The WTRCD10-1900-1920-3-7-40 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 1.9 to 1.92 GHz, Bandwidth 3 MHz, Insertion Loss 1.25 dB, Rejection 40 dB, Return Loss 14 dB. Tags: Module with Connectors, Cavity Filter, Notch Filter, Tunable Filter. More details for WTRCD10-1900-1920-3-7-40 can be seen below.