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 3BS-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 3.8 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: 3. · Gain: 9,10 dBi (free space). · F/B: 25,80 dB. · 3 dB Horizontal Beamwidth: 62º. ·Polarization: Horizontal. · SWR: 1,1:1 ~ 1,5:1. · Impedance: 50 Ohm. · Power rating: 5.000 W. PEP · Boom length: 5,50 m. / 18,04 ft · Turning radius: 3,85 m. / 12,631 ft ·Total height: 3,75 m. / 12,30 ft · Weight: Kg / lb ·Wind survival: > 160 Km/h. / 100 mph
· Boom to Mast: 250 x 150 x 8 mm ·Boom size: 80 x 2 mm / 2,75 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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