The WRCT12-1987.5-1995-2020-2027.5-40-1 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 1.995 to 2.02 GHz, Bandwidth 25 MHz, Insertion Loss 1.5 to 2 dB, Rejection 40 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCT12-1987.5-1995-2020-2027.5-40-1 can be seen below.