The WRCD10-1808.135-1809.385-1810.615-1811.865-40 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 1.809385 to 1.810615 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 WRCD10-1808.135-1809.385-1810.615-1811.865-40 can be seen below.