The WRCT10-2583.5-2587.5-2602.5-2606.5-40-4 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 2.5875 to 2.6025 GHz, Bandwidth 15 MHz, Insertion Loss 1.25 to 2 dB, Rejection 40 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCT10-2583.5-2587.5-2602.5-2606.5-40-4 can be seen below.