The SIRIO GPA 108-136 antenna is an aeronautical radio antenna for the frequency range 108-136 MHz. Developed as a station antenna for aircraft radio ground stations, the GPA 108-136 enables good reception and transmission performance. The good efficiency and robustness is achieved by using aluminum and other high-quality materials. The GPA 108-136 is a groundplane antenna with 0 dBi or 2.15 dBi gain with a maximum short-term transmission power of up to 500 watts! The antenna's radiator can be adjusted by shortening the length of the antenna.

Technical data:

• Frequency range: 108-136 MHz tunable
• Type: 1/4 Lambda Ground Plane
• Impedance: 50 Ohm
• Gain: 0 dBd - 2.15 dBi
• Max. Power: 500 Watt
• Material: Aluminum
• Connection: PL socket
• Material: Aluminum/stainless steel
• Mounting: Pole-top mounting for poles with 35-40 mm diameter
• Wind load: 35 N at 150 Km/h / 150 Km/h
• Length: 119 cm (radial approx. 65 cm)
• Weight: 565g