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· Estimated delivery time: ON REQUEST

Prices 21 % less for customers outside of EU (World Wide Shipping)

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574,38 € (695,00 € TAX Inc.)
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At BIG SIGNAL we have the latest generation in the design and development of cubic antennas for the 21 MHz / 15 m band.

Why choose a BIG SIGNAL 2BS-15 Quad antenna versus a traditional Yagui?

· Full wavelength elements: reaching maximum performance and efficiency.
· Very low noise: being a closed quad antenna with horizontal polarization, it will allow you to attenuate QRN and urban noise, improving the reception quality of weak signals in the band.
· More gain in less boom length than a traditional Yagi of the same size.
· Very low radiation angle even installed at a low height: this allows us to make fewer jumps until we reach the DX, which results in a stronger signal on the other side. For this reason, it is known that quad antennas are the first to open and the last to close propagation.
· High selectivity: Extraordinary side and back lobe suppression, further reducing unwanted noise in the rejection directions.
· Less crossover or polarization influence: This translates into less QSB and signal stability when receiving DX stations.
· Just over 2 meters of turning radius. Ideal in small spaces, no antenna is capable of offering this performance and turning in such a small space.
· Super robust construction for extreme durability, forget about maintenance.
· Very light weight compared to aluminum Yagis with similar characteristics.
· Simple assembly and Plug&Play: it does not require any adjustment once installed.

Because a Quad antenna is the best directional antenna for DX due to its performance and benefits. In addition, in times where the noise in cities is increasingly high, a cubical quad antenna is the definitive solution for the practice of DX with the maximum performance guaranteed.

BIG SIGNAL - The ultimate performance 


· Band: 21 MHz.
· Active elements: 2.
· Gain: 7,4 dBi. (free space).
· F/B: 22,02 dB.

· Polarization: Horizontal.
· 3 dB Horizontal Beamwidth: 74º.
· SWR: 1,1:1 ~ 1,5:1.
· Impedance: 50 Ohm.
· Power rating: 2.000 W. PEP 
· Boom length: 2,33 m. / 11,41 ft
· Turning radius: 3,12 m. / 13,713 ft
· Total height: 2,94 m. / 17,224 ft
· Weight: ¿? Kg / lb
· Wind survival: > 160 Km/h. / 100 mph
· Wind load: 
0,617 m2 | 483,9 N | @ 120 km/h.

Construction details:

· Boom to Mast: 250 x 150 x 8 mm.
· Boom size: 50 x 2 mm / 2,00 in
· Spiders: Angled design of 30 x 5 mm and stabilizing element to the boom of 4 mm.
· Hardware: Stainless Steel, W4 grade.

· Spreaders Arms: Fiberglass especially molded and designed to our needs, half-round for a perfect adaptation to the surface of our crossbar, 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: High Quality current balun.


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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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3 element 21 MHz (9,10 dBi - 25,80 dB)
895,00 €

Prices 21 % less for customers outside of EU (World Wide Shipping)


4 element 21 MHz (10,37 dBi - 25,47 dB)
1290,01 €

Prices 21 % less for customers outside of EU (World Wide Shipping)