The 420XP22 is a light, medium performance cross polarized antenna. Optimum match and gain are between 400 & 440 MHz for the satellite band. Computer design techniques help keep spurious side lobes low 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.