CCI’s Remote Tunable Narrow Guard Band Filter - Combiner (LLC) combines CDMA and GSM signals onto a single feeder
without the insertion loss normally associated with passive combiners, nor the cost or DC power consumption of active combiner solutions.  A precision matched tunable filter positions up to three carriers anywhere in the band.  With a 1 MHz guard band, four more carriers can be combined in for a maximum of seven carriers in either A or B Band.  The 3G Tx port is used for CDMA signals while the 2G Tx port is used for GSM signals.  The filter provides high rejection of unwanted spurious emissions and noise. Transmit paths are fully isolated to minimize intermodulation distortion.  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.  The unit is housed in a single rack mounted 19” by 2U assembly.