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.


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MATERIALS

The main structure is made of aluminum alloy EN AW-6060/82 UNI 9006/1 (Anticorodal 60/100), which provides excellent long-term durability against the most severe weather (ice, water, UV rays, fine particles, acid rain), and better resistance to heavy wind load.

The antenna is supplied with stainless steel parts AISI 304 (Inox Austenitic UNI / EN 10088) and steel S235JR2 (UNI 100 series), certified according to 2000/53 / CE + RoHs standards.

Element Insulators are made of Polypropylene PPC 5660, resistant to remarkable thermic excursions (certified for temperatures from -20°C to +130°C), with high load at break (ultimate tensile strength 25Mpa), excellent abrasion-resistant and volume resistivity > 1018


The antenna is made to obtain the maximum electrical efficiency, the best mechanical resistance and durability, thanks to its high quality materials. It is also suitable for installation in mountain areas and coastal (corrosive) areas.

SmarTech antennas are designed with the minimum necessary electrical/mechanical joints. So, parasitic resistances are the lowest possible so as to minimize unwanted RF dissipations.

In order to maintain its best performances, each antenna is individually checked before shipment.


Costs include proper packaging, completion of customs documentation and shipping tracking 24/7. All products are shipped with the most important and reliable international couriers.


ELECTRICAL SPECIFICATIONS
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)
PHYSYCAL AND MECHANICAL SPECIFICATIONS
Longest element 5.5m (18ft)
Weight 4.9kg (10.81lb)
Boom length 3m (9.8ft)
Projected area [F=Flat - C=Cylindrical] F = 0,09m² (9.7ft²) - C= 0.246 m² (2.59ft²)
Rotation radius 3.1m (10.21ft)

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

  • € 149.00