The units are three port devices, one common port and one port for each air interface. Each air interface port supports both the Tx and Rx bands for that air interface. The diplexers feature high Q filter technology for low loss and high selectivity in a relatively small a package size. In addition, good passive intermodulation products of less than -100 dBm tested with two Watt input signals. Type N connectors as well as 7/16 DIN connectors are available.