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395,87 € (479,00 € TAX Inc.)
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At BIG SIGNAL we have the latest generation in the design and development of Cubical Quad antennas for the 27 MHz / 11 m band.

Why choose the 3BS-11 antenna versus a traditional Yagui?

· Full wavelength antenna in 11 meters, achieving maximum performance and efficiency.
· More gain in less boom length than a traditional Yagi of the same size.
· Very low noise: Being a closed antenna, it will allow you to attenuate the QRN and improve the reception of weak signals in the band.
· Very low radiation angle even installed at low heights: This allows us to make fewer jumps until we reach the DX, resulting in a stronger signal on the other side.
· Less influence to the polarization crossing. This translates to less QSB or signal loss when receiving signals in Vertical or Horizontal Polarization.
· High selectivity. Excellent suppression of lateral and rear lobes.
· Just over 2,8 meters of turning radius, ideal for installations with reduced space.
· Very robust construction for extreme durability.

The best directional antenna option for the DX in urban environments, in times when QRM in cities is increasingly high, a closed antenna is the ultimate solution to improve the DX reception.

BIG SIGNAL - The ultimate performance in DX


· Band: 27 MHz.
· Active elements: 3.
· Gain: 9,34 dBi. (Free space).
· F/B: 27,07 dB.
· Polarization: Horizontal.
· SWR: 1,1:1 ~ 1,5:1.
· Impedance: 50 Ohm.
· Power rating: 5.000 W.
· Boom length: 3,92 m. / 12,86 ft.
· Turning radius: 2,80 m. / 8,95 ft.
· Total height: 2,75 m. / 9,02 ft.
· Weight: 9 Kg. / 19,84 lb
· Wind survival: > 150 Km/h. / 100 mph

Construction details:

· Boom to Mast: 150 x 150 x 6 mm.
· Boom size: 50 x 2 mm / 2,00 in
· Spiders: Angled design of 20 x 3 mm and stabilizing element to the boom of 3 mm.
· Hardware: Stainless Steel, W4 grade.
· Spreaders Arms: 14 x 7 mm reinforced fiber cloth and protective layer for the sun.
· Cable: BIG SIGNAL - Wire. Special copper cable with polyethylene (PE) sheath for excellent weather protection and mechanical resistance.
· Feeding: Direct to 50 Ohm coax.


  1. 19SugarDelta188-Andy (19SugarDelta188)17 Mar, 2024 - 12:16

    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.

    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.

    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"

  2. Adrian ()10 Jun, 2023 - 12:42

    Great antenna. Well made. Bandwidth and SWR exactly as advertised. Has been in the air nearly 12 months with no issues whatsoever. Recommended.

  3. Angus (35NB001)23 Mar, 2023 - 17:50

    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 ??

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