... the school campus ?YIHUA 1088A FM transmitter,wireless transmitter,FM modulator,wireless FM transmitterTechnical parameter:1. product dimension: ... 8. Frequency deviation:+/-75KHz9. Pre-emphasis:50us10. S/N(Stereo):>40db11. Stereo separation:-45dB(5000Hz~15000Hz)12. ... teaching, campus family ( Villa ) background music radio, wireless office meetings and other small places, is individual enthusiasts ...