Parameters Rated Power Supply DC12V Maximum working current 500mA Ambient temperature -5 40 °C Frequency Range: 76MHz 108MHz Frequency band into 100KHz Stabilized mode PLL Pre-emphasis 50μs optional default 75μs Output power 0 to 1000mW ± 10% Output Impedance 50 Europe Modulation WFM Maximum Deviation ± 75KHz Parasitic AM "0.2% Audio Frequency Response: 50Hz 15000Hz Audio Input Level:-15dbV (Max:-30dbV) Audio Input Interface 3.5mm headphone connector and RCA jack MIC input level -15dbV (Max:-45dbV) MIC input 3.5mm headphone connector Stereo separation better than 30dbSNR: better than 50db Antenna Connector SMA type color white/black(which dou you like ?please tell me ) Build your own FM stereo radio station! In clear range, this transmitter can broadcast about 0.8 miles*! This auction includes 1 watt FM Transmitter, antenna, power supply,audio in cable and conversion socket. This transmitter has a microphone input and the audio input is adjustable! This FM Stereo Transmitter comes in an aluminum alloy cover. (Color: Silver) *With a good antenna the FM transmitter will broadcast better. The transmission range depends on many factors. The true distance is based on the sensitivity of the receiver, antenna of the receiver, building and other obstructions which are between the transmitter and receiver. The distance will much more in open countryside. Specifications: Frequency range:78MHz 108 MHz (more wide frequency range) Tuning Step: 100kHz Transmit Power: 1 watts Stability of Frequency: ±10ppm?-10? +50?? Ripple or harmonic waves: <= -60dB Modulate Frequency error:<=75KHz?100%? Freq. Response: 50 15000Hz Antenna Connector: SMA type Audio Input Connector: 3.5mm headphone connector Power Supply: 12V DC (The current load of the power supply should over 2A)Package Include 1 X 1w FM transmitter 1 X English Manual 1 X short Antenna 1 X Audio in cable * 1 X 12V DC power adapter * 1 X Conversion Socket ATTENTION:Connect antenna first before connecting transmitter to DC supply, otherwise, transmitter will be burned out.we also have other similar products 0.1FM-Transmitte 1WFM-Transmitter 5WFM-Transmitter 7W FM-Transmitter 15W FM-Transmitter 30W FM-Transmitter GP small antenna GP antenna 3.5MM Audio Cable Power source