RioRand (TM) Upgraded RRT251 0-25W adjustable FM stereo transmitter broadcast radio station Powered by RioRand advanced technology The RioRand RRT251 25Wt FM transmitter is a professional FM transmitter newly released by Fmuser . Its featured by one button control for all functions. It has VSWR protection, temperature protection, electronic volume adjusting,equipped with low pass filters. Its applicable in many places, such as stadium, county radio station, community radio station, motel, public square,church, theater and so on.