Operating Frequency 512.000 - 537.500 MHz Channel Spacing 100 kHz Frequency Selection Control panel mounted membrane switches RF Power Output Switchable; 50, 100 or 250 mW Compatibility Modes Digital Hybrid Wireless (400 Series), 200 Series, 100 Series, Mode 3, Mode 6, IFB Pilot Tone 25 to 32 kHz; 5 kHz deviation (in 400 Series Hybrid Mode) Frequency Stability ± 0.002% Deviation ± 75 kHz max. (in 400 Series Mode) Spurious Emission 60 dB below carrier Equivalent Input Noise -125 dBV, A-weighted Input Level Dynamic mic: 0.5 mV to 50 mV before limiting; greater than 1 V with limiting Electret lavaliere mic: 1.7 uA to 170 uA before limiting; greater than 5000 uA (5 mA) with limiting Line level input: 17 mV to 1.7 V before limiting; greater than 5 V with limiting Input Impedance Dynamic mic: 300 Ohms Electret lavaliere: Input is virtual ground with servo adjusted constant current bias Line level: > 2.7 k Ohms Limiter Soft limiter, 30 dB range Bias Voltage(s) Selectable; 2V, 4V and Off Gain Range 44 dB; panel mounted membrane switches Modula