The WRCD5-1878.8-1879.8-1880.2-1881.2-40 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 1.8798 to 1.8802 GHz, Bandwidth 0.4 MHz, Insertion Loss 0.75 to 3 dB, Rejection 40 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCD5-1878.8-1879.8-1880.2-1881.2-40 can be seen below.