... ,PCS,3G Output 23dBm/Gain 60-65dB 1 year warranty mobile signal booster wcdma21001. (1)use: indoor ,to expand the cellphone ... ,there need booster,because the weak signal problem is gsm mobile antenna booster so common in everywhere now.(3)characteristics:high ... :GSM900MHz,DCS1800MHz,WCDMA(3G),CDMA850MHz,CDMA450MHz,CDMA1900MHz,IDEN,EGSM,BLUETEETH,GPS and so on. 4.When you install you need the ...