1The FM transmitter is a miniature radio station, which converts the audio signal into a high-fidelity FM stereo signal and transmits it. 2The working frequency of the broadcast generator can be set at will, the frequency range is 76108Mhz, the power 1W or 7W can be selfset. 3Audio+Mic twoway audio source input, volume can be adjusted, PLL phaselocked loop frequency synthesis. 4The working frequency is automatically saved, and it will be automatically set to the working frequency before the last shutdown when the machine is turned on. 5The kit also includes an antenna, adapter and adapter, easy to use, often used in navigator equipment. Item Type: Broadcast TransmitterMaterial: Aluminum alloyModel: ST-7CFrequency Range: 76-108MhzFrequency Step Value: 100kHzFrequency Stabilization Method: PLL phase-locked loop frequency synthesisFrequency Stability: 10ppm (-10-60)Modulation Frequency Deviation: 75kHz (100%)Working Method: Continuous workRF Output Impedance/Power: 50/1W or 7W (self-settable)Reference Range: Approx. 1-5km / 3280.8-16404.2ft (open ground)Antenna Output Interface: BNCPlug Specifications: US Plug 100-240V 1 x Transmitter1 x Adapter1 x AdapterCable1 x Antenna1 x User Manual 1. Please do not use over frequency.2. The screen display is blue or white, tiptoe is square or round, and randomly