The WRCT8-909.4-909.9-910.1-910.6-50 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 909.9 to 910.1 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 WRCT8-909.4-909.9-910.1-910.6-50 can be seen below.