KRV-100 PECIFICATION 1. COMPREHENSIVE PERFORMANCE CARRIER FREQUENCY: VHF 170-260MHz FREQUENCY STABILIZATION: LESS THAN 0.002% DYNAMIC RANGE: MORE THAN 90dB TOTAL HARMONIC DISTORTION: LESS THAN 0.5% FREQUENCY RESPONSE: 50Hz-15KHz±3dB AUDIO OUTPUT LEVEL: 0-300mV 2. FIXED RECEIVER POWER SUPPLY: 120V or 230V AC ADAPT POWER REQUIREMENTS: 12-18V DC NOMINAL SIGNAL/NOISE RATIO: MORE THAN 90dB IMAGE AND SPURIOUS REJECTION: MORE THAN 80dB BORDER UPON CHANNEL REJECTION: MORE THAN 85dB RECEIVING SENSITIVITY: -105dBm DIMENSIONS: 17.8*11.8*4cm 3. HANDING MICROPHONE POWER REQUIREMENTS: 9V ALKALINE BATTERY NOMINAL CURRENT DRAIN: LESS THAN 25mA RF OUTPUT: MORE THAN 13dBm MODULATION TYPE: FM MAX DEVIATION: ±35KHz SPURIOUS EMISSION: MORE THAN 55dB(WITH CARRIER) BATTERY VOLTAGE: 9V battery CONTINUAL USING: 6 Hours(Compare with GP 1604s 9v battery) DIMENSIONS: 23.5*5*5cm