The RAMI AV-534 is a heavy-duty stainless steel quarterwave VHF communications antenna. It is manufactured with a durable type stainless steel whip and large stress-relieved ferrule and comes complete with porcelain insulators and mounting hardware. The antenna is designed to operate at speeds of up to 350 mph and altitudes of 50,000 ft. It has a drag force of 0.56 lb @ 250 mph. Product Specifications: Model    AV-534 Application    Airborne Communications Frequency    118 – 137 MHz Impedance    50 Ohms Nominal VSWR    3.0:1 Maximum Polarization    Vertical Pattern    Omni-Directional Connector    N/A Max Height    18.75″ RF Power Capacity    50 Watts FAA TSO    C37d, C38d