Retekess TR508 Portable Transmitter Support AUX/MIC Input with LCD Display Features: AUX Input MIC Input LCD Display Adjustable Power (100mW and 500mW) High Quality Stereo High fidelity and stability Transmitted Audio and Mic volume adjusting knob independently 无标题文档 Shipping Service:Priority DHL Express Service when items ship from China.(2-7 business days) Frequency range can be set arbitrarily, such as 87M to 90M，95M to 108M,108M~120M. The transmission range reaches up to 300m. And detachable antenna can be replaced with TNC antenna possessing greater transmission capacity. Audio player and microphone can be input simultaneously and the volume control knobs work independently. You can adjust the volume according to your needs. Transmitter will save the transmitting frequency of the last power-off. The current frequency is clearly shown on the display and blue backlight, can also be used in dark night Built-in advanced modulation system, transmitter provide you low noisy, high fidelity, high stability sound. Excellent heat dissipation can work continuously to ensure the normal operation of the FM transmitter. Motherboard is adopted by next-generation integrated NC FM stereo radio transmitter chip the BH1415. Built-in PLL advanced modulation system , audio pre-emphasis, limiter and low pass filter circuit to achieve high fidelity, high stability signal transmission. Retekess TR508 Portable Transmitter Support AUX/MIC Input with LCD Display Features: AUX Input MIC Input LCD Display Adjustable Power (100mW and 500mW) High Quality Stereo High fidelity and stability Transmitted Audio and Mic volume adjusting knob independently Specification: Working voltage: 11~13V DC(Rated voltage 12V) Working current: <300mA Frequency domain: 76~108Mhz Frequency stability: ±10PPM Stepped frequency: 100KHz The operating temperature of the environment: -10℃~50℃ Output impedance: 50Ω RF power output range: H:500mW (L:100mW) Harmonic and noise radiation: ≤－60dB Audio distortion: <0.30% Frequency response: 20HZ~15000HZ Preemphasis delay: 50us Degree of separation: ≥40 dB Input level: ≤-10 dBV Modulation frequency deviation: ±75KHZ SNR(Signal to Noise Ratio): ≥65 dB Item Dimensions: 113 (L) x 88 (W) x 39 (H) mm Weight: body 269(include antenna) Standard Accessories: 1* TR508 Transmitter 1* TNC Antenna 1* 3.5mm Audio Cable 1* Power Adapter 1* User Manual About Us