The WRCT10-2588-2590.5-2595.5-2598-50-1 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 2.5905 to 2.5955 GHz, Bandwidth 5 MHz, Insertion Loss 1.25 to 3 dB, Rejection 50 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCT10-2588-2590.5-2595.5-2598-50-1 can be seen below.