Zowaysoon 1/4 Wave Professional GP Antenna for 5W-100W Fm Transmitter 88-108MHZ BNC Center frequency : 88-108M---This is the only one 1/4 wave GP antenna in the world, which can easily adjust the accuracy frequency for fix your FM transmitter.It is also the design of anti-rain and lightness. It is very sure that this antenna is your best choice for your FM transmitter. .Made entirely of auminum alloy.No need any worries about water. Adopting the design of anti-rain, even under the heavy rain, the water will not flow into interfaces, resulting in damage. Power: 1W-100W (5w,7w,15w,25w,30w,50w,100w) Frequency: 84.5-89.5MHz(A+B1) 89.5-94.5Mhz (A+B2) 94.5-99.5Mhz(A+B3) 99.5-104.5Mhz(A+B4) 104.5-109.5(A+B5)--{Center Frequency: 87MHz / 92MHz / 97MHz / 102MHz/ 107MHz}