FMUSER GP100 1/4 wave Professional GP Antenna for 5w,7w,15w,30w,50w,100w FM Transmitter+ 8meters cable TNC connector Most common used for low power transmitter with maximum 100w RF power Made of Aluminum,thus it's Anti-rain,Anti-rust. Include 8-meter cable with optional BNC/TNC/NJ connector and 5 frequency bars from 85~110mhz Easy operated,frequency can be adjusted very conveniently.