivity and clean reception on the 10-meter band.
Technical Specifications
Band: 28.0 - 29.0 MHz
Elements: 2
Gain: 7.49 dBi (free space)
F/B ratio: 22.02 dB
-3 dB beamwidth: 74°
Polarization: horizontal or vertical, selectable during installation
SWR: 1.1:1 – 1.5:1
Impedance: 50 Ohms
Maximum power: 2,000 W PEP
Boom length: 5.81 ft (1.77 m)
Turning radius: 7.19 ft (2.19 m)
Overall height: 9.02 ft (2.75 m)
Weight: 13.2 lb (6 kg)
Wind survival: > 93 mph (> 150 km/h)
Wind load: 3.24 ft² (0.301 m²) | 53.2 lbf (236.52 N) | @ 74.6 mph (120 km/h)
Construction and Materials
• Boom-to-mast plate
Heavy-duty 5.91 x 5.91 x 0.24 in (150 x 150 x 6 mm) plate, designed to provide a strong connection between the antenna structure and the mast.
• Boom
Square 1.97 in diameter x 0.079 in wall (50 x 2 mm) boom with an overall length of 5.81 ft (1.77 m).
• Reinforced spreader supports
Constructed from 0.79 x 0.12 in (25 x 3 mm) angle profiles.
• Fasteners and hardware
Made from W4 stainless steel, providing corrosion resistance and long-term durability in outdoor installations.
• Fiberglass system
Reinforced 0.55 x 0.28 in (14 x 7 mm) fiberglass tubing with a UV-protective coating, designed for long-term exposure to outdoor conditions.
• BIG SIGNAL Wire by Messi & Palioni
Special copper wire with a polyethylene (PE) jacket, developed to provide excellent weather protection and high mechanical strength.
• Feed system
Equipped with a high-quality current balun.
7.49 dBi from just 5.81 ft of boom.
The BIG SIGNAL 2BS-10 combines 7.49 dBi of gain, a 22.02 dB F/B ratio and a 74° beamwidth in a structure with a boom length of only 5.81 ft (1.77 m), with the option to select horizontal or vertical polarization during installation.
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.
ES
EN
I bought a Two-Element Quad for 10m last year from Big Signal Antennas and was just this month (06/24) able to set it up.
The building was quite easy, when it's finally understood that the hose clamps needed to be in a specific position to hold the spiders.
Maybe that could be pointed out stronger in the manual.
And maybe it's better that people know that the antenna is tuned for the 10m SSB/ Phone section, not for the CW/Digimode area.
But the result is just awesome!
I set everything up, went to the radio, and really thought i've forgot to plug in the coax.
There was absolutely no noise- ZERO! QRM.
I couldn't believe my eyes, because on my verticals or even on a horizontal dipole I always had some static and QRM around S 2-3.
But the static really was at S0!
I have always read that quads are low noise antennas, but now I understand.
The performance is great. In just a couple of days working with the antenna i just reached five new DXCC in the pacific, and Australia isn't a rare bird anymore on FT8, now it is a rather common sight.
Thank you very much for constructing so well working, easy to set up antennas.
este año despues del paron de propagacion con esta antena de dos elementos he gozado como un chico pequeño manejable pequeña en tamaño pero resultona en su cometido pedro ea2jc