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MODEL : REPEATER RF-980 ( GSM ) 900MHZ.COVERAGE AREA UP TO 1000M2. Cell phone signal amplifier is a products designed to solve the mobile phone blind signal. As the mobile phone signal is transmitted by electromagnetic waves to establish a communications link, the building of the barrier, in some tall buildings inside, the basement of some places such as malls, restaurants, places of entertainment such as karaoke OK sauna and massage, underground civil air defense projects, subway stations and many other places where cell phone signals can not reach and can not use the phone. Cell phone signal amplifier can solve these problems in a particular place as long as the installation of a mobile phone signal amplifier system, the entire range of mobile phone signals can be well used, staff or customers will get great convenience . Working system GSM Frequency range Up link: 890~ 915MHz Downlink: 935~ 960MHz Gain Modle RF-980 Up link 70dB Down link 66dB Export power Up link 30dBm Down link 26dBm Pass band ripple d1.8DB I/ O impedence 50 / N connector Noise figur d6dB Transmission delay d0.5 s Ambient temperature -15 ~ 55 Power supply AC/ 220V 10% 45~ 55Hz DC: 12V Size 198mm 148mm 39mm Reliability To the GB6993-86 standard Electromagnetic compatibility To the ETS300 694-4 standard Function a) Power supply LED denote b) Export power ELD denote Coverage area 1000m2