The 5LX6-X30N11 from Reactel is a Low Pass RF Filter with Frequency DC to 30.01 MHz, Insertion Loss 0.75 to 1.5 dB, Power 1250 W CW, VSWR 1.5:1, Operating_Temperature 0 to 50 Degrees C. Tags: Module with Connector. More details for 5LX6-X30N11 can be seen below.