Choose Tram for your next antenna installation project and stay connected with this High-Power 3,000-Watt CB Antenna with 16 in. Bottom Load Heavy-Duty Copper Coil. Also ideal for Ham radio use, this antenna is a total of 47 in. tall with a 33 in. stainless steel tapered whip. This antenna has a 3/8 in. x 24 thread mounting.