DSP PLL 87-108MHz Digital Wireless Microphone Stereo FM Transmitter Module Board

Features The use of advanced digital audio signal processing DSP technology and FM modulation phase locked loop PLL to make sound more realistic more stable performance long working hours without frequency offsetLCD display is more intuitive and accurate with a very low power consumption and minimal noise interferenceBuilt in 16 digital volume adjustment button operation can be easily completedAll the data is automatically saveMulti channel audio input automatically switchesWith back light button operation if no key operation will automatically turns off the backlight 20 secondsApplications FM wireless audio USB PC audio broadcasting wireless microphonesSpecifications Output power 100mWAudio frequency response 50Hz 18KHzTransmission frequency 87 0MHz 108 0MHzModulation modes Standard FM radioChannel LINE USB channel stereo MIC channel mono Equivalent noise 30dB sound close to CD quality Supply voltage DC 3 0V 5 0VWorking current 35mATransmitting antenna 75cm telescopic antennaTransmission distance 75cm standard whip antenna connection Radio Tecsun PL 660 measured 100 meters of open land Size Approx 26 5x49mm 1 04 x 1 93Instructions for use 1 PowerModule corresponding port respectively then the power supply battery negative and positive with a battery or other power source is recommended power supply You can not use the switching power supply without a filter such as mobile phone chargers and other low quality switching power sup