Block cell phone reception - block robocalls on cell phone

GSM900&3G2100MHz Triple Band Mobile Signal Booster 
GSM900&3G2100MHz Triple Band Mobile Signal Booster 
GSM900 DCS1800 3G 2100MHzTriple Band  Mobile Signal Booster  GSM 3G Triband Signal Booster TE-91821B   Brief Description: GSM 3G Triband Booster Signal Booster TE91821B is intended to strengthen the signal of 900MHz/1800MHz/2100MHz mobile phone in the buildings. Ideal for use in areas where the 900MHz/1800MHz/2100MHz signal is weak to cause Call dropout or Cant connection.The device improves the voice calls and data VOICE GPRS and EDGE (depends of the signal operator).   Features: * Provide quick coverage solution for small signal weak & block zones. reduce drop/off calls. * Compact size, low consumption, easy installation, great cover. * Cover about 200-300 square meters without block or obstruct. * Reduce cellphone transimt power and radiation, extend cellphone battery life. *  High linear design, low interference to BTS. *  Manual Gain Control function. *  Triband in one repeater, effectively reduce the project cost.   Applicable place: It can be applied in Building rooms there have weak signal of mobile.   Specification: Frequency Range: 1. GSM900MHz: (Uplink: 890-915MHz; Downlink: 935-960MHz); 2. DCS1800MHz: (Uplink: 1710-1785MHz; Downlink:1805-1880MHz); 3. WCDMA1900MHz: (Uplink:1920-1980MHz; Downlink: 2110-2170MHz); Max Gain: (Uplink)Gp: 50-60dB; (Downlink)Gp: 55-65dB; Band Width: Wide Band; Ripple in Band: CDMA/GSM≦5dB; DCS≦10dB; WCDMA≦5dB; Max. Input Power Without Damage: 0dBm; Output Power: 23dBm;   Intermodulation Products: 9KHz~1GHz: (Uplink)≦ -36dBm;  (Downlink)≦ -36dBm@Po≦20dBm; 1GHz~12.75GHz: (Uplink)≦ -30dBm; (Downlink)≦ -30dBm@Po≦20dBm; Spurious Emission: 9KHz~1GHz: (Uplink)≦ -36dBm; (Downlink)≦-36 dBm; 1GHz~12.75GHz:(Uplink)≦ -30dBm;(Downlink)≦ -30 dBm; Spurious Emission Mask (WCDMA): Complies with 3GPP TS 25.106; Modulation Accuracy (WCDMA): Complies with 3GPP TS 25.106; Peak Code Domain Error(WCDMA): Complies with 3GPP TS 25.106; ACRR( WCDMA ):≥ 30dB @±5MHz&±10MHz; Noise Figure @ max. gain:≦ 8 dB(Typical); Return loss:≦ - 8 dB; Time Delay:≦0.5 μs; MTBF:>50000 hours; Power Supply:AC:90~265V, 50/ 60Hz;DC:5V/5A; Power Consumption: Impedance:50 ohm Mechanical Specification: RF Connector: N-Female Cooling: Heatsink Convection cooling Dimensions (D x W xH ): 330*268*58(mm) Weight: Installation Type:Wall Installation Environment Conditions: IP40 Humidity: Operating Temperature:-10℃~55℃ Package contents: 1pcs  AC90-264V,DC5/5A power supply adapter 1pcs  AC power cord (EU standard/US standard/UK standard/ SA standard/China standard etc); 1pcs  Installation kit 1pcs  User manual    

block cell phone reception

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