Features: The antenna is made of stainless steel, which is for , and has a long service life. This is a high-frequency (HF) antenna for radio communications in the 14MHz-30MHz band, with extremely high efficiency in the 14,270MHz band. Providing strong signal transmission. The antenna length can be extended to 5 meters/16.4 feet, providing excellent reception and transmission performance. This antenna is suitable for USDX radio stations and is suitable for amateur and professional radio users. Specifications: Part Name: High Frequency Antenna Set Material: Stainless Steel Color: Red Size: As shown in the picture Frequency Range: 14-30 mHz (Highest Efficiency at 14,270 mHz) Supported : 300W (Tested up to 600W) Antenna Length: Stretchable to 5 meters/16.4 feet Package Size: 150*80*50 mm/5.91*3.94*1.97 inches Package Weight: 600 grams/1.32 pounds Package Contents: A:1*Base Only (No Antenna) B:1*Base+1*Telescopic Antenna+1*Antenna+1*Test