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Sirio SA 270 SN VHF/UHF Fiberglass Hi-Gain Dual Band Antenna

Sirio SA 270 SN VHF/UHF Fiberglass Hi-Gain Dual Band Antenna
Ground Plane colinear dual-band antenna for base station service working on the radio-amateur frequency of 2m/70cm. The radial whip is of brass inserted in a conic fiberglass tube for a perfect protection from the worst climates and the radials are of stainless steel to get the maximun strength. They are supplied with a solid aluminium bracket for an easy installation on the support mast.

Works for for VHF 143-149 MHz, UHF 440-450 MHz


  • Base station antenna, Omnidirectional
  • Dual-band
  • VHF Low-gain, UHF Medium-gain
  • Protection from static discharges DC-Ground
  • Stainless steel hardware and radials
  • Equipped with anodized aluminium bracket for an easy side mast installation
  • High quality whip made of brass and copper protected by fiberglass tube

    Electrical Data

  • Type: VHF: 1/2λ colinear UHF: 2 x 5/8λ colinear
  • Frequency range @ SWR ≤2: VHF 143-149 MHz, UHF 440-450 MHz
  • Impedance: 50Ω
  • Radiation (H-plane): 360° omnidirectional
  • Radiation (E-plane): VHF: beamwidth @ -3 dB = 68° UHF: beamwidth @ -3 dB = 36°
  • Radiation angle: 0°
  • Polarization: linear vertical
  • Gain: VHF: 1 dBd - 3.15 dBi UHF: 3.3 dBd - 5.45 dBi
  • Max. power (CW) @ 30°C: 200 Watts
  • Grounding protection: all metal parts are DC-grounded, the inner conductor is coupled capacitively
  • Connector: N-female, gold plated central pin

    Mechanical Data

  • Materials: Fiberglass, Aluminium, Brass, Stainless Steel
  • Wind load / resistance: 37 N @ 150 Km/h / 200 Km/h
  • Wind surface: 0.03 m²
  • Height (approx.): 1325 mm
  • Weight (approx.): 810 gr
  • Radial length (approx.): 170 mm
  • Mounting mast: Ø 35-54 mm
  • Quantity: Reviews
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