Features:This antenna is made of stainless steel material which is long-lasting and corrosion-resistant, and can provide long service time.This is a high frequency (HF) antenna for radio communication in the 14M-30MHz band, very efficient at 14.270mHz.It has a power of 300W, and the testedpeak can reach 600W, which provides strong signal transmission.The length of the antenna can be extended up to 5M/16.4ft which can provide superior receiving and transmitting performance.This antenna is suitable for USDX stations and is suitable for radio hobbyists and professionals.Attention:Adjust its VSWR by stretching the antenna or retracting the antenna.