The WRCT8-849-851.5-856.5-859-40-1 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 851.5 to 856.5 MHz, Bandwidth 5 MHz, Insertion Loss 0.6 to 1.25 dB, Rejection 40 dB, VSWR 1.43:1. Tags: Module with Connectors, Cavity Filter. More details for WRCT8-849-851.5-856.5-859-40-1 can be seen below.