The CLPFL-0800 from Crystek Corporation is a Low Pass RF Filter with Frequency DC to 800 MHz, Insertion Loss 0.04 to 0.55 dB, Rejection 0.97 to 52.14 dB, Power 4 W, Return Loss 19.56 to 47.33 dB. Tags: Connectorized, Butterworth Filter. More details for CLPFL-0800 can be seen below.