The WRCT8-872.2-873-873.4-874.2-50 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 873 to 873.4 MHz, Bandwidth 0.4 MHz, Insertion Loss 0.6 to 2.5 dB, Rejection 50 dB, VSWR 1.43:1. Tags: Module with Connectors, Cavity Filter. More details for WRCT8-872.2-873-873.4-874.2-50 can be seen below.