The WRCD20-1879-1880-1885-1886-40-2 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 1.88 to 1.885 GHz, Bandwidth 5 MHz, Insertion Loss 2 to 4 dB, Rejection 40 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCD20-1879-1880-1885-1886-40-2 can be seen below.