CEFLAR WIRELESS MICROPHONE รุ่น CM-258ไมค์ลอยไร้สาย ไมค์ 2 ตัว พร้อมตัวรับสัญาณ คุณภาพเสียงจัดเต็มFeatures & Specificationประสิทธิภาพโดยรวม- Carrier frequency : UHF600 850MHz- Frequency stabllzation : less than +_ 10 ppm- Dynamic range : more than 90 dB- Total harmonic distortion : less than 0.1%- Frequency response : Max unbal : 0 1.5v (at 30K)- Audio output level : separate bal XLR : 800 mVตัวรับสัญญาณ- Power supply : AC 110-240V 50/60H- consume power : 2-5 WATT- Signal / Noise ratio : more than 90dB- image & squriousrejection : mor than 80dB- Border upon channel rejection : more than 80dB- Reciving sensitivity : less than 5dBuV (Sinad = 30dB)- De-emphasi : 25uSไมโครโฟน- Transmitter power : 10mW- Max deviation :+_ 75Khz- Spurious emission : more than 40 dB (with carrier)- Battery voltage : (2x1.5v) battery- Continuum using : 3 hours (compare with GP 1604S 3V battery- Noise control : Perfectness circuit fom clniting noises