The CLPFL-0600 from Crystek Corporation is a Low Pass RF Filter with Frequency DC to 600 MHz, Insertion Loss 0.05 to 1.39 dB, Rejection 6.27 to 53.38 dB, Power 4 W, Return Loss 9.47 to 43.91 dB. Tags: Connectorized, Butterworth Filter. More details for CLPFL-0600 can be seen below.