Sirio GPA 66-108 is 1/4 λ VHF base antenna for professional and HAM 4m bands 66MHz - 108MHz. Manufactured from robust aluminum alloy and weather proof plastics. High quality materials guarantee maximum effectivеness and long term exploitation.

Sirio GPA 66-108 - VHF antenna type ground plane for base station applications in frequency range 66MHz - 108MHz tunable base antenna

 

Omnidirectional, Unity gain

  • Made of aluminium alloy 6063 T-832
  • Perfect protection against the worst weather conditions
  • Tunable by whip length adjusting

  • Electrical Data

     

  •   Type: 1/4λ ground plane large band
  • Frequency range:  GPA 66-108: tunable 66...108 MHz 
  • Impedance: 50Ω
  • Radiation (H-plane): 360° omnidirectional
  • Radiation (E-plane): beamwidth @ -3 dB = 86°
  • Radiation angle: 0°
  • Polarization: linear vertical
  • Gain: 0 dBd - 2.15 dBi
  • Bandwidth @ SWR ≤2: 6.5 MHz at 66 MHz
  • SWR @ res. freq.: ≤ 1.2 @ start freq.
  • Max. Power (CW) @ 30°C: GPA 66-108: 500 Watts 
  • Connector: UHF-female 

    Mechanical Data

     

  • Materials: Aluminium, Chromed brass, Nylon
  • Wind load / resistance:  54 N at 150 Km/h / 150 Km/h
  • Wind surface:   0.05 m² 
  • Height (approx.):  1930 mm 
  • Weight (approx.):  700 gr 
  • Mounting mast: Ø 35-40 mm

               
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