... .coverage: 2000m2 2.amplify GSM/DCS/3G signal 3.good after asle service EST-3 GSM/DCS/3G signal booster (big)Frequency ... /2110-2180MHzGain ( dB)Uplink Gp≥65 Downlink Gp≥70Export power (Po)Gp≥+20dBm Downlink Gp≥+24dBmPass band ripple≤3dBI/O impedance50 ... , dance halls, cafes, fitness clubs, leisure and entertainment area, etc.3. Elevators 4. home, office, luxury yachts, private car, public security ...