The WRCT40-2584-2585-2605-2606-50-6 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 2.585 to 2.605 GHz, Bandwidth 20 MHz, Insertion Loss 3 to 6 dB, Rejection 50 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCT40-2584-2585-2605-2606-50-6 can be seen below.