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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.
Being in the TOP of the BIG GUN stations in the 15-meter band means owning our BIG SIGNAL 4BS-15 Cubical Quad antenna!
Why choose a BIG SIGNAL 4BS-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.
· 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
Specifications:
· Band: 21 MHz.
· Active elements: 4.
· Gain: 10,37 dBi.
· F/B: 25,47 dB.
· Polarization: Horizontal.
· Beamwidth: 56º
· SWR: 1,1:1 ~ 1,5:1.
· Impedance: 50 Ohm.
· Power rating: 5.000 W. PEP
· Boom length: 7,30 m. / 23,62 ft
· Turning radius: 4,50 m. / 14,76 ft
· Total height: 3,75 m. / 12,30 ft
· Weight: Kg / lb
· Wind survival: > 160 Km/h. / 100 mph
· Wind load: 1,584 | 1243,4 N | @120 km/h
Construction details:
· Boom to Mast: 250 x 150 x 8 mm.
· Boom size: 80 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: Direct to 50 Ohm.
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