Sirio SA270SN Dual Band 2m / 70cm Base antenna

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Features:

- 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: 1/2 lambda colinear
 UHF: 2 x 5/8 lambda colinear
- Frequency range @ SWR  VHF: 142-148 MHz
 UHF: 426-443 MHz
- Impedance: 50 ohm
- 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 sq.m.
- Height (approx.): 1325 mm
- Weight (approx.): 810 gr
- Radial length (approx.): 170 mm
- Mounting mast: 35-54 mm