The CLPFL-1600 from Crystek Corporation is a Low Pass RF Filter with Frequency DC to 1600 MHz, Insertion Loss 0.02 to 2.52 dB, Rejection 3.59 to 38.90 dB, Power 4 W, Return Loss 4.54 to 32.83 dB. Tags: Connectorized, Butterworth Filter. More details for CLPFL-1600 can be seen below.