The 149CP22 is a light, high performance circularly polarized antenna. Optimum match and gain are between 144 & 150 MHz for the satellite band. Computer design techniques help keep spurios side lobes down for optimum signal to noise ratios. This antenna features the same CNC machined, O-ring and silicone-gel sealed driven element assemblies common to all M2 Yagi antennas. This insures years of trouble free performance regardless of weather.