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BIG SIGNAL 3BS-11
3 Full-Wave Quad Elements to Take 27 MHz DX to the Next Level
The BIG SIGNAL 3BS-11 is a directional 3-element full-wave Quad antenna, specifically developed for operators seeking high performance on the 27 MHz / 11-Meter Band.
Its reflector, driven element, and director configuration provides increased gain and directivity compared with a 2-element design while maintaining compact dimensions for an antenna in this performance class. The result is an antenna specifically engineered for DX, weak-signal operation, and crowded band conditions.
Band: 27 MHz / 11-Meter Band
Configuration: 3-Element Quad
Elements: Full-wave closed-loop elements
Element Layout: Reflector + Driven Element + Director
Type: Directional Monoband Antenna
Polarization: Horizontal
Recommended Use: DX / Long-Distance / Weak-Signal Operation
Configuration: 3-Element Quad
Elements: Full-wave closed-loop elements
Element Layout: Reflector + Driven Element + Director
Type: Directional Monoband Antenna
Polarization: Horizontal
Recommended Use: DX / Long-Distance / Weak-Signal Operation
What Does a Third Element Add?
• Increased Gain and Directivity
Adding a director further concentrates the radiation pattern toward the desired direction, increasing gain and providing a more focused pattern for serious DX operation.
Adding a director further concentrates the radiation pattern toward the desired direction, increasing gain and providing a more focused pattern for serious DX operation.
• 3 Full-Wave Quad Elements
The reflector, driven element, and director all use full-wave closed loops, taking advantage of the inherent characteristics of Quad geometry on 27 MHz.
The reflector, driven element, and director all use full-wave closed loops, taking advantage of the inherent characteristics of Quad geometry on 27 MHz.
• High Performance with a Compact Boom
One of the key advantages of the Quad design is its excellent balance of gain, element count, and boom length, delivering strong performance without requiring an excessively long structure.
One of the key advantages of the Quad design is its excellent balance of gain, element count, and boom length, delivering strong performance without requiring an excessively long structure.
• Excellent Signal-to-Noise Ratio
Its high directivity and rejection of signals outside the main lobe can improve reception when DX signals arrive just above the noise floor.
Its high directivity and rejection of signals outside the main lobe can improve reception when DX signals arrive just above the noise floor.
• Improved Rejection of Unwanted Signals
A more selective radiation pattern allows you to use your rotor not only to peak the desired signal, but also to reduce interference arriving from unwanted directions.
A more selective radiation pattern allows you to use your rotor not only to peak the desired signal, but also to reduce interference arriving from unwanted directions.
• Reduced QSB Under Certain Conditions
The geometry of the Quad elements can provide favorable behavior under certain DX signal polarization changes, helping deliver more stable reception.
The geometry of the Quad elements can provide favorable behavior under certain DX signal polarization changes, helping deliver more stable reception.
It’s Not Just About Hearing Stronger Signals. It’s About Hearing Better.
On a crowded band like 27 MHz, the advantage of a directional antenna goes beyond gain alone. Being able to focus reception toward the DX station while rejecting signals arriving from other directions can be just as important as the antenna’s gain itself.
Why Choose a Quad Over a Yagi?
Yagi and Quad antennas represent two different approaches to directional antenna design. While a conventional Yagi typically uses open elements, the 3BS-11 uses three full-wave closed-loop elements.
This geometry provides an especially attractive combination of gain, directivity, efficiency, and signal-to-noise performance, while maintaining a highly competitive boom length for its performance class.
Engineered for Serious DX
• Compact Turning Radius
Just over 2.8 m / 9.19 ft, making installation easier on towers where available space is an important consideration.
Just over 2.8 m / 9.19 ft, making installation easier on towers where available space is an important consideration.
• Heavy-Duty Construction
Built with carefully selected materials to provide excellent mechanical strength and long-term durability in permanent outdoor installations.
Built with carefully selected materials to provide excellent mechanical strength and long-term durability in permanent outdoor installations.
• No Unnecessary Complications
A dedicated monoband antenna engineered around one very specific goal: extracting maximum performance from the 27 MHz band.
A dedicated monoband antenna engineered around one very specific goal: extracting maximum performance from the 27 MHz band.
When DX Gets Tough, Directivity Makes the Difference.
The BIG SIGNAL 3BS-11 is designed for operators who want more than simply putting a strong signal on the air. They want gain, rejection, selectivity, and the ability to pull out that DX signal hiding between the noise and other stations on the band. Three full-wave Quad elements with one goal: getting more out of every band opening.
BIG SIGNAL 3BS-11 – More Directivity. More Control. More DX.
Technical Specifications
Band: 27 MHz / 11-Meter Band
Elements: 3 full-wave Quad elements
Gain: 9.34 dBi (Free Space)
F/B Ratio: 27.07 dB
Polarization: Horizontal
SWR: 1.1:1 – 1.5:1
Impedance: 50 Ω
Maximum Power: 5,000 W PEP
Boom Length: 3.92 m / 12.86 ft
Turning Radius: 2.80 m / 9.19 ft
Total Height: 2.75 m / 9.02 ft
Weight: 9 kg / 19.84 lb
Wind Survival: > 150 km/h / 93 mph
Wind Load: 0.532 m² / 5.73 ft² | 417.62 N / 93.89 lbf | @ 120 km/h / 74.6 mph
Elements: 3 full-wave Quad elements
Gain: 9.34 dBi (Free Space)
F/B Ratio: 27.07 dB
Polarization: Horizontal
SWR: 1.1:1 – 1.5:1
Impedance: 50 Ω
Maximum Power: 5,000 W PEP
Boom Length: 3.92 m / 12.86 ft
Turning Radius: 2.80 m / 9.19 ft
Total Height: 2.75 m / 9.02 ft
Weight: 9 kg / 19.84 lb
Wind Survival: > 150 km/h / 93 mph
Wind Load: 0.532 m² / 5.73 ft² | 417.62 N / 93.89 lbf | @ 120 km/h / 74.6 mph
Performance at a Glance
• 9.34 dBi gain with 3 elements
• 27.07 dB front-to-back ratio
• SWR between 1.1:1 and 1.5:1
• Up to 5,000 W PEP
• Turning radius of only 2.80 m / 9.19 ft
• 27.07 dB front-to-back ratio
• SWR between 1.1:1 and 1.5:1
• Up to 5,000 W PEP
• Turning radius of only 2.80 m / 9.19 ft
9.34 dBi Gain and 27.07 dB F/B
The BIG SIGNAL 3BS-11 combines three full-wave Quad elements to deliver high gain and directivity along with excellent rear rejection. A configuration specifically designed for DX and weak-signal reception on 27 MHz.
Construction & Materials
• Boom-to-Mast Plate
Heavy-duty 150 × 150 × 8 mm / 5.91 × 5.91 × 0.31 in mounting plate, designed to provide a strong and secure connection between the boom and mast.
Heavy-duty 150 × 150 × 8 mm / 5.91 × 5.91 × 0.31 in mounting plate, designed to provide a strong and secure connection between the boom and mast.
• Boom
Round 50 × 2 mm / 1.97 × 0.08 in tubing, engineered to provide excellent structural rigidity while keeping overall weight under control.
Round 50 × 2 mm / 1.97 × 0.08 in tubing, engineered to provide excellent structural rigidity while keeping overall weight under control.
• Spider System
Constructed from 20 × 3 mm / 0.79 × 0.12 in angle sections, providing strong and secure support for all three Quad elements.
Constructed from 20 × 3 mm / 0.79 × 0.12 in angle sections, providing strong and secure support for all three Quad elements.
• Hardware
Made from W4-grade stainless steel for excellent mechanical strength, corrosion resistance, and long-term durability in outdoor installations.
Made from W4-grade stainless steel for excellent mechanical strength, corrosion resistance, and long-term durability in outdoor installations.
• Fiberglass Spreader System
14 × 7 mm / 0.55 × 0.28 in reinforced fiberglass tubing with a UV-protective coating, designed for long-term permanent outdoor installations.
14 × 7 mm / 0.55 × 0.28 in reinforced fiberglass tubing with a UV-protective coating, designed for long-term permanent outdoor installations.
• BIG SIGNAL Wire
Special copper wire with a polyethylene (PE) jacket, selected to provide excellent weather protection and high mechanical durability for long-term outdoor use.
Special copper wire with a polyethylene (PE) jacket, selected to provide excellent weather protection and high mechanical durability for long-term outdoor use.
• RF Feed
Direct 50 Ω feed terminals.
Direct 50 Ω feed terminals.
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.
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Llevo unos meses con la 3 elementos y la verdad sorprendido por su rendimiento. Gran antena.
Que dire.... je passe d'une antenne Yagi 2 elements à cette fameuse antenne Cubical Quad 3 elements de chez "Big Signal", c'est juste énorme la différence, des reports très conséquents à 5/9+10 à 20dB à plus de 10000km voir plus.
Les plus :
Elle est très silencieuse en réception et me permet d'écouter des stations très QRP.
En émission, quand on appuie sur le micro, tout de suite ça répond de l'autre coté sans problème.
Le boom n'est pas très grand, cela est excellent quand on a pas beaucoup de place comme moi.
Elle est très légère, seulement 9Kg !!!
Les moins :
Il faut renforcer les colliers pour attacher les cannes sur les croisillons, aussi non ça bouge et ca ne serre pas assez.
Conclusion :
Je l'a conseille vivement, le prix est très attractif et le montage est très simple et les perfs juste énormes.
Merci à " Big Signal " et surement à très vite pour un autre achat.
Chris, 14AT276
Hi all
The 3BS-11 Cubical Quad Antenna stands out as a high-performance solution tailored specifically for the 11 meter band. Boasting exceptional performance, this antenna has garnered considerable attention and acclaim within the amateur radio community.
Design and Build Quality:
Crafted with precision engineering, the 3BS-11 Cubical Quad Antenna exhibits a robust and durable construction. Its three-element design is optimized for efficiency and effectiveness within the 11 meter band. The materials used in its construction are of high quality, ensuring longevity and reliability even in adverse weather conditions.
Performance:
The standout feature of the 3BS-11 antenna is its outstanding performance. Users consistently report superior signal reception and transmission capabilities, resulting in clear and reliable communication. The antenna's cubical quad design contributes to its exceptional gain, allowing for extended range and improved signal strength compared to alternative antenna configurations. Whether for casual communication or DX (long-distance) contacts, the 3BS-11 excels in delivering consistent and reliable performance.
Ease of Installation:
Despite its advanced performance capabilities, the 3BS-11 Cubical Quad Antenna is relatively straightforward to install. With clear instructions and minimal assembly required, users can quickly set up the antenna and begin enjoying its benefits. Its manageable size and weight make it suitable for a variety of mounting configurations, further enhancing its versatility and ease of use.
Value for Money:
While the 3BS-11 Cubical Quad Antenna may represent a moderate investment, its exceptional performance and durability justify its price tag. Users seeking reliable long-term performance will find that the antenna offers excellent value for money, providing years of enhanced communication capabilities without compromising on quality or reliability.
Conclusion:
In summary, the 3BS-11 Cubical Quad Antenna for the 11 meter band stands as a testament to superior design, performance, and reliability. With its outstanding signal reception, durable construction, and ease of installation, it represents an excellent choice for amateur radio enthusiasts looking to optimize their communication capabilities. Whether for casual use or serious DX pursuits, the 3BS-11 delivers exceptional results, making it a highly recommended option within the amateur radio community.
Thank you to "Big Signal"
73's
19SD188-Andy
Great antenna. Well made. Bandwidth and SWR exactly as advertised. Has been in the air nearly 12 months with no issues whatsoever. Recommended.
Amazing antenna...even when touching the ground still +10dB into Mexico!
Would definitely buy another one...maybe 4 Element next.
.already had the 2 Element which works amazing also.
Thank you Big Signal Antennas ??