K40 K40Bcmax 20,000 Watts 26 Mhz To 30 Mhz Helical Coil Cb/10-Meter AntennaNeed a powerful antennaK40's K40BCMAX is 20,000 watts. It's open helical coil gives wide bandwidth of 26 to 30Mhz, and also features a tunable .200 x 48 tapered stainless steal whip. The exterior is made of andodized aluminum, which is ligh weight and corrosion resistant.Fea..