• Frequency range: 350-500Mhz  (Tuning
  module before shipping on the 430-450Mhz)
• Impedance: 50Ω
• VSWR: <1.5
• Gain: 11dBi / 9dBi
• Polarization: vertical
• Horizontal 3dB beam width: 45°
• Vertical 3dB beam width:  40°
• Front to back ratio: >9dB
• Lighting protection: direct ground
• Connector: N-female / SL259.female SO239
• Maximum power input: 150W

Mechanical specifications:

• Number of Elements=5
  Forward Gain (dBd) =11
  S.W.R=1.2:1
  Typical Bandwidth (MHz) =2.1
  Boom Length=395mm+300mm
  Antenna Dimension: Length of Main Pole: 70cm, Length of Max. Elements: 38cm 
  Net Weight: 0.315kg 
• Number of Elements=3
  Forward Gain (dBd) =9
  S.W.R=1.2:1
  Typical Bandwidth (MHz) =2.1
  Boom Length=395mm
  Antenna Dimension: Length of Main Pole: 70cm, Length of Max. Elements: 38cm 
  Net Weight: 0.275kg