The Smartech 27Y4 belongs to the family of low native impedance Yagis. Its 4-meter boom, along with its typical excellent performance, place the antenna at the top of same-elements/same-boomlength category.

The antenna has a light but strong structure, particularly resistant to very severe mechanical loads. Thanks to the choice of the best materials and the specific sizing of each part, the structure has a strong elasticity and resistance even to the most energic wind loads.
Nevertheless, the antenna is suitable for installations on stands and even rotors of small size.

27Y4 4 el. Yagi SmarTech

The hairpin (beta match) matching system makes the 27Y4
DC Grounded, protected against electrostatic shocks to RTX devices.

Antenna low noise.

Hairpin SmarTech Antennas

The 27Y4 can be installed in both horizontal and vertical polarization. It 'also suitable for stack installations in different configurations (contact the Smartech Technical Division for technical details and solutions).

Noteworthy the -3dB beamwidth on the horizontal plane (see characteristic radiation pattern included).


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.

What Our Customers Say

Hallo! I want to share with you my 4 element Yagi 27Y4 Smartech I have on my pole since 2016. The antenna is perfect like the 1st day even after a lot of strong winds and snow we have in my QTH. Even low propagation I work with no problems stations from S. America and N. America with higher signals than my friends around. Congratulations!

Filippo 1AT783 - Italy

27Y4 4 el. Yagi SmarTech


Gain 14dBi @16m (52.5ft)
Front/Back Ratio 31.5dB @9m (29.5ft)
Impedance 50 ohm
Power rating 5.0 kW
Matching Method Hairpin
3 dB Horizontal Beamwidth 66°@8m (26.2ft)
Stacked Distances 5÷8m (16.4÷26.2ft)
2 Stacked Gain [8m/26.2ft Stacking Distance] 16.5dBi @11m (36 ft)
[5m/16.4ft Stacking Distance] 15.9dBi @9m (29.5 ft)
2 Stacked F/B [8m/26.2ft Stacking Distance] 18.7dB @11m (36 ft))
[5m/16.4ft Stacking Distance] 21.2dB @9m (29.5 ft)
Weight 12.6kg (26.40lb)
Boom length 4m (13.1ft)
Longest element 5.5m (18.1ft)
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 MHz (27Y4)

  • € 300.00