Hisonic HS909 Dual VHF Wireless Microphone System
Carrier Frequency: VHF 174- 216MHz Frequency Steadying: Less Than 0.002% Modulation Mode: FM Audio Dynamic Range: Over 90 dB Audio Frequency Response: 50Hz -15KHz +- 3dB Audio Output level: 0- 300mV Volume control on each channel (2 control knobs) S/ N ratio: Over 70 dB T.H.D. Less than 0.5% Sensitivity: 3uV for 30dB S/ N F/ N ratio: over 80 dB P/ N ratio: over 80 dB Output power: 10mW Power: Adapter AC 110V 60Hz Range: 300 Feet Transmitter power: 9V battery. Package includes 2 Handheld Microphones/ Transmitters and a deluxe 2-channel receiver with an AC adapter power supply.