The 4-element Yagi 278Y4 represents a significant advancement in the development of the Yagi-Uda SmarTech 2.0 systems, characterized by a low-noise front-end and overall high-quality performance.
The antenna is directly fed with a 50 ohm cable, and does not suffer from efficiency losses and deterioration of characteristics over time, typical of gamma match systems with low-quality dielectrics (such as RG-8, RG-213...).

Its weight of 9 kg (20lb) makes it easy and fast to install. It can be mounted on rotors and supports for TV use, or on lightweight setups for temporary use, such as for portable use. It comes in a single package with a length of about 200 cm and includes an assembly manual with detailed descriptions and explanatory drawings with many details.

This antenna is specifically designed for use across the entire 27-28 MHz band, which allows it to maintain its characteristic performance almost unchanged over the entire useful band. The low SWR that can be observed even at the band extremes and the absence of low-quality matching systems give the 278Y4 high efficiency characteristics, allowing for the use of high power and making the use of power amplifiers safe and easy.


ELECTRICAL SPECIFICATIONS
Gain 14.06dBi @18m (59ft)
Front/Back Ratio 25.08dB @18m (79ft)
Impedance 50 ohm
Power rating 5 kW
3 dB Horizontal Beamwidth 63.8°
PHYSYCAL AND MECHANICAL SPECIFICATIONS
Weight 9.3kg (20lb)
Boom length 4m (13.12ft)
Longest element 5.50m (18ft)
Rotation radius 3.4m (11.2ft)
Projected area [F=Flat - C=Cylindrical] F = 0.63 m²(6.8 ft²) - C= 0.268m² (2.885 ft²)



SmarTech Yagi 4 el. 278Y4 27-28 MHz / 11-10mSmarTech Yagi 4 el. 278Y4 27-28 MHz / 11-10m




SmarTech Yagi 4 el. 278Y4 27-28 MHz / 11-10m



SmarTech Yagi 4 el. 278Y4 27-28 MHz / 11-10m



SmarTech Yagi 4 el. 278Y4 27-28 MHz / 11-10m



SmarTech Yagi 4 el. 278Y4 27-28 MHz / 11-10m



The 4-element 278Y4 is also very suitable for stack installations. For more information and for customized solutions, please contact the SmarTech Technical Division.



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.



SmarTech Antennas


The insulators blocks are in POLYPROPYLENE PPC 5660, a material resistant to considerable thermal excursions (from -20 ° C to + 130 ° C), with high breaking load (tensile strength 25Mpa), good resistance to abrasion and volume resistivity> 1018

The antenna is designed to achieve maximum electrical efficiency and the best mechanical strength and durability, thanks to the quality of the materials used.

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.






If shipping costs to your destination are not included during the ordering process, please contact us. We will send you a quotation for the fastest, safest and cheapest shipping solution.

ELECTRICAL SPECIFICATIONS
Gain 14.06dBi @18m (59ft)
Front/Back Ratio 25.08dB @18m (59ft)
Impedance 50 ohm
Power rating 5 kW
Matching Method Direct feed
3 dB Horizontal Beamwidth 63.8°
Stacked Distances 5÷8m (16.4÷26.2ft)
PHYSYCAL AND MECHANICAL SPECIFICATIONS
Weight 9.3kg (20lb)
Boom length 4m (13.12ft)
Longest element 5.5m (18ft)
Rotation radius 3.4m (11.2ft)
Projected area [F=Flat - C=Cylindrical]

F = 0.63 m²(6.8 ft²) - C= 0.268m² (2.885 ft²)

4 el. YAGI 27-28 MHz (278Y4)

  • Product Code: 278Y4
  • € 300.00