The 5PL4-X2G-SC11 from Reactel is a Low Pass RF Filter with Frequency 20 - 2000 MHz, Insertion Loss < 0.3 dB @ Passband, Rejection > 40 dB @ 2800 MHz, > 50 dB @ 4200 - 5000 MHz, Power 2000 W CW, VSWR < 1.25:1 @ Passband. Tags: Module with Connector. More details for 5PL4-X2G-SC11 can be seen below.