The WRCT8-917-920-928-931-40-2 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 920 to 928 MHz, Bandwidth 8 MHz, Insertion Loss 0.6 to 1.75 dB, Rejection 40 dB, VSWR 1.43:1. Tags: Module with Connectors, Cavity Filter. More details for WRCT8-917-920-928-931-40-2 can be seen below.