The WRCD10-1840.635-1841.885-1843.115-1844.365-40 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 1.841885 to 1.843115 GHz, Bandwidth 1.23 MHz, Insertion Loss 1.25 to 3 dB, Rejection 40 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter. More details for WRCD10-1840.635-1841.885-1843.115-1844.365-40 can be seen below.