1、The working frequency range is 76‑108Mhz, which can be set at will, power 1W or 7W can be set by yourself. 2、The broadcast transmitter is equipped with LCD backlight, setting data can be clear at a glance. 3、Audio+Mic two‑way audio source input, volume can be adjusted, PLL phase‑locked loop frequency synthesis. 4、The 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. 5、Convert the audio signal into a high‑fidelity FM stereo signal and send it out, often used in navigator equipment. Item Type: Broadcast Transmitter Material: Aluminum alloy Model: ST-7C Frequency Range: 76-108Mhz Frequency Step Value: 100kHz Frequency Stabilization Method: PLL phase-locked loop frequency synthesis Frequency Stability: ±10ppm (-10-60℃) Modulation Frequency Deviation: ≤±75kHz (100%) Working Method: Continuous work RF Output Impedance/Power: 50Ω/1W or 7W (self-settable) Reference Range: Approx. 1-5km / 3280.8-16404.2ft (open ground) Antenna Output Interface: TNC 1 x Transmitter 1 x Adapter 1 x Adapter Cable 1 x Antenna