The WRCT8-904-907-915-918-40 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 907 to 915 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 WRCT8-904-907-915-918-40 can be seen below.