Sirio GPA 108-136 – 1/4 Wave Ground Plane Antenna (PMR/VHF)


Introducing the Sirio GPA 108-136 1/4 Wave Ground Plane Antenna, the perfect solution for reliable and efficient communication in the PMR/VHF frequency range. Designed for base station service, this antenna delivers exceptional performance across the 108-136 MHz spectrum, ensuring clear and reliable communication for a variety of applications.


Featuring a 1/4 wave ground plane configuration, the Sirio GPA 108-136 offers efficient signal transmission and reception, maximizing coverage and minimizing interference. With its tuning diagram enclosed, tuning this antenna to the desired frequency range is quick and easy, allowing for seamless integration into your communication setup.

Constructed entirely of non-corrosive aluminum and assembled on a strong die-cast base, the Sirio GPA 108-136 ensures durability and reliability in any weather conditions. Its robust construction and easy installation process make it an ideal choice for both permanent and temporary installations, providing peace of mind and excellent performance.

Whether you’re setting up a base station for public safety communications, aviation monitoring, or other applications, the Sirio GPA 108-136 antenna offers the performance and reliability you need to stay connected. Upgrade your communication setup today and experience the difference with the Sirio GPA 108-136 1/4 Wave Ground Plane Antenna.

Sirio GPA 108-136 - 1/4 Wave Ground Plane Antenna (PMR/VHF)Sirio GPA 108-136 - 1/4 Wave Ground Plane Antenna (PMR/VHF)

Electrical Data

  • Type: 1/4 wave Ground Plane
  • Frequency Range: 108 – 136 MHz tunable by diagram
  • Impedance: 50 Ohms Unbalanced
  • Radiation (H-plane): 360° Omnidirectional
  • Radiation (E-plane): Beamwidth at -3 dB = 86°
  • Radiation Angle Deg: 0°
  • Polarization: Vertical
  • Gain: 0 dBd – 2.15 dBi
  • Max Power: 500 W
  • Feed System / Position: Direct / Center
  • Connection: UHF Female

Mechanical Data:

  • Materials: Aluminium, Chromed Brass, Nylon, Stainless Steel
  • Wind Load / Resistance: 35 N at 150 km/h / 150 km/h
  • Wind Surface: 0.03 m²
  • Height: 1185 mm
  • Weight: 565 g
  • Radial Length: 650 mm
  • Mounting Mast: Diameter 35 – 40 mm

Additional information

Weight10 kg