The 6PL6-X500-N11 from Reactel is a Low Pass RF Filter with Frequency 20 - 500 MHz, Insertion Loss < 0.3 dB @ Passband, Rejection > 35 dB @ 670 MHz, > 50 dB @ 1005 - 2000 MHz, Power 2000 W CW, VSWR < 1.25:1 @ Passband. Tags: Module with Connector. More details for 6PL6-X500-N11 can be seen below.