Microlab BK-962 Quadraplexer allows combination and separation of the signals in 698-798 MHz, 817-894 MHz, 1850-2000 MHz, and 1695-1780/2110-2180 MHz commercial wireless bands. To minimize band inter-reaction, the inputs are well isolated and have minimal insertion loss over their respective frequency bands. Attention to mechanical design ensures guaranteed low passive intermodulation. The filter has been designed using passive, proprietary techniques which minimizes cost and size. It allows efficient combining or division of the standard cellular bands for use in a base station, coaxial distributed in-building cellular network or DAS.