... dual band repeater that would amplify two systems at the same time, for example GSM+DCS, GSM+WCDMA, CDMA ... ,CDMA800, CDMA1900, CDMA2000, WCDMA2100 and AWS5.The repeater gets quite comprehensive functions:1) Intermediate SAW filter ... serious interference to network effectively when the repeater is in deep self-oscillation or very ... 7dBi gain. Signal Link Brand, GSM repeater, 20dBm power, S20A-DB