The SmarTech 278Y3 is an OWA (Optimized Wideband Antenna) antenna, fed directly with a 50 ohm cable. Its typical bandwidth makes the antenna suitable for both 11 m (27 MHz) and 10 m (28 MHz) bands, with no decay of radiation properties. The antenna doesn't need tuners.
Thanks to its light weight the 278Y3 can be installed on light supports and rotors, even for TV use. Nevertheless the antenna has considerable strength in comparison to equivalent commercial products. The 278Y3 is also suitable for portable use.

This antenna can be indifferently used both in horizontal and vertical polarization.

Mounting operations don't require specific skills and special equipment.



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 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.

Gain 13.2dBi @7m (23ft)
Front/Back Ratio 36.2dB @7m (23ft)
Impedance 50 ohm
Power rating 5 kW
VSWR min. @50 ohm 1.0:1
3 dB Horizontal Beamwidth 66° @7m (23ft)
Weight 4.9kg (10.81lb)
Boom length 3m (9.8ft)
Longest element 5.5m (18ft)
Rotation radius 3.1m (10.21ft)
Projected area [F=Flat - C=Cylindrical] F = 0,09m² (9.7ft²) - C= 0.246 m² (2.59ft²)

3 el. YAGI 27/28 MHz (278Y3)

  • € 165.30