18W FM Radio Station Transmitter This stereo FM transmitter can easily build a wonderful FM radio station. This one have a beautiful aluminum alloy cover(Color: Black). Build your own FM stereo radio station! Specification: Frequency range: 88MHz ~ 108 MHz Tuning Step: 100kHz Transmit Power:18 watts Stability of Frequency: ±10ppm ( -10 ℃ to +50 ℃ ) Ripple or harmonic waves: <= -60dB Modulate Frequency error:<=Less than ±75KHz Freq. Response: 100~15000Hz AntennaConnector: BNC type Audio Input Connector: 3.5mm headphone connector Power Supply: 12V DC (The current load of power supply should over 4A) If you can match a good antenna to the FM transmitter, the effect will be better.The transmission range depends on many factors. The true distance is based on the sensitivity of the receiver, antenna of the receiver, and the building and other obstructions, which are between the transmitter and receiver. And the distance will much more in countryside. This new producthas Microphone input and audioinput is adjustable! ATTENTION: Never power on the transmitterwhen an antenna is not connected!!! In This item, We offer a wonderful Portable antenna (Weight only 0.5 KG and the length of the antenna is adjustable,Cable is not included) With this antenna,the 18W transmitter can cover15 Kilometers without Obstacles! Special offer: This item includes the GP antenna and power supply. Package Content : FM Transmitter Power supply Antenna(antenna cable is included) In clear range, this transmitter can broadcast about 6 miles*! This auction includes18 watt FM Transmitter, antenna(include the antenna coax cable) and power supply.