The KFL177305 from Konnect RF is a Low Pass RF Filter with Frequency DC to 1500 MHz, Stopband Frequency 1700 to 4000 MHz, Insertion Loss 1.5 dB, Upper Rejection 40 dB @ 1700 to 4000 MHz, Power 15 W. Tags: Module with Connector. More details for KFL177305 can be seen below.