The WRCD10-1955-1957.5-1962.5-1965-40-4 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 1.9575 to 1.9625 GHz, Bandwidth 5 MHz, Insertion Loss 1.25 to 2 dB, Rejection 40 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCD10-1955-1957.5-1962.5-1965-40-4 can be seen below.