The WRCT8-872.6-873.1-873.3-873.8-50 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 873.1 to 873.3 MHz, Bandwidth 0.2 MHz, Insertion Loss 0.6 to 3.5 dB, Rejection 50 dB, VSWR 1.43:1. Tags: Module with Connectors, Cavity Filter. More details for WRCT8-872.6-873.1-873.3-873.8-50 can be seen below.