Looking for high-performance on both 11 and 10m bands?
Look no further than the SmarTech 5 el. Yagi-Uda 278Y5L, designed to deliver exceptional performance.
This antenna is the outcome of a rigorous process of numerical optimization applied to both electrical and mechanical design, resulting in a true masterpiece of technology.
Its radiation characteristics make it a top-performing war machine, perfect for long-distance DX and highly competitive events like international contests.



SmarTech Antenna Radiator




ELECTRICAL SPECIFICATIONS
Gain 15.67dBi @27.500 MHz @22m (72.2ft)
15.89dBi @28.000 MHz @22m (72.2ft)
15.90dBi @28.500 MHz @22m (72.2ft)
Front/Back Ratio 28.01dB @27.500 MHz @22m (72.2ft)
24.22dB @28.000 MHz @22m (72.2ft)
21.22dB @28.500 MHz @22m (72.2ft)
Impedance 50 ohm
Power rating 5 kW
Matching method Direct feed
3 dB Horizontal Beamwidth 52° @22m (72.2ft)
PHYSYCAL AND MECHANICAL SPECIFICATIONS
Weight 17.7kg (39lb)
Boom length 8m (26.2ft)
Longest element 5.50m (18ft)
Rotation radius 4.7m (15.21ft)
Projected area [F=Flat - C=Cylindrical] F = 0.49m² (4.94 ft²) - C= 0.4m² (4.3ft²)


The antenna's design undergoes a meticulous analysis of the effects of each mechanical component from the numerical modeling phase onwards, ensuring a precise match between the estimated radiation characteristics and the actual measured values. This methodology guarantees optimal antenna performance, making the 278Y5L a must-have for any serious enthusiast.



SmarTech Yagi 5 el. 278Y5L 27-28 MHz / 11-10mSmarTech Yagi 5 el. 278Y5L 27-28 MHz / 11-10m


SmarTech Yagi 5 el. 278Y5L 27-28 MHz / 11-10mSmarTech Yagi 5 el. 278Y5L 27-28 MHz / 11-10m


SmarTech Yagi 5 el. 278Y5L 27-28 MHz / 11-10mSmarTech Yagi 5 el. 278Y5L 27-28 MHz / 11-10m


The 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, gives the 278Y5L high efficiency characteristics, allowing for the use of high power and ensuring the safe and easy use of power amplifiers.




SmarTech Yagi 5 el. 278Y5L 27-28 MHz / 11-10m



SmarTech Yagi 5 el. 278Y5L 27-28 MHz / 11-10m



SmarTech Yagi 5 el. 278Y5L 27-28 MHz / 11-10m



SmarTech Yagi 5 el. 278Y5L 27-28 MHz / 11-10m


The 5-element 278Y5L is also very suitable for stack installations. For more information and for customized solutions, please contact the SmarTech Technical Division.

Don't settle for less, choose the 278Y5L antenna for top-notch performance on both 11 and 10m bands.


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 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.


Boom-to-mast plate for Yagi - 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 15.67dBi @27.500 MHz @22m (72.2ft) 15.89dBi @28.000 MHz @22m (72.2ft) 15.90dBi @28.500 MHz @22m (72.2ft)
Front/Back Ratio 28.01dB @27.500 MHz @22m (72.2ft) 24.22dB @28.000 MHz @22m (72.2ft) 21.22dB @28.500 MHz @22m (72.2ft)
Impedance 50 ohm
Power rating 5 kW
Matching Method Direct feed
3 dB Horizontal Beamwidth 52° @22m (72.2ft)
PHYSYCAL AND MECHANICAL SPECIFICATIONS
Weight 17.7kg (39lb)
Boom length 8m (26.2ft)
Longest element 5.50m (18ft)
Rotation radius 4.7m (15.21ft)
Projected area [F=Flat - C=Cylindrical] F = 0.49m² (4.94 ft²) - C= 0.4m² (4.3ft²)

5 el. YAGI 27-28 MHz (278Y5L)

  • € 548.20