Kingtone Factory Repeater OEM 850 1900 MHz Dual Band B2 B5 2G 3G 4G Cellular Signal Repeaters Long Distance Cell Phone Signal Booster 3-5KM

China Kingtone B2+B5 signal amplifier 4g dual band 850/1900 gsm pcs 2g 3g solar power repeater 5W,10W,20W cdma pcs cellphone signal booster is designed to solve problems of wak mobile signal, which is much cheaper than adding a new base station (BTS).Main operation of the repeaters are to receive lower-power signal from BTS via RF transmission and then transmit the amplified signal to the areas where network coverage is inadequate.And the mobile signal is also amplified and transmitted to the BTS via the opposite direction.

Apple system: call : *3001#12345#* ,signal strength will show on the top left corner.
Samsung system : call : *#0011#
Or you can download “LTE Discovery ” app to check .

Put your phone there to check its signal strengthness outside:
Android : setting→about phone→status→network ,dbm display shall be at -75dbm to -85dbm around ;

Dual-band Customized Frequencies for your reference, choose 2-bands:
B1 (2100) is Band 1 on 2100 MHz.
B2 (1900) is Band 2 on 1900 MHz.
B3 (1800) is Band 3 on 1800 MHz.
B4 (AWS) is band 4 on AWS 1700/2100MHz.
B5 (850) is band 5 on 850 MHz.
B7 (2600) is Band 7 on 2600 MHz.
B8 (900) is Band 8 on 900 MHz.
B20 (800) is Band20 on 800MHz

Technical Specification: