A muscled antenna, that offers the pleasure of being first.

The Smartech 27Y5LHP belongs to HP (High Performance) family by Smartech, dedicated to very high performance designs.
Modeled for native low impedance, the antenna is matched to 50 ohm with an hairpin system (a.k.a. beta match). Antenna low noise and DC Grounded, free from electrostatic noise and shocks.

Thanks to the excellent manufacturing process and its high quality materials, the SmarTech 27Y5LHP offers properties of high strength and durability. The antenna is suitable also for hostile environments, such as corrosive coastal zones.

Beta Match SmarTech Antennas

Antenna performances, shown by the characteristic radiation patterns, are obtained through a rigorous numerical optimization (with the innovative PSO algorithm) and verified instrumentally on the physical model. SmarTech antennas are made taking into account the effects of each component (insulators, capacity between bracket/element ... etc.), starting from the calculation stage. Thus, the final physical model has no distortion and functional inefficiencies.

The antenna provides excellent performance even in stack configuration. Below there is the optimized configuration for a 2x27Y5LHP in vertical stack.

Stack example - SmarTech Antennas

For different configurations or installation requirements, please contact the Smartech Technical Division.


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.

Gain 16.6dBi @22m (157.5ft)
Front/Back Ratio 32.6dB @22m (157.5ft)
Impedance 50 ohm
Power rating 5 kW
VSWR min. @50 ohm 1.0:1
Matching Method Hairpin
3 dB Horizontal Beamwidth 48° @22m (157. ft)
Stacked Distances 4.5÷6.5m - 14.7÷21.3ft (best7.5m/ 24.6ft)
2 Stacked Gain [7.5m/24.6ft Stacking Distance] 19dBi @22m (157.5 ft)
2 Stacked F/B [7.5m/24.6ft Stacking Distance] 36.5dB @22m (157.5 ft)
Weight 17.8kg (39.27lb)
Boom length 7.9m (25.8ft)
Longest element 5.4m (17.7ft)
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 MHz long boom HP (27Y5LHP)

  • € 538.00