... phone boosters and repeaters, 800mhz. 50db,60db,70db,80db series repeater is GSM booster, cell phone boosters and repeaters, ... touch with others freely even in the place without signal or with weak signal. 1. FeaturesAdopt two ports full-duplex designPractical, ... space. As figure 2 and figure 3, distributor, extending amplifier and several antennas compose the indoor coverage system. The specific ...