The WRCT8-852.535-853.885-855.115-856.465-40 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 853.885 to 855.115 MHz, Bandwidth 1.23 MHz, Insertion Loss 0.6 to 1.5 dB, Rejection 40 dB, VSWR 1.43:1. Tags: Module with Connectors, Cavity Filter. More details for WRCT8-852.535-853.885-855.115-856.465-40 can be seen below.