CCI’s Remote Tunable Narrow Guard Band Filter-Combiner (LLC) combines Cellular Band signals onto a single feeder without the insertion loss normally associated with passive combiners. This new highly compact model reduces the guard band requirement to only 500KHz, restoring lost spectrum associated with previous units. A precisely matched filter which is wide enough for three (3) CDMA carriers allows the carriers to be positioned anywhere in the band and provides high rejection of unwanted spurious emissions and noise. Transmit paths are fully isolated to prevent intermodulation products. Note that any technology (including GSM/UMTS, GSM/CDMA, CDMA/CDMA, CDMA/UMTS or UMTS/UMTS) can be combined when utilizing this LLC. However, please note that there is a model specifically for use with CDMA carriers, and is better suited for combining CDMA and other technologies. Multiple units can be cascaded for deployment of additional channels. When not tuning, no power is required, effectively becoming a pure passive low-loss filter combiner. Control is via TCP/IP or Ethernet requiring only a web browser. All software is resident internally, no extra software or controller is required. Note that the Bandpass port “only” passes Tx signals, but the Bandstop port is fully duplexed and passes Tx/Rx signals. The unit is housed in a single rack-mounted 19” by 2U assembly and can be used with CCI SCPA’s for further feeder line reduction.