1, For Signal Repeaters: *Frequency systems we can make: GSM900,GSM1800,GSM1900M, CDMA, WCDMA2100, IDEN, TETRA, GSM900+1800 dualband, GSM900+2100M dualband, 900+1800+2100 triband *Indoor series: Intelligent repeater with all above frequencys. Antenna built-in repeater with GSM and CDMA. Band selective repeater as client's required. *Outdoor series: Fullband repeater, band selective repeater, frequency selective repeater, frequency shifting repeater, fiber optical repeaters. Dualband repeater GSM+DCS, GSM+WCDMA, CDMA+WCDMA,GSM+TETRA etc. 2, For Signal Jammers: *All frequencys, make as client's requirement