The CLPFL-1600 from Crystek Corporation is a Low Pass RF Filter with Frequency DC to 1.6 GHz, Insertion Loss 0.02 to 3.59 dB, Power 4 W, Return Loss 3.37 to 32.83 dB, Operating_Temperature -40 to 85 Degree C. Tags: Module with Connector, Butterworth Filter. More details for CLPFL-1600 can be seen below.