成都專業(yè)話筒，舒爾話筒，力志話筒，鐵三角話筒。成都順朋 【商品性能】 OVERALL SYSTEM SPECIFICATIONS OPERATING FREQUENCIES UHF band Band C: 541.500 MHz to 566.375 MHz Band D: 655.500 MHz to 680.375 MHz ________________________________________ NUMBER OF CHANNELS 200 total per band ________________________________________ FREQUENCY STABILITY ±0.005%, Phase Lock Loop frequency control ________________________________________ MODULATION MODE FM ________________________________________ NORMAL DEVIATION ±10 kHz ________________________________________ OPERATING RANGE 300' typical ________________________________________ OPERATING TEMPERATURE RANGE 41° F (5° C) to 113° F (45° C) ________________________________________ FREQUENCY RESPONSE 70 Hz to 15 kHz RECEIVER SPECIFICATIONS RECEIVING SYSTEM Dual independent receivers, automatic-switching diversity ________________________________________ IMAGE REJECTION 60 dB nominal, 55 dB minimum ________________________________________ SIGNAL-TO-NOISE RATIO 110 dB at 35 kHz deviation (IEC-weighted), maximum modulation 75 kHz ________________________________________ TOTAL HARMONIC DISTORTION <=1% (10 kHz deviation at 1 kHz) ________________________________________ SENSITIVITY 24 dBμV (S/N 60 dB at 5 kHz deviation, IEC-weighted) ________________________________________ INTERMEDIATE FREQUENCY 85.38 MHz, 10.7 MHz ________________________________________ AUDIO OUTPUT Unbalanced: 50 mV (at 1 kHz, ±5 kHz deviation, 10k ohm load) Balanced: 32 mV (at 1 kHz, ±5 kHz deviation, 10k ohm load) ________________________________________ OUTPUT CONNECTORS Unbalanced: 1/4" TS ("mono") phone jack Balanced: XLRM-type ________________________________________ POWER SUPPLY 120V AC 60 Hz, or 12-18V DC, 500 mA, center positive, with external supply