The Sirio SY68‑3 is a premium 4‑metre beam antenna designed for high‑gain directional performance. With the growing activity on the 4m band, this antenna provides a competitive edge, enabling impressive long‑range contacts. Built from aluminium alloy 6063-T832 and reinforced with high-quality components, the SY68‑3 ensures durability, reliability, and sustained performance in all weather conditions.

Ideal for amateur radio operators, the SY68‑3 combines compact design with powerful functionality, offering easy installation and adjustment to maximise efficiency.

Technical Specifications

• Type: 3‑element Yagi beam antenna

• Frequency Range: 68 – 78 MHz

• Impedance: 50 Ω

• Gain: 4.85 dBd / 7 dBi

• Beamwidth: 130° (H‑plane), 70° (E‑plane)

• Front‑to‑Back Ratio: 15 dB

• Maximum Power Handling: 350 W

• Polarization: Linear (vertical or horizontal)

• Connector: UHF‑female with rubber protection cap

• Grounding: Integrated protection

Mechanical Specifications

• Materials: Aluminium alloy, die‑cast Zamak, EPDM rubber, zinc‑plated steel, chromed brass

• Wind Load: 203 N at 150 km/h

• Wind Resistance: Up to 120 km/h

• Dimensions: 1600 × 2235 mm

• Boom/Element Diameter: 33 mm / 16 mm

• Turning Radius: ~1875 mm

• Weight: ~3360 g

• Operating Temperature: –40 °C to +80 °C

• Mast Mounting: 35–52 mm diameter.