The WRCT40-1999-2000-2020-2021-50 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 2 to 2.02 GHz, Bandwidth 20 MHz, Insertion Loss 3.5 dB, Rejection 50 dB, Return Loss 14 dB. Tags: Module with Connectors, Cavity Filter, Notch Filter. More details for WRCT40-1999-2000-2020-2021-50 can be seen below.