KATHREIN CA6-230 225-230 MHz is a six-element broadband yagi antenna that is intended for use in professional fixed-station applications. They feature: balanced driven element for superior performance in icing conditions, sealed one-piece element wiht internal coax balun, heavy wall anodized aluminum pipe and tubing, heavy cast aluminum and stainless steel hardware, and the entire antenna at dc ground potential. 11 dBi, 500 Watts.