The KFL177306 from Konnect RF is a Low Pass RF Filter with Frequency DC to 1900 MHz, Stopband Frequency 2100 to 5500 MHz, Insertion Loss 1.5 dB, Upper Rejection 40 dB @ 2100 to 5500 MHz, Power 15 W. Tags: Module with Connector. More details for KFL177306 can be seen below.