The 6PL4-X3G-SC11 from Reactel is a Low Pass RF Filter with Frequency 20 - 3000 MHz, Insertion Loss < 0.3 dB @ Passband, Rejection > 40 dB @ 3940 MHz, > 50 dB @ 5910 - 6000 MHz, Power 2000 W CW, VSWR < 1.25:1 @ Passband. Tags: Module with Connector. More details for 6PL4-X3G-SC11 can be seen below.