The RAMI AV-10 is designed for high-performance aircraft applications. It exhibits excellent electrical characteristics and incorporates an efficient aerodynamic 4-bolt mounting base. The antenna essentially matches the styling of the communication antennas currently used on most singles and light twins. The antenna is designed to operate at speeds up to 350 mph and altitudes up to 50,000 ft. It has a drag force of 2.70 lb @ 250 mph. This antenna is a direct replacement for the COMANT CI 121. Product Specifications: Model    AV-10 Application    Airborne Communications Frequency    118 – 137 MHz Impedance    50 Ohms Nominal VSWR    2.0:1 Maximum Polarization    Vertical Pattern    Omni-Directional Connector    “BNC” Female Max Height    20.25″ RF Power Capacity    30 Watts FAA TSO    C37d, C38d