The SmarTech 27Y5S is an Optimized Wideband Array (OWA) antenna, engineered with a native 50-ohm impedance.
A distinctive characteristic of OWA systems is a low VSWR curve across a very wide bandwidth. It is important to note that, in general, the radiation properties of an antenna may not remain uniform throughout the entire operating band. SmarTech's special modeling and optimization techniques ensure that the 27Y5S antenna maintains its typical performance characteristics up to the edge of the band.
These characteristics offer the notable advantage of not requiring the use of an antenna tuner, and make it very easy to use power amplifiers as they do not need adjustment during operations across the whole band.
| ELECTRICAL SPECIFICATIONS | |
| Gain | 15.22 dBi @22m (72ft) |
| Front/Back Ratio | 27.12dB @22m (72ft) |
| Impedance | 50 ohm |
| Matching method | Direct 50 ohm |
| Power rating | 5 kW |
| 3 dB Horizontal Beamwidth | 53.2° @22m (72ft) |
| PHYSYCAL AND MECHANICAL SPECIFICATIONS | |
| Weight | 14.8kg (32.60lb) |
| Boom length | 6m (19.7ft) |
| Longest element | 5.5m (18.1ft) |
| Rotation radius | 4.7m - (15.21ft) |
| Projected area [F=Flat - C=Cylindrical] | F = 2.76m² (23.7ft²) - C= 0.43m² (3.9ft²) |
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The antenna is engineered with high-quality materials and accurately dimensioned components, resulting in exceptional resilience even under significant wind loads.
Aluminum is a material with high resilience that can withstand significant loads and stresses without suffering from permanent deformation or structural failure. To ensure that an antenna structure maintains its resilience, it is important that the structure be designed to operate within the elastic mechanical field of the material. This means that the stresses placed on the antenna structure should not exceed the yield strength of its components and that the antenna can return to its original shape after being subjected to loads or stresses. By designing antennas with these principles in mind, SmarTech can ensure that all antenna parts remain resilient and maintain their structural integrity over time.
MATERIALS
The main structure of the antenna is made of aluminum alloy EN AW-6060/82 UNI9006 / 1 (Anticorodal 60/100), which gives greater durability against the most aggressive atmospheric agents (ice, water, UV rays, fine dust, acid rain), and a better resistance to the mechanical stresses of the wind.
SmarTech antennas are also supplied, depending on the models and specific mechanical requirements, with parts in Aisi 304 stainless steel (Austenitic Stainless Steel UNI / EN 10088) and parts in steel compliant with the resistance classes designated by the EN ISO 898-1 standard: 2013.
The antenna is designed to achieve maximum electrical efficiency and the best mechanical strength and durability, thanks to the quality of the materials used. However other options available if higher wind loading/survival is required.
It is also suitable for installation in particularly aggressive environments, such as high altitude mountainous areas or coastal areas with a highly corrosive atmosphere.
SmarTech antennas are made with materials and technological solutions that minimize parasitic resistances (which produce unwanted RF dissipations) along the entire radio frequency signal path.
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Ph. credits: Mr. Gianmarco F. - Cesena, ITALY | |
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It's really performing great. I used a balun and SWR is 1:1 without the need for any tuning and for a very wide bandwidth. | |
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Ph. credits: Mr. Francesco B. 1AT285 - Bari, ITALY | |
 Ph. credits: Mr. Ruud V. - NL |  Ph. credits: Mr. Warren S. - USA |
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Echo Kilo Dx Group Field Day, Sept. 2021 - GERMANY | |
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Ph. credits: Mr. Darek I. 1DRK01 - Predappio,ITALY | |
| ELECTRICAL SPECIFICATIONS | |
| Gain | 15.22dBi @22m (72ft) |
| Front/Back Ratio | 27.12dB @22m (72ft) |
| Impedance | 50 Ohm |
| Power rating | 5 kW |
| VSWR min. @50 ohm | 1.0:1 |
| Matching Method | Direct 50 ohm |
| 3 dB Horizontal Beamwidth | 53.2° @22m (72ft) |
| Stacked Distances | 6÷9m best 7.5m - (19.6.÷29.25ft) |
| 2 Stacked Gain | [7.5m/24,6ft Stacking Distance] 18.2dBi @12m (39.4ft) |
| 2 Stacked F/B | [7.5m/24,6ft Stacking Distance] 32.5dB @12m (39.4ft) |
| PHYSYCAL AND MECHANICAL SPECIFICATIONS | |
| Weight | 14.8kg (32.60lb) |
| Boom length | 6m (19.7ft) |
| Longest element | 5.5m (18.1ft) |
| Rotation radius | 4.7m - (15.21ft) |
| Projected area [F=Flat - C=Cylindrical] | F = 0.276m² (2.97ft²) - C= 0.43m² (4.63.9ft²) |